Merge pull request #39 from antstalepresh/gov_split_vote

Governance split vote

proto/cosmos/gov/v1beta1/gov.proto

@@ -29,6 +29,16 @@ enum VoteOption {
   VOTE_OPTION_NO_WITH_VETO = 4 [(gogoproto.enumvalue_customname) = "OptionNoWithVeto"];
 }
 
+// WeightedVoteOption defines a unit of vote for vote split.
+message WeightedVoteOption {
+  VoteOption option = 1;
+  string weight = 2 [
+    (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Dec",
+    (gogoproto.nullable)   = false,
+    (gogoproto.moretags)   = "yaml:\"weight\""
+  ];
+}
+
 // TextProposal defines a standard text proposal whose changes need to be
 // manually updated in case of approval.
 message TextProposal {
@@ -121,7 +131,7 @@ message Vote {
 
   uint64                      proposal_id  = 1 [(gogoproto.moretags) = "yaml:\"proposal_id\""];
   string                      voter        = 2;
-  VoteOption option      = 3;
+  repeated WeightedVoteOption options      = 3 [(gogoproto.nullable) = false];
 }
 
 // DepositParams defines the params for deposits on governance proposals.

proto/cosmos/gov/v1beta1/tx.proto

@@ -17,6 +17,9 @@ service Msg {
   // Vote defines a method to add a vote on a specific proposal.
   rpc Vote(MsgVote) returns (MsgVoteResponse);
 
+  // WeightedVote defines a method to add a weighted vote on a specific proposal.
+  rpc WeightedVote(MsgWeightedVote) returns (MsgWeightedVoteResponse);
+
   // Deposit defines a method to add deposit on a specific proposal.
   rpc Deposit(MsgDeposit) returns (MsgDepositResponse);
 }
@@ -55,9 +58,24 @@ message MsgVote {
   VoteOption option      = 3;
 }
 
+// MsgVote defines a message to cast a vote.
+message MsgWeightedVote {
+  option (gogoproto.equal) = false;
+  option (gogoproto.goproto_stringer) = false;
+  option (gogoproto.stringer)         = false;
+  option (gogoproto.goproto_getters)  = false;
+
+  uint64                      proposal_id = 1 [(gogoproto.jsontag) = "proposal_id", (gogoproto.moretags) = "yaml:\"proposal_id\""];
+  string                      voter       = 2;
+  repeated WeightedVoteOption options     = 3 [(gogoproto.nullable) = false];
+}
+
 // MsgVoteResponse defines the Msg/Vote response type.
 message MsgVoteResponse {}
 
+// MsgWeightedVoteResponse defines the MsgWeightedVote response type.
+message MsgWeightedVoteResponse {}
+
 // MsgDeposit defines a message to submit a deposit to an existing proposal.
 message MsgDeposit {
   option (gogoproto.equal) = false;

simapp/params/weights.go

@@ -10,6 +10,7 @@ const (
 	DefaultWeightMsgFundCommunityPool           int = 50
 	DefaultWeightMsgDeposit                     int = 100
 	DefaultWeightMsgVote                        int = 67
+	DefaultWeightMsgWeightedVote                int = 33
 	DefaultWeightMsgUnjail                      int = 100
 	DefaultWeightMsgCreateValidator             int = 100
 	DefaultWeightMsgEditValidator               int = 5

x/gov/abci_test.go

@@ -307,7 +307,7 @@ func TestProposalPassedEndblocker(t *testing.T) {
 	deposits := initialModuleAccCoins.Add(proposal.TotalDeposit...).Add(proposalCoins...)
 	require.True(t, moduleAccCoins.IsEqual(deposits))
 
-	err = app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[0], types.OptionYes)
+	err = app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[0], types.NewNonSplitVoteOption(types.OptionYes))
 	require.NoError(t, err)
 
 	newHeader := ctx.BlockHeader()
@@ -348,7 +348,7 @@ func TestEndBlockerProposalHandlerFailed(t *testing.T) {
 
 	handleAndCheck(t, gov.NewHandler(app.GovKeeper), ctx, newDepositMsg)
 
-	err = app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[0], types.OptionYes)
+	err = app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[0], types.NewNonSplitVoteOption(types.OptionYes))
 	require.NoError(t, err)
 
 	newHeader := ctx.BlockHeader()

x/gov/client/cli/cli_test.go

@@ -60,6 +60,18 @@ func (s *IntegrationTestSuite) SetupSuite() {
 	s.Require().NoError(err)
 	_, err = s.network.WaitForHeight(1)
 	s.Require().NoError(err)
+
+	// create a proposal3 with deposit
+	_, err = govtestutil.MsgSubmitProposal(val.ClientCtx, val.Address.String(),
+		"Text Proposal 3", "Where is the title!?", types.ProposalTypeText,
+		fmt.Sprintf("--%s=%s", cli.FlagDeposit, sdk.NewCoin(s.cfg.BondDenom, types.DefaultMinDepositTokens).String()))
+	s.Require().NoError(err)
+	_, err = s.network.WaitForHeight(1)
+	s.Require().NoError(err)
+
+	// vote for proposal3 as val
+	_, err = govtestutil.MsgVote(val.ClientCtx, val.Address.String(), "3", "yes=0.6,no=0.3,abstain=0.05,no_with_veto=0.05")
+	s.Require().NoError(err)
 }
 
 func (s *IntegrationTestSuite) TearDownSuite() {
@@ -448,7 +460,7 @@ func (s *IntegrationTestSuite) TestCmdGetProposals() {
 				var proposals types.QueryProposalsResponse
 
 				s.Require().NoError(clientCtx.JSONMarshaler.UnmarshalJSON(out.Bytes(), &proposals), out.String())
-				s.Require().Len(proposals.Proposals, 2)
+				s.Require().Len(proposals.Proposals, 3)
 			}
 		})
 	}
@@ -692,6 +704,7 @@ func (s *IntegrationTestSuite) TestCmdQueryVote() {
 		name           string
 		args           []string
 		expectErr      bool
+		expVoteOptions types.WeightedVoteOptions
 	}{
 		{
 			"get vote of non existing proposal",
@@ -700,6 +713,7 @@ func (s *IntegrationTestSuite) TestCmdQueryVote() {
 				val.Address.String(),
 			},
 			true,
+			types.NewNonSplitVoteOption(types.OptionYes),
 		},
 		{
 			"get vote by wrong voter",
@@ -708,6 +722,7 @@ func (s *IntegrationTestSuite) TestCmdQueryVote() {
 				"wrong address",
 			},
 			true,
+			types.NewNonSplitVoteOption(types.OptionYes),
 		},
 		{
 			"vote for valid proposal",
@@ -717,6 +732,22 @@ func (s *IntegrationTestSuite) TestCmdQueryVote() {
 				fmt.Sprintf("--%s=json", tmcli.OutputFlag),
 			},
 			false,
+			types.NewNonSplitVoteOption(types.OptionYes),
+		},
+		{
+			"split vote for valid proposal",
+			[]string{
+				"3",
+				val.Address.String(),
+				fmt.Sprintf("--%s=json", tmcli.OutputFlag),
+			},
+			false,
+			types.WeightedVoteOptions{
+				types.WeightedVoteOption{Option: types.OptionYes, Weight: sdk.NewDecWithPrec(60, 2)},
+				types.WeightedVoteOption{Option: types.OptionNo, Weight: sdk.NewDecWithPrec(30, 2)},
+				types.WeightedVoteOption{Option: types.OptionAbstain, Weight: sdk.NewDecWithPrec(5, 2)},
+				types.WeightedVoteOption{Option: types.OptionNoWithVeto, Weight: sdk.NewDecWithPrec(5, 2)},
+			},
 		},
 	}
 
@@ -735,7 +766,11 @@ func (s *IntegrationTestSuite) TestCmdQueryVote() {
 
 				var vote types.Vote
 				s.Require().NoError(clientCtx.JSONMarshaler.UnmarshalJSON(out.Bytes(), &vote), out.String())
-				s.Require().Equal(types.OptionYes, vote.Option)
+				s.Require().Equal(len(vote.Options), len(tc.expVoteOptions))
+				for i, option := range tc.expVoteOptions {
+					s.Require().Equal(option.Option, vote.Options[i].Option)
+					s.Require().True(option.Weight.Equal(vote.Options[i].Weight))
+				}
 			}
 		})
 	}
@@ -801,6 +836,90 @@ func (s *IntegrationTestSuite) TestNewCmdVote() {
 	}
 }
 
+func (s *IntegrationTestSuite) TestNewCmdWeightedVote() {
+	val := s.network.Validators[0]
+
+	testCases := []struct {
+		name         string
+		args         []string
+		expectErr    bool
+		expectedCode uint32
+	}{
+		{
+			"invalid vote",
+			[]string{},
+			true, 0,
+		},
+		{
+			"vote for invalid proposal",
+			[]string{
+				"10",
+				fmt.Sprintf("%s", "yes"),
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, val.Address.String()),
+				fmt.Sprintf("--%s=true", flags.FlagSkipConfirmation),
+				fmt.Sprintf("--%s=%s", flags.FlagBroadcastMode, flags.BroadcastBlock),
+				fmt.Sprintf("--%s=%s", flags.FlagFees, sdk.NewCoins(sdk.NewCoin(s.cfg.BondDenom, sdk.NewInt(10))).String()),
+			},
+			false, 2,
+		},
+		{
+			"valid vote",
+			[]string{
+				"1",
+				fmt.Sprintf("%s", "yes"),
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, val.Address.String()),
+				fmt.Sprintf("--%s=true", flags.FlagSkipConfirmation),
+				fmt.Sprintf("--%s=%s", flags.FlagBroadcastMode, flags.BroadcastBlock),
+				fmt.Sprintf("--%s=%s", flags.FlagFees, sdk.NewCoins(sdk.NewCoin(s.cfg.BondDenom, sdk.NewInt(10))).String()),
+			},
+			false, 0,
+		},
+		{
+			"invalid valid split vote string",
+			[]string{
+				"1",
+				fmt.Sprintf("%s", "yes/0.6,no/0.3,abstain/0.05,no_with_veto/0.05"),
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, val.Address.String()),
+				fmt.Sprintf("--%s=true", flags.FlagSkipConfirmation),
+				fmt.Sprintf("--%s=%s", flags.FlagBroadcastMode, flags.BroadcastBlock),
+				fmt.Sprintf("--%s=%s", flags.FlagFees, sdk.NewCoins(sdk.NewCoin(s.cfg.BondDenom, sdk.NewInt(10))).String()),
+			},
+			true, 0,
+		},
+		{
+			"valid split vote",
+			[]string{
+				"1",
+				fmt.Sprintf("%s", "yes=0.6,no=0.3,abstain=0.05,no_with_veto=0.05"),
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, val.Address.String()),
+				fmt.Sprintf("--%s=true", flags.FlagSkipConfirmation),
+				fmt.Sprintf("--%s=%s", flags.FlagBroadcastMode, flags.BroadcastBlock),
+				fmt.Sprintf("--%s=%s", flags.FlagFees, sdk.NewCoins(sdk.NewCoin(s.cfg.BondDenom, sdk.NewInt(10))).String()),
+			},
+			false, 0,
+		},
+	}
+
+	for _, tc := range testCases {
+		tc := tc
+		s.Run(tc.name, func() {
+			cmd := cli.NewCmdWeightedVote()
+			clientCtx := val.ClientCtx
+			var txResp sdk.TxResponse
+
+			out, err := clitestutil.ExecTestCLICmd(clientCtx, cmd, tc.args)
+
+			if tc.expectErr {
+				s.Require().Error(err)
+			} else {
+				s.Require().NoError(err)
+				s.Require().NoError(clientCtx.JSONMarshaler.UnmarshalJSON(out.Bytes(), &txResp), out.String())
+				s.Require().Equal(tc.expectedCode, txResp.Code, out.String())
+			}
+		})
+	}
+}
+
 func TestIntegrationTestSuite(t *testing.T) {
 	suite.Run(t, new(IntegrationTestSuite))
 }

x/gov/client/cli/tx.go

@@ -68,6 +68,7 @@ func NewTxCmd(propCmds []*cobra.Command) *cobra.Command {
 	govTxCmd.AddCommand(
 		NewCmdDeposit(),
 		NewCmdVote(),
+		NewCmdWeightedVote(),
 		cmdSubmitProp,
 	)
 
@@ -207,7 +208,6 @@ func NewCmdVote() *cobra.Command {
 			fmt.Sprintf(`Submit a vote for an active proposal. You can
 find the proposal-id by running "%s query gov proposals".
 
-
 Example:
 $ %s tx gov vote 1 yes --from mykey
 `,
@@ -251,3 +251,57 @@ $ %s tx gov vote 1 yes --from mykey
 
 	return cmd
 }
+
+// NewCmdWeightedVote implements creating a new weighted vote command.
+func NewCmdWeightedVote() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "weighted-vote [proposal-id] [weighted-options]",
+		Args:  cobra.ExactArgs(2),
+		Short: "Vote for an active proposal, options: yes/no/no_with_veto/abstain",
+		Long: strings.TrimSpace(
+			fmt.Sprintf(`Submit a vote for an active proposal. You can
+find the proposal-id by running "%s query gov proposals".
+
+Example:
+$ %s tx gov vote 1 yes=0.6,no=0.3,abstain=0.05,no_with_veto=0.05 --from mykey
+`,
+				version.AppName, version.AppName,
+			),
+		),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			clientCtx := client.GetClientContextFromCmd(cmd)
+			clientCtx, err := client.ReadTxCommandFlags(clientCtx, cmd.Flags())
+			if err != nil {
+				return err
+			}
+
+			// Get voting address
+			from := clientCtx.GetFromAddress()
+
+			// validate that the proposal id is a uint
+			proposalID, err := strconv.ParseUint(args[0], 10, 64)
+			if err != nil {
+				return fmt.Errorf("proposal-id %s not a valid int, please input a valid proposal-id", args[0])
+			}
+
+			// Figure out which vote options user chose
+			options, err := types.WeightedVoteOptionsFromString(govutils.NormalizeWeightedVoteOptions(args[1]))
+			if err != nil {
+				return err
+			}
+
+			// Build vote message and run basic validation
+			msg := types.NewMsgWeightedVote(from, proposalID, options)
+			err = msg.ValidateBasic()
+			if err != nil {
+				return err
+			}
+
+			return tx.GenerateOrBroadcastTxCLI(clientCtx, cmd.Flags(), msg)
+		},
+	}
+
+	flags.AddTxFlagsToCmd(cmd)
+
+	return cmd
+}

x/gov/client/rest/grpc_query_test.go

@@ -57,6 +57,18 @@ func (s *IntegrationTestSuite) SetupSuite() {
 	s.Require().NoError(err)
 	_, err = s.network.WaitForHeight(1)
 	s.Require().NoError(err)
+
+	// create a proposal3 with deposit
+	_, err = govtestutil.MsgSubmitProposal(val.ClientCtx, val.Address.String(),
+		"Text Proposal 3", "Where is the title!?", types.ProposalTypeText,
+		fmt.Sprintf("--%s=%s", cli.FlagDeposit, sdk.NewCoin(s.cfg.BondDenom, types.DefaultMinDepositTokens).String()))
+	s.Require().NoError(err)
+	_, err = s.network.WaitForHeight(1)
+	s.Require().NoError(err)
+
+	// vote for proposal3 as val
+	_, err = govtestutil.MsgVote(val.ClientCtx, val.Address.String(), "3", "yes=0.6,no=0.3,abstain=0.05,no_with_veto=0.05")
+	s.Require().NoError(err)
 }
 
 func (s *IntegrationTestSuite) TestGetProposalGRPC() {
@@ -141,7 +153,7 @@ func (s *IntegrationTestSuite) TestGetProposalsGRPC() {
 				s.Require().Empty(proposals.Proposals)
 			} else {
 				s.Require().NoError(err)
-				s.Require().Len(proposals.Proposals, 2)
+				s.Require().Len(proposals.Proposals, 3)
 			}
 		})
 	}
@@ -156,26 +168,42 @@ func (s *IntegrationTestSuite) TestGetProposalVoteGRPC() {
 		name           string
 		url            string
 		expErr         bool
+		expVoteOptions types.WeightedVoteOptions
 	}{
 		{
 			"empty proposal",
 			fmt.Sprintf("%s/cosmos/gov/v1beta1/proposals/%s/votes/%s", val.APIAddress, "", voterAddressBase64),
 			true,
+			types.NewNonSplitVoteOption(types.OptionYes),
 		},
 		{
 			"get non existing proposal",
 			fmt.Sprintf("%s/cosmos/gov/v1beta1/proposals/%s/votes/%s", val.APIAddress, "10", voterAddressBase64),
 			true,
+			types.NewNonSplitVoteOption(types.OptionYes),
 		},
 		{
 			"get proposal with wrong voter address",
 			fmt.Sprintf("%s/cosmos/gov/v1beta1/proposals/%s/votes/%s", val.APIAddress, "1", "wrongVoterAddress"),
 			true,
+			types.NewNonSplitVoteOption(types.OptionYes),
 		},
 		{
 			"get proposal with id",
 			fmt.Sprintf("%s/cosmos/gov/v1beta1/proposals/%s/votes/%s", val.APIAddress, "1", voterAddressBase64),
 			false,
+			types.NewNonSplitVoteOption(types.OptionYes),
+		},
+		{
+			"get proposal with id for split vote",
+			fmt.Sprintf("%s/cosmos/gov/v1beta1/proposals/%s/votes/%s", val.APIAddress, "3", voterAddressBase64),
+			false,
+			types.WeightedVoteOptions{
+				types.WeightedVoteOption{Option: types.OptionYes, Weight: sdk.NewDecWithPrec(60, 2)},
+				types.WeightedVoteOption{Option: types.OptionNo, Weight: sdk.NewDecWithPrec(30, 2)},
+				types.WeightedVoteOption{Option: types.OptionAbstain, Weight: sdk.NewDecWithPrec(5, 2)},
+				types.WeightedVoteOption{Option: types.OptionNoWithVeto, Weight: sdk.NewDecWithPrec(5, 2)},
+			},
 		},
 	}
 
@@ -193,7 +221,11 @@ func (s *IntegrationTestSuite) TestGetProposalVoteGRPC() {
 			} else {
 				s.Require().NoError(err)
 				s.Require().NotEmpty(vote.Vote)
-				s.Require().Equal(types.OptionYes, vote.Vote.Option)
+				s.Require().Equal(len(vote.Vote.Options), len(tc.expVoteOptions))
+				for i, option := range tc.expVoteOptions {
+					s.Require().Equal(option.Option, vote.Vote.Options[i].Option)
+					s.Require().True(option.Weight.Equal(vote.Vote.Options[i].Weight))
+				}
 			}
 		})
 	}

x/gov/client/rest/rest.go

@@ -58,3 +58,10 @@ type VoteReq struct {
 	Voter   sdk.AccAddress `json:"voter" yaml:"voter"`   // address of the voter
 	Option  string         `json:"option" yaml:"option"` // option from OptionSet chosen by the voter
 }
+
+// WeightedVoteReq defines the properties of a vote request's body.
+type WeightedVoteReq struct {
+	BaseReq rest.BaseReq   `json:"base_req" yaml:"base_req"`
+	Voter   sdk.AccAddress `json:"voter" yaml:"voter"`     // address of the voter
+	Options string         `json:"options" yaml:"options"` // weighted options from OptionSet chosen by the voter
+}

x/gov/client/rest/tx.go

@@ -22,6 +22,7 @@ func registerTxHandlers(clientCtx client.Context, r *mux.Router, phs []ProposalR
 	r.HandleFunc("/gov/proposals", newPostProposalHandlerFn(clientCtx)).Methods("POST")
 	r.HandleFunc(fmt.Sprintf("/gov/proposals/{%s}/deposits", RestProposalID), newDepositHandlerFn(clientCtx)).Methods("POST")
 	r.HandleFunc(fmt.Sprintf("/gov/proposals/{%s}/votes", RestProposalID), newVoteHandlerFn(clientCtx)).Methods("POST")
+	r.HandleFunc(fmt.Sprintf("/gov/proposals/{%s}/weightedvotes", RestProposalID), newWeightedVoteHandlerFn(clientCtx)).Methods("POST")
 }
 
 func newPostProposalHandlerFn(clientCtx client.Context) http.HandlerFunc {
@@ -125,3 +126,44 @@ func newVoteHandlerFn(clientCtx client.Context) http.HandlerFunc {
 		tx.WriteGeneratedTxResponse(clientCtx, w, req.BaseReq, msg)
 	}
 }
+
+func newWeightedVoteHandlerFn(clientCtx client.Context) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		vars := mux.Vars(r)
+		strProposalID := vars[RestProposalID]
+
+		if len(strProposalID) == 0 {
+			rest.WriteErrorResponse(w, http.StatusBadRequest, "proposalId required but not specified")
+			return
+		}
+
+		proposalID, ok := rest.ParseUint64OrReturnBadRequest(w, strProposalID)
+		if !ok {
+			return
+		}
+
+		var req WeightedVoteReq
+		if !rest.ReadRESTReq(w, r, clientCtx.LegacyAmino, &req) {
+			return
+		}
+
+		req.BaseReq = req.BaseReq.Sanitize()
+		if !req.BaseReq.ValidateBasic(w) {
+			return
+		}
+
+		// Figure out which vote options user chose
+		options, err := types.WeightedVoteOptionsFromString(gcutils.NormalizeWeightedVoteOptions(req.Options))
+		if rest.CheckBadRequestError(w, err) {
+			return
+		}
+
+		// create the message
+		msg := types.NewMsgWeightedVote(req.Voter, proposalID, options)
+		if rest.CheckBadRequestError(w, msg.ValidateBasic()) {
+			return
+		}
+
+		tx.WriteGeneratedTxResponse(clientCtx, w, req.BaseReq, msg)
+	}
+}

x/gov/client/testutil/helpers.go

@@ -41,5 +41,5 @@ func MsgVote(clientCtx client.Context, from, id, vote string, extraArgs ...strin
 
 	args = append(args, extraArgs...)
 
-	return clitestutil.ExecTestCLICmd(clientCtx, govcli.NewCmdVote(), args)
+	return clitestutil.ExecTestCLICmd(clientCtx, govcli.NewCmdWeightedVote(), args)
 }

x/gov/client/utils/query.go

@@ -80,6 +80,7 @@ func QueryVotesByTxQuery(clientCtx client.Context, params types.QueryProposalVot
 	var (
 		events = []string{
 			fmt.Sprintf("%s.%s='%s'", sdk.EventTypeMessage, sdk.AttributeKeyAction, types.TypeMsgVote),
+			fmt.Sprintf("%s.%s='%s'", sdk.EventTypeMessage, sdk.AttributeKeyAction, types.TypeMsgWeightedVote),
 			fmt.Sprintf("%s.%s='%s'", types.EventTypeProposalVote, types.AttributeKeyProposalID, []byte(fmt.Sprintf("%d", params.ProposalID))),
 		}
 		votes      []types.Vote
@@ -101,7 +102,15 @@ func QueryVotesByTxQuery(clientCtx client.Context, params types.QueryProposalVot
 					votes = append(votes, types.Vote{
 						Voter:      voteMsg.Voter,
 						ProposalId: params.ProposalID,
-						Option:     voteMsg.Option,
+						Options:    types.NewNonSplitVoteOption(voteMsg.Option),
+					})
+				} else if msg.Type() == types.TypeMsgWeightedVote {
+					voteMsg := msg.(*types.MsgWeightedVote)
+
+					votes = append(votes, types.Vote{
+						Voter:      voteMsg.Voter,
+						ProposalId: params.ProposalID,
+						Options:    voteMsg.Options,
 					})
 				}
 			}
@@ -148,7 +157,22 @@ func QueryVoteByTxQuery(clientCtx client.Context, params types.QueryVoteParams)
 				vote := types.Vote{
 					Voter:      voteMsg.Voter,
 					ProposalId: params.ProposalID,
-					Option:     voteMsg.Option,
+					Options:    types.NewNonSplitVoteOption(voteMsg.Option),
+				}
+
+				bz, err := clientCtx.JSONMarshaler.MarshalJSON(&vote)
+				if err != nil {
+					return nil, err
+				}
+
+				return bz, nil
+			} else if msg.Type() == types.TypeMsgWeightedVote {
+				voteMsg := msg.(*types.MsgWeightedVote)
+
+				vote := types.Vote{
+					Voter:      voteMsg.Voter,
+					ProposalId: params.ProposalID,
+					Options:    voteMsg.Options,
 				}
 
 				bz, err := clientCtx.JSONMarshaler.MarshalJSON(&vote)

x/gov/client/utils/query_test.go

@@ -75,7 +75,7 @@ func TestGetPaginatedVotes(t *testing.T) {
 	}
 	acc2Msgs := []sdk.Msg{
 		types.NewMsgVote(acc2, 0, types.OptionYes),
-		types.NewMsgVote(acc2, 0, types.OptionYes),
+		types.NewMsgWeightedVote(acc2, 0, types.NewNonSplitVoteOption(types.OptionYes)),
 	}
 	for _, tc := range []testCase{
 		{
@@ -87,8 +87,8 @@ func TestGetPaginatedVotes(t *testing.T) {
 				acc2Msgs[:1],
 			},
 			votes: []types.Vote{
-				types.NewVote(0, acc1, types.OptionYes),
+				types.NewVote(0, acc1, types.NewNonSplitVoteOption(types.OptionYes)),
-				types.NewVote(0, acc2, types.OptionYes)},
+				types.NewVote(0, acc2, types.NewNonSplitVoteOption(types.OptionYes))},
 		},
 		{
 			description: "2MsgPerTx1Chunk",
@@ -99,8 +99,9 @@ func TestGetPaginatedVotes(t *testing.T) {
 				acc2Msgs,
 			},
 			votes: []types.Vote{
-				types.NewVote(0, acc1, types.OptionYes),
+				types.NewVote(0, acc1, types.NewNonSplitVoteOption(types.OptionYes)),
-				types.NewVote(0, acc1, types.OptionYes)},
+				types.NewVote(0, acc1, types.NewNonSplitVoteOption(types.OptionYes)),
+			},
 		},
 		{
 			description: "2MsgPerTx2Chunk",
@@ -111,8 +112,9 @@ func TestGetPaginatedVotes(t *testing.T) {
 				acc2Msgs,
 			},
 			votes: []types.Vote{
-				types.NewVote(0, acc2, types.OptionYes),
+				types.NewVote(0, acc2, types.NewNonSplitVoteOption(types.OptionYes)),
-				types.NewVote(0, acc2, types.OptionYes)},
+				types.NewVote(0, acc2, types.NewNonSplitVoteOption(types.OptionYes)),
+			},
 		},
 		{
 			description: "IncompleteSearchTx",
@@ -121,7 +123,7 @@ func TestGetPaginatedVotes(t *testing.T) {
 			msgs: [][]sdk.Msg{
 				acc1Msgs[:1],
 			},
-			votes: []types.Vote{types.NewVote(0, acc1, types.OptionYes)},
+			votes: []types.Vote{types.NewVote(0, acc1, types.NewNonSplitVoteOption(types.OptionYes))},
 		},
 		{
 			description: "InvalidPage",

x/gov/client/utils/utils.go

@@ -1,6 +1,10 @@
 package utils
 
-import "github.com/cosmos/cosmos-sdk/x/gov/types"
+import (
+	"strings"
+
+	"github.com/cosmos/cosmos-sdk/x/gov/types"
+)
 
 // NormalizeVoteOption - normalize user specified vote option
 func NormalizeVoteOption(option string) string {
@@ -22,6 +26,20 @@ func NormalizeVoteOption(option string) string {
 	}
 }
 
+// NormalizeWeightedVoteOptions - normalize normalize vote options param string
+func NormalizeWeightedVoteOptions(options string) string {
+	newOptions := []string{}
+	for _, option := range strings.Split(options, ",") {
+		fields := strings.Split(option, "=")
+		fields[0] = NormalizeVoteOption(fields[0])
+		if len(fields) < 2 {
+			fields = append(fields, "1")
+		}
+		newOptions = append(newOptions, strings.Join(fields, "="))
+	}
+	return strings.Join(newOptions, ",")
+}
+
 //NormalizeProposalType - normalize user specified proposal type
 func NormalizeProposalType(proposalType string) string {
 	switch proposalType {

x/gov/handler.go

@@ -27,6 +27,10 @@ func NewHandler(k keeper.Keeper) sdk.Handler {
 			res, err := msgServer.Vote(sdk.WrapSDKContext(ctx), msg)
 			return sdk.WrapServiceResult(ctx, res, err)
 
+		case *types.MsgWeightedVote:
+			res, err := msgServer.WeightedVote(sdk.WrapSDKContext(ctx), msg)
+			return sdk.WrapServiceResult(ctx, res, err)
+
 		default:
 			return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized %s message type: %T", types.ModuleName, msg)
 		}

x/gov/keeper/grpc_query_test.go

@@ -183,7 +183,7 @@ func (suite *KeeperTestSuite) TestGRPCQueryProposals() {
 			func() {
 				testProposals[1].Status = types.StatusVotingPeriod
 				app.GovKeeper.SetProposal(ctx, testProposals[1])
-				suite.Require().NoError(app.GovKeeper.AddVote(ctx, testProposals[1].ProposalId, addrs[0], types.OptionAbstain))
+				suite.Require().NoError(app.GovKeeper.AddVote(ctx, testProposals[1].ProposalId, addrs[0], types.NewNonSplitVoteOption(types.OptionAbstain)))
 
 				req = &types.QueryProposalsRequest{
 					Voter: addrs[0].String(),
@@ -291,14 +291,14 @@ func (suite *KeeperTestSuite) TestGRPCQueryVote() {
 			func() {
 				proposal.Status = types.StatusVotingPeriod
 				app.GovKeeper.SetProposal(ctx, proposal)
-				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[0], types.OptionAbstain))
+				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[0], types.NewNonSplitVoteOption(types.OptionAbstain)))
 
 				req = &types.QueryVoteRequest{
 					ProposalId: proposal.ProposalId,
 					Voter:      addrs[0].String(),
 				}
 
-				expRes = &types.QueryVoteResponse{Vote: types.NewVote(proposal.ProposalId, addrs[0], types.OptionAbstain)}
+				expRes = &types.QueryVoteResponse{Vote: types.NewVote(proposal.ProposalId, addrs[0], types.NewNonSplitVoteOption(types.OptionAbstain))}
 			},
 			true,
 		},
@@ -395,15 +395,15 @@ func (suite *KeeperTestSuite) TestGRPCQueryVotes() {
 				app.GovKeeper.SetProposal(ctx, proposal)
 
 				votes = []types.Vote{
-					{proposal.ProposalId, addrs[0].String(), types.OptionAbstain},
+					{proposal.ProposalId, addrs[0].String(), types.NewNonSplitVoteOption(types.OptionAbstain)},
-					{proposal.ProposalId, addrs[1].String(), types.OptionYes},
+					{proposal.ProposalId, addrs[1].String(), types.NewNonSplitVoteOption(types.OptionYes)},
 				}
 				accAddr1, err1 := sdk.AccAddressFromBech32(votes[0].Voter)
 				accAddr2, err2 := sdk.AccAddressFromBech32(votes[1].Voter)
 				suite.Require().NoError(err1)
 				suite.Require().NoError(err2)
-				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, accAddr1, votes[0].Option))
+				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, accAddr1, votes[0].Options))
-				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, accAddr2, votes[1].Option))
+				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, accAddr2, votes[1].Options))
 
 				req = &types.QueryVotesRequest{
 					ProposalId: proposal.ProposalId,
@@ -769,9 +769,9 @@ func (suite *KeeperTestSuite) TestGRPCQueryTally() {
 				proposal.Status = types.StatusVotingPeriod
 				app.GovKeeper.SetProposal(ctx, proposal)
 
-				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[0], types.OptionYes))
+				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[0], types.NewNonSplitVoteOption(types.OptionYes)))
-				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[1], types.OptionYes))
+				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[1], types.NewNonSplitVoteOption(types.OptionYes)))
-				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[2], types.OptionYes))
+				suite.Require().NoError(app.GovKeeper.AddVote(ctx, proposal.ProposalId, addrs[2], types.NewNonSplitVoteOption(types.OptionYes)))
 
 				req = &types.QueryTallyResultRequest{ProposalId: proposal.ProposalId}
 

x/gov/keeper/msg_server.go

@@ -64,7 +64,7 @@ func (k msgServer) Vote(goCtx context.Context, msg *types.MsgVote) (*types.MsgVo
 	if accErr != nil {
 		return nil, accErr
 	}
-	err := k.Keeper.AddVote(ctx, msg.ProposalId, accAddr, msg.Option)
+	err := k.Keeper.AddVote(ctx, msg.ProposalId, accAddr, types.NewNonSplitVoteOption(msg.Option))
 	if err != nil {
 		return nil, err
 	}
@@ -88,6 +88,36 @@ func (k msgServer) Vote(goCtx context.Context, msg *types.MsgVote) (*types.MsgVo
 	return &types.MsgVoteResponse{}, nil
 }
 
+func (k msgServer) WeightedVote(goCtx context.Context, msg *types.MsgWeightedVote) (*types.MsgWeightedVoteResponse, error) {
+	ctx := sdk.UnwrapSDKContext(goCtx)
+	accAddr, accErr := sdk.AccAddressFromBech32(msg.Voter)
+	if accErr != nil {
+		return nil, accErr
+	}
+	err := k.Keeper.AddVote(ctx, msg.ProposalId, accAddr, msg.Options)
+	if err != nil {
+		return nil, err
+	}
+
+	defer telemetry.IncrCounterWithLabels(
+		[]string{types.ModuleName, "vote"},
+		1,
+		[]metrics.Label{
+			telemetry.NewLabel("proposal_id", strconv.Itoa(int(msg.ProposalId))),
+		},
+	)
+
+	ctx.EventManager().EmitEvent(
+		sdk.NewEvent(
+			sdk.EventTypeMessage,
+			sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
+			sdk.NewAttribute(sdk.AttributeKeySender, msg.Voter),
+		),
+	)
+
+	return &types.MsgWeightedVoteResponse{}, nil
+}
+
 func (k msgServer) Deposit(goCtx context.Context, msg *types.MsgDeposit) (*types.MsgDepositResponse, error) {
 	ctx := sdk.UnwrapSDKContext(goCtx)
 	accAddr, err := sdk.AccAddressFromBech32(msg.Depositor)

x/gov/keeper/proposal_test.go

@@ -101,7 +101,7 @@ func TestGetProposalsFiltered(t *testing.T) {
 
 			if i%2 == 0 {
 				d := types.NewDeposit(proposalID, addr1, nil)
-				v := types.NewVote(proposalID, addr1, types.OptionYes)
+				v := types.NewVote(proposalID, addr1, types.NewNonSplitVoteOption(types.OptionYes))
 				app.GovKeeper.SetDeposit(ctx, d)
 				app.GovKeeper.SetVote(ctx, v)
 			}

x/gov/keeper/querier_test.go

@@ -251,13 +251,13 @@ func TestQueries(t *testing.T) {
 	require.Equal(t, proposal3, proposals[1])
 
 	// Addrs[0] votes on proposals #2 & #3
-	vote1 := types.NewVote(proposal2.ProposalId, TestAddrs[0], types.OptionYes)
+	vote1 := types.NewVote(proposal2.ProposalId, TestAddrs[0], types.NewNonSplitVoteOption(types.OptionYes))
-	vote2 := types.NewVote(proposal3.ProposalId, TestAddrs[0], types.OptionYes)
+	vote2 := types.NewVote(proposal3.ProposalId, TestAddrs[0], types.NewNonSplitVoteOption(types.OptionYes))
 	app.GovKeeper.SetVote(ctx, vote1)
 	app.GovKeeper.SetVote(ctx, vote2)
 
 	// Addrs[1] votes on proposal #3
-	vote3 := types.NewVote(proposal3.ProposalId, TestAddrs[1], types.OptionYes)
+	vote3 := types.NewVote(proposal3.ProposalId, TestAddrs[1], types.NewNonSplitVoteOption(types.OptionYes))
 	app.GovKeeper.SetVote(ctx, vote3)
 
 	// Test query voted by TestAddrs[0]
@@ -323,7 +323,7 @@ func TestPaginatedVotesQuery(t *testing.T) {
 		vote := types.Vote{
 			ProposalId: proposal.ProposalId,
 			Voter:      addr.String(),
-			Option:     types.OptionYes,
+			Options:    types.NewNonSplitVoteOption(types.OptionYes),
 		}
 		votes[i] = vote
 		app.GovKeeper.SetVote(ctx, vote)

x/gov/keeper/tally.go

@@ -27,7 +27,7 @@ func (keeper Keeper) Tally(ctx sdk.Context, proposal types.Proposal) (passes boo
 			validator.GetBondedTokens(),
 			validator.GetDelegatorShares(),
 			sdk.ZeroDec(),
-			types.OptionEmpty,
+			types.WeightedVoteOptions{},
 		)
 
 		return false
@@ -43,7 +43,7 @@ func (keeper Keeper) Tally(ctx sdk.Context, proposal types.Proposal) (passes boo
 
 		valAddrStr := sdk.ValAddress(voter.Bytes()).String()
 		if val, ok := currValidators[valAddrStr]; ok {
-			val.Vote = vote.Option
+			val.Vote = vote.Options
 			currValidators[valAddrStr] = val
 		}
 
@@ -60,7 +60,10 @@ func (keeper Keeper) Tally(ctx sdk.Context, proposal types.Proposal) (passes boo
 				// delegation shares * bonded / total shares
 				votingPower := delegation.GetShares().MulInt(val.BondedTokens).Quo(val.DelegatorShares)
 
-				results[vote.Option] = results[vote.Option].Add(votingPower)
+				for _, option := range vote.Options {
+					subPower := votingPower.Mul(option.Weight)
+					results[option.Option] = results[option.Option].Add(subPower)
+				}
 				totalVotingPower = totalVotingPower.Add(votingPower)
 			}
 
@@ -73,14 +76,17 @@ func (keeper Keeper) Tally(ctx sdk.Context, proposal types.Proposal) (passes boo
 
 	// iterate over the validators again to tally their voting power
 	for _, val := range currValidators {
-		if val.Vote == types.OptionEmpty {
+		if len(val.Vote) == 0 {
 			continue
 		}
 
 		sharesAfterDeductions := val.DelegatorShares.Sub(val.DelegatorDeductions)
 		votingPower := sharesAfterDeductions.MulInt(val.BondedTokens).Quo(val.DelegatorShares)
 
-		results[val.Vote] = results[val.Vote].Add(votingPower)
+		for _, option := range val.Vote {
+			subPower := votingPower.Mul(option.Weight)
+			results[option.Option] = results[option.Option].Add(subPower)
+		}
 		totalVotingPower = totalVotingPower.Add(votingPower)
 	}
 

x/gov/keeper/tally_test.go

@@ -50,7 +50,7 @@ func TestTallyNoQuorum(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	err = app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionYes)
+	err = app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionYes))
 	require.Nil(t, err)
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
@@ -73,9 +73,9 @@ func TestTallyOnlyValidatorsAllYes(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.NewNonSplitVoteOption(types.OptionYes)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -99,8 +99,8 @@ func TestTallyOnlyValidators51No(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.NewNonSplitVoteOption(types.OptionNo)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -123,8 +123,8 @@ func TestTallyOnlyValidators51Yes(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.NewNonSplitVoteOption(types.OptionNo)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.NewNonSplitVoteOption(types.OptionYes)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -148,9 +148,9 @@ func TestTallyOnlyValidatorsVetoed(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[2], types.OptionNoWithVeto))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[2], types.NewNonSplitVoteOption(types.OptionNoWithVeto)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -174,9 +174,9 @@ func TestTallyOnlyValidatorsAbstainPasses(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.OptionAbstain))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.NewNonSplitVoteOption(types.OptionAbstain)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.NewNonSplitVoteOption(types.OptionNo)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[2], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[2], types.NewNonSplitVoteOption(types.OptionYes)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -200,9 +200,9 @@ func TestTallyOnlyValidatorsAbstainFails(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.OptionAbstain))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[0], types.NewNonSplitVoteOption(types.OptionAbstain)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[1], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[2], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddrs[2], types.NewNonSplitVoteOption(types.OptionNo)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -227,8 +227,8 @@ func TestTallyOnlyValidatorsNonVoter(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddr1, types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddr1, types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddr2, types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, valAccAddr2, types.NewNonSplitVoteOption(types.OptionNo)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -261,10 +261,10 @@ func TestTallyDelgatorOverride(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[3], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[3], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[4], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[4], types.NewNonSplitVoteOption(types.OptionNo)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -297,9 +297,9 @@ func TestTallyDelgatorInherit(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionNo)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.NewNonSplitVoteOption(types.OptionNo)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.NewNonSplitVoteOption(types.OptionYes)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -336,10 +336,10 @@ func TestTallyDelgatorMultipleOverride(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[3], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[3], types.NewNonSplitVoteOption(types.OptionNo)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -378,9 +378,9 @@ func TestTallyDelgatorMultipleInherit(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.NewNonSplitVoteOption(types.OptionNo)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.NewNonSplitVoteOption(types.OptionNo)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -421,9 +421,8 @@ func TestTallyJailedValidator(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.NewNonSplitVoteOption(types.OptionNo)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.OptionNo))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)
@@ -454,9 +453,9 @@ func TestTallyValidatorMultipleDelegations(t *testing.T) {
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionYes)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.OptionNo))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.NewNonSplitVoteOption(types.OptionNo)))
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[2], types.NewNonSplitVoteOption(types.OptionYes)))
 
 	proposal, ok := app.GovKeeper.GetProposal(ctx, proposalID)
 	require.True(t, ok)

x/gov/keeper/vote.go

@@ -9,7 +9,7 @@ import (
 )
 
 // AddVote adds a vote on a specific proposal
-func (keeper Keeper) AddVote(ctx sdk.Context, proposalID uint64, voterAddr sdk.AccAddress, option types.VoteOption) error {
+func (keeper Keeper) AddVote(ctx sdk.Context, proposalID uint64, voterAddr sdk.AccAddress, options types.WeightedVoteOptions) error {
 	proposal, ok := keeper.GetProposal(ctx, proposalID)
 	if !ok {
 		return sdkerrors.Wrapf(types.ErrUnknownProposal, "%d", proposalID)
@@ -18,17 +18,19 @@ func (keeper Keeper) AddVote(ctx sdk.Context, proposalID uint64, voterAddr sdk.A
 		return sdkerrors.Wrapf(types.ErrInactiveProposal, "%d", proposalID)
 	}
 
-	if !types.ValidVoteOption(option) {
+	for _, option := range options {
+		if !types.ValidWeightedVoteOption(option) {
 			return sdkerrors.Wrap(types.ErrInvalidVote, option.String())
 		}
+	}
 
-	vote := types.NewVote(proposalID, voterAddr, option)
+	vote := types.NewVote(proposalID, voterAddr, options)
 	keeper.SetVote(ctx, vote)
 
 	ctx.EventManager().EmitEvent(
 		sdk.NewEvent(
 			types.EventTypeProposalVote,
-			sdk.NewAttribute(types.AttributeKeyOption, option.String()),
+			sdk.NewAttribute(types.AttributeKeyOption, options.String()),
 			sdk.NewAttribute(types.AttributeKeyProposalID, fmt.Sprintf("%d", proposalID)),
 		),
 	)

x/gov/keeper/vote_test.go

@@ -24,37 +24,52 @@ func TestVotes(t *testing.T) {
 
 	var invalidOption types.VoteOption = 0x10
 
-	require.Error(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionYes), "proposal not on voting period")
+	require.Error(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionYes)), "proposal not on voting period")
-	require.Error(t, app.GovKeeper.AddVote(ctx, 10, addrs[0], types.OptionYes), "invalid proposal ID")
+	require.Error(t, app.GovKeeper.AddVote(ctx, 10, addrs[0], types.NewNonSplitVoteOption(types.OptionYes)), "invalid proposal ID")
 
 	proposal.Status = types.StatusVotingPeriod
 	app.GovKeeper.SetProposal(ctx, proposal)
 
-	require.Error(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], invalidOption), "invalid option")
+	require.Error(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(invalidOption)), "invalid option")
 
 	// Test first vote
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionAbstain))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionAbstain)))
 	vote, found := app.GovKeeper.GetVote(ctx, proposalID, addrs[0])
 	require.True(t, found)
 	require.Equal(t, addrs[0].String(), vote.Voter)
 	require.Equal(t, proposalID, vote.ProposalId)
-	require.Equal(t, types.OptionAbstain, vote.Option)
+	require.True(t, len(vote.Options) == 1)
+	require.Equal(t, types.OptionAbstain, vote.Options[0].Option)
 
 	// Test change of vote
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.OptionYes))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[0], types.NewNonSplitVoteOption(types.OptionYes)))
 	vote, found = app.GovKeeper.GetVote(ctx, proposalID, addrs[0])
 	require.True(t, found)
 	require.Equal(t, addrs[0].String(), vote.Voter)
 	require.Equal(t, proposalID, vote.ProposalId)
-	require.Equal(t, types.OptionYes, vote.Option)
+	require.True(t, len(vote.Options) == 1)
+	require.Equal(t, types.OptionYes, vote.Options[0].Option)
 
 	// Test second vote
-	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.OptionNoWithVeto))
+	require.NoError(t, app.GovKeeper.AddVote(ctx, proposalID, addrs[1], types.WeightedVoteOptions{
+		types.WeightedVoteOption{Option: types.OptionYes, Weight: sdk.NewDecWithPrec(60, 2)},
+		types.WeightedVoteOption{Option: types.OptionNo, Weight: sdk.NewDecWithPrec(30, 2)},
+		types.WeightedVoteOption{Option: types.OptionAbstain, Weight: sdk.NewDecWithPrec(5, 2)},
+		types.WeightedVoteOption{Option: types.OptionNoWithVeto, Weight: sdk.NewDecWithPrec(5, 2)},
+	}))
 	vote, found = app.GovKeeper.GetVote(ctx, proposalID, addrs[1])
 	require.True(t, found)
 	require.Equal(t, addrs[1].String(), vote.Voter)
 	require.Equal(t, proposalID, vote.ProposalId)
-	require.Equal(t, types.OptionNoWithVeto, vote.Option)
+	require.True(t, len(vote.Options) == 4)
+	require.Equal(t, types.OptionYes, vote.Options[0].Option)
+	require.Equal(t, types.OptionNo, vote.Options[1].Option)
+	require.Equal(t, types.OptionAbstain, vote.Options[2].Option)
+	require.Equal(t, types.OptionNoWithVeto, vote.Options[3].Option)
+	require.True(t, vote.Options[0].Weight.Equal(sdk.NewDecWithPrec(60, 2)))
+	require.True(t, vote.Options[1].Weight.Equal(sdk.NewDecWithPrec(30, 2)))
+	require.True(t, vote.Options[2].Weight.Equal(sdk.NewDecWithPrec(5, 2)))
+	require.True(t, vote.Options[3].Weight.Equal(sdk.NewDecWithPrec(5, 2)))
 
 	// Test vote iterator
 	// NOTE order of deposits is determined by the addresses
@@ -63,8 +78,13 @@ func TestVotes(t *testing.T) {
 	require.Equal(t, votes, app.GovKeeper.GetVotes(ctx, proposalID))
 	require.Equal(t, addrs[0].String(), votes[0].Voter)
 	require.Equal(t, proposalID, votes[0].ProposalId)
-	require.Equal(t, types.OptionYes, votes[0].Option)
+	require.True(t, len(votes[0].Options) == 1)
+	require.Equal(t, types.OptionYes, votes[0].Options[0].Option)
 	require.Equal(t, addrs[1].String(), votes[1].Voter)
 	require.Equal(t, proposalID, votes[1].ProposalId)
-	require.Equal(t, types.OptionNoWithVeto, votes[1].Option)
+	require.True(t, len(votes[1].Options) == 4)
+	require.True(t, votes[1].Options[0].Weight.Equal(sdk.NewDecWithPrec(60, 2)))
+	require.True(t, votes[1].Options[1].Weight.Equal(sdk.NewDecWithPrec(30, 2)))
+	require.True(t, votes[1].Options[2].Weight.Equal(sdk.NewDecWithPrec(5, 2)))
+	require.True(t, votes[1].Options[3].Weight.Equal(sdk.NewDecWithPrec(5, 2)))
 }

x/gov/legacy/v040/migrate.go

@@ -118,7 +118,7 @@ func Migrate(oldGovState v036gov.GenesisState) *v040gov.GenesisState {
 		newVotes[i] = v040gov.Vote{
 			ProposalId: oldVote.ProposalID,
 			Voter:      oldVote.Voter.String(),
-			Option:     migrateVoteOption(oldVote.Option),
+			Options:    v040gov.NewNonSplitVoteOption(migrateVoteOption(oldVote.Option)),
 		}
 	}
 

x/gov/simulation/decoder_test.go

@@ -34,7 +34,7 @@ func TestDecodeStore(t *testing.T) {
 	proposalIDBz := make([]byte, 8)
 	binary.LittleEndian.PutUint64(proposalIDBz, 1)
 	deposit := types.NewDeposit(1, delAddr1, sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.OneInt())))
-	vote := types.NewVote(1, delAddr1, types.OptionYes)
+	vote := types.NewVote(1, delAddr1, types.NewNonSplitVoteOption(types.OptionYes))
 
 	proposalBz, err := cdc.MarshalBinaryBare(&proposal)
 	require.NoError(t, err)

x/gov/simulation/operations.go

@@ -22,6 +22,7 @@ var initialProposalID = uint64(100000000000000)
 const (
 	OpWeightMsgDeposit      = "op_weight_msg_deposit"
 	OpWeightMsgVote         = "op_weight_msg_vote"
+	OpWeightMsgWeightedVote = "op_weight_msg_weighted_vote"
 )
 
 // WeightedOperations returns all the operations from the module with their respective weights
@@ -33,6 +34,7 @@ func WeightedOperations(
 	var (
 		weightMsgDeposit      int
 		weightMsgVote         int
+		weightMsgWeightedVote int
 	)
 
 	appParams.GetOrGenerate(cdc, OpWeightMsgDeposit, &weightMsgDeposit, nil,
@@ -47,6 +49,12 @@ func WeightedOperations(
 		},
 	)
 
+	appParams.GetOrGenerate(cdc, OpWeightMsgWeightedVote, &weightMsgWeightedVote, nil,
+		func(_ *rand.Rand) {
+			weightMsgWeightedVote = simappparams.DefaultWeightMsgWeightedVote
+		},
+	)
+
 	// generate the weighted operations for the proposal contents
 	var wProposalOps simulation.WeightedOperations
 
@@ -74,12 +82,16 @@ func WeightedOperations(
 			weightMsgVote,
 			SimulateMsgVote(ak, bk, k),
 		),
+		simulation.NewWeightedOperation(
+			weightMsgWeightedVote,
+			SimulateMsgWeightedVote(ak, bk, k),
+		),
 	}
 
 	return append(wProposalOps, wGovOps...)
 }
 
-// SimulateSubmitProposal simulates creating a msg Submit Proposal
+// SimulateMsgSubmitProposal simulates creating a msg Submit Proposal
 // voting on the proposal, and subsequently slashing the proposal. It is implemented using
 // future operations.
 func SimulateMsgSubmitProposal(
@@ -315,6 +327,69 @@ func operationSimulateMsgVote(ak types.AccountKeeper, bk types.BankKeeper, k kee
 	}
 }
 
+// SimulateMsgWeightedVote generates a MsgWeightedVote with random values.
+func SimulateMsgWeightedVote(ak types.AccountKeeper, bk types.BankKeeper, k keeper.Keeper) simtypes.Operation {
+	return operationSimulateMsgWeightedVote(ak, bk, k, simtypes.Account{}, -1)
+}
+
+func operationSimulateMsgWeightedVote(ak types.AccountKeeper, bk types.BankKeeper, k keeper.Keeper,
+	simAccount simtypes.Account, proposalIDInt int64) simtypes.Operation {
+	return func(
+		r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context,
+		accs []simtypes.Account, chainID string,
+	) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
+		if simAccount.Equals(simtypes.Account{}) {
+			simAccount, _ = simtypes.RandomAcc(r, accs)
+		}
+
+		var proposalID uint64
+
+		switch {
+		case proposalIDInt < 0:
+			var ok bool
+			proposalID, ok = randomProposalID(r, k, ctx, types.StatusVotingPeriod)
+			if !ok {
+				return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgWeightedVote, "unable to generate proposalID"), nil, nil
+			}
+		default:
+			proposalID = uint64(proposalIDInt)
+		}
+
+		options := randomWeightedVotingOptions(r)
+		msg := types.NewMsgWeightedVote(simAccount.Address, proposalID, options)
+
+		account := ak.GetAccount(ctx, simAccount.Address)
+		spendable := bk.SpendableCoins(ctx, account.GetAddress())
+
+		fees, err := simtypes.RandomFees(r, ctx, spendable)
+		if err != nil {
+			return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to generate fees"), nil, err
+		}
+
+		txGen := simappparams.MakeTestEncodingConfig().TxConfig
+		tx, err := helpers.GenTx(
+			txGen,
+			[]sdk.Msg{msg},
+			fees,
+			helpers.DefaultGenTxGas,
+			chainID,
+			[]uint64{account.GetAccountNumber()},
+			[]uint64{account.GetSequence()},
+			simAccount.PrivKey,
+		)
+		if err != nil {
+			return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to generate mock tx"), nil, err
+		}
+
+		_, _, err = app.Deliver(txGen.TxEncoder(), tx)
+		if err != nil {
+			return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to deliver tx"), nil, err
+		}
+
+		return simtypes.NewOperationMsg(msg, true, ""), nil, nil
+	}
+}
+
 // Pick a random deposit with a random denomination with a
 // deposit amount between (0, min(balance, minDepositAmount))
 // This is to simulate multiple users depositing to get the
@@ -393,3 +468,37 @@ func randomVotingOption(r *rand.Rand) types.VoteOption {
 		panic("invalid vote option")
 	}
 }
+
+// Pick a random weighted voting options
+func randomWeightedVotingOptions(r *rand.Rand) types.WeightedVoteOptions {
+	w1 := r.Intn(100 + 1)
+	w2 := r.Intn(100 - w1 + 1)
+	w3 := r.Intn(100 - w1 - w2 + 1)
+	w4 := 100 - w1 - w2 - w3
+	weightedVoteOptions := types.WeightedVoteOptions{}
+	if w1 > 0 {
+		weightedVoteOptions = append(weightedVoteOptions, types.WeightedVoteOption{
+			Option: types.OptionYes,
+			Weight: sdk.NewDecWithPrec(int64(w1), 2),
+		})
+	}
+	if w2 > 0 {
+		weightedVoteOptions = append(weightedVoteOptions, types.WeightedVoteOption{
+			Option: types.OptionAbstain,
+			Weight: sdk.NewDecWithPrec(int64(w2), 2),
+		})
+	}
+	if w3 > 0 {
+		weightedVoteOptions = append(weightedVoteOptions, types.WeightedVoteOption{
+			Option: types.OptionNo,
+			Weight: sdk.NewDecWithPrec(int64(w3), 2),
+		})
+	}
+	if w4 > 0 {
+		weightedVoteOptions = append(weightedVoteOptions, types.WeightedVoteOption{
+			Option: types.OptionNoWithVeto,
+			Weight: sdk.NewDecWithPrec(int64(w4), 2),
+		})
+	}
+	return weightedVoteOptions
+}

x/gov/simulation/operations_test.go

@@ -80,6 +80,7 @@ func TestWeightedOperations(t *testing.T) {
 		{2, types.ModuleName, "submit_proposal"},
 		{simappparams.DefaultWeightMsgDeposit, types.ModuleName, types.TypeMsgDeposit},
 		{simappparams.DefaultWeightMsgVote, types.ModuleName, types.TypeMsgVote},
+		{simappparams.DefaultWeightMsgWeightedVote, types.ModuleName, types.TypeMsgWeightedVote},
 	}
 
 	for i, w := range weightesOps {
@@ -205,7 +206,48 @@ func TestSimulateMsgVote(t *testing.T) {
 	require.Equal(t, types.OptionYes, msg.Option)
 	require.Equal(t, "gov", msg.Route())
 	require.Equal(t, types.TypeMsgVote, msg.Type())
+}
 
+// TestSimulateMsgWeightedVote tests the normal scenario of a valid message of type TypeMsgWeightedVote.
+// Abonormal scenarios, where the message is created by an errors are not tested here.
+func TestSimulateMsgWeightedVote(t *testing.T) {
+	app, ctx := createTestApp(false)
+	blockTime := time.Now().UTC()
+	ctx = ctx.WithBlockTime(blockTime)
+
+	// setup 3 accounts
+	s := rand.NewSource(1)
+	r := rand.New(s)
+	accounts := getTestingAccounts(t, r, app, ctx, 3)
+
+	// setup a proposal
+	content := types.NewTextProposal("Test", "description")
+
+	submitTime := ctx.BlockHeader().Time
+	depositPeriod := app.GovKeeper.GetDepositParams(ctx).MaxDepositPeriod
+
+	proposal, err := types.NewProposal(content, 1, submitTime, submitTime.Add(depositPeriod))
+	require.NoError(t, err)
+
+	app.GovKeeper.ActivateVotingPeriod(ctx, proposal)
+
+	// begin a new block
+	app.BeginBlock(abci.RequestBeginBlock{Header: tmproto.Header{Height: app.LastBlockHeight() + 1, AppHash: app.LastCommitID().Hash, Time: blockTime}})
+
+	// execute operation
+	op := simulation.SimulateMsgWeightedVote(app.AccountKeeper, app.BankKeeper, app.GovKeeper)
+	operationMsg, _, err := op(r, app.BaseApp, ctx, accounts, "")
+	require.NoError(t, err)
+
+	var msg types.MsgWeightedVote
+	types.ModuleCdc.UnmarshalJSON(operationMsg.Msg, &msg)
+
+	require.True(t, operationMsg.OK)
+	require.Equal(t, uint64(1), msg.ProposalId)
+	require.Equal(t, "cosmos1ghekyjucln7y67ntx7cf27m9dpuxxemn4c8g4r", msg.Voter)
+	require.True(t, len(msg.Options) >= 1)
+	require.Equal(t, "gov", msg.Route())
+	require.Equal(t, types.TypeMsgWeightedVote, msg.Type())
 }
 
 // returns context and an app with updated mint keeper

x/gov/spec/04_events.md

@@ -41,6 +41,16 @@ The governance module emits the following events:
 | message       | action        | vote            |
 | message       | sender        | {senderAddress} |
 
+### MsgWeightedVote
+
+| Type          | Attribute Key | Attribute Value          |
+| ------------- | ------------- | ------------------------ |
+| proposal_vote | option        | {weightedVoteOptions}    |
+| proposal_vote | proposal_id   | {proposalID}             |
+| message       | module        | governance               |
+| message       | action        | vote                     |
+| message       | sender        | {senderAddress}          |
+
 ### MsgDeposit
 
 | Type                 | Attribute Key       | Attribute Value |

x/gov/types/codec.go

@@ -15,6 +15,7 @@ func RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
 	cdc.RegisterConcrete(&MsgSubmitProposal{}, "cosmos-sdk/MsgSubmitProposal", nil)
 	cdc.RegisterConcrete(&MsgDeposit{}, "cosmos-sdk/MsgDeposit", nil)
 	cdc.RegisterConcrete(&MsgVote{}, "cosmos-sdk/MsgVote", nil)
+	cdc.RegisterConcrete(&MsgWeightedVote{}, "cosmos-sdk/MsgWeightedVote", nil)
 	cdc.RegisterConcrete(&TextProposal{}, "cosmos-sdk/TextProposal", nil)
 }
 
@@ -22,6 +23,7 @@ func RegisterInterfaces(registry types.InterfaceRegistry) {
 	registry.RegisterImplementations((*sdk.Msg)(nil),
 		&MsgSubmitProposal{},
 		&MsgVote{},
+		&MsgWeightedVote{},
 		&MsgDeposit{},
 	)
 	registry.RegisterInterface(

x/gov/types/gov.pb.go

@@ -121,6 +121,44 @@ func (ProposalStatus) EnumDescriptor() ([]byte, []int) {
 	return fileDescriptor_6e82113c1a9a4b7c, []int{1}
 }
 
+// WeightedVoteOption defines a unit of vote for vote split.
+type WeightedVoteOption struct {
+	Option VoteOption                             `protobuf:"varint,1,opt,name=option,proto3,enum=cosmos.gov.v1beta1.VoteOption" json:"option,omitempty"`
+	Weight github_com_cosmos_cosmos_sdk_types.Dec `protobuf:"bytes,2,opt,name=weight,proto3,customtype=github.com/cosmos/cosmos-sdk/types.Dec" json:"weight" yaml:"weight"`
+}
+
+func (m *WeightedVoteOption) Reset()      { *m = WeightedVoteOption{} }
+func (*WeightedVoteOption) ProtoMessage() {}
+func (*WeightedVoteOption) Descriptor() ([]byte, []int) {
+	return fileDescriptor_6e82113c1a9a4b7c, []int{0}
+}
+func (m *WeightedVoteOption) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *WeightedVoteOption) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_WeightedVoteOption.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *WeightedVoteOption) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_WeightedVoteOption.Merge(m, src)
+}
+func (m *WeightedVoteOption) XXX_Size() int {
+	return m.Size()
+}
+func (m *WeightedVoteOption) XXX_DiscardUnknown() {
+	xxx_messageInfo_WeightedVoteOption.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_WeightedVoteOption proto.InternalMessageInfo
+
 // TextProposal defines a standard text proposal whose changes need to be
 // manually updated in case of approval.
 type TextProposal struct {
@@ -131,7 +169,7 @@ type TextProposal struct {
 func (m *TextProposal) Reset()      { *m = TextProposal{} }
 func (*TextProposal) ProtoMessage() {}
 func (*TextProposal) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6e82113c1a9a4b7c, []int{0}
+	return fileDescriptor_6e82113c1a9a4b7c, []int{1}
 }
 func (m *TextProposal) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -171,7 +209,7 @@ type Deposit struct {
 func (m *Deposit) Reset()      { *m = Deposit{} }
 func (*Deposit) ProtoMessage() {}
 func (*Deposit) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6e82113c1a9a4b7c, []int{1}
+	return fileDescriptor_6e82113c1a9a4b7c, []int{2}
 }
 func (m *Deposit) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -216,7 +254,7 @@ type Proposal struct {
 func (m *Proposal) Reset()      { *m = Proposal{} }
 func (*Proposal) ProtoMessage() {}
 func (*Proposal) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6e82113c1a9a4b7c, []int{2}
+	return fileDescriptor_6e82113c1a9a4b7c, []int{3}
 }
 func (m *Proposal) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -256,7 +294,7 @@ type TallyResult struct {
 func (m *TallyResult) Reset()      { *m = TallyResult{} }
 func (*TallyResult) ProtoMessage() {}
 func (*TallyResult) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6e82113c1a9a4b7c, []int{3}
+	return fileDescriptor_6e82113c1a9a4b7c, []int{4}
 }
 func (m *TallyResult) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -290,13 +328,13 @@ var xxx_messageInfo_TallyResult proto.InternalMessageInfo
 type Vote struct {
 	ProposalId uint64               `protobuf:"varint,1,opt,name=proposal_id,json=proposalId,proto3" json:"proposal_id,omitempty" yaml:"proposal_id"`
 	Voter      string               `protobuf:"bytes,2,opt,name=voter,proto3" json:"voter,omitempty"`
-	Option     VoteOption `protobuf:"varint,3,opt,name=option,proto3,enum=cosmos.gov.v1beta1.VoteOption" json:"option,omitempty"`
+	Options    []WeightedVoteOption `protobuf:"bytes,3,rep,name=options,proto3" json:"options"`
 }
 
 func (m *Vote) Reset()      { *m = Vote{} }
 func (*Vote) ProtoMessage() {}
 func (*Vote) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6e82113c1a9a4b7c, []int{4}
+	return fileDescriptor_6e82113c1a9a4b7c, []int{5}
 }
 func (m *Vote) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -337,7 +375,7 @@ type DepositParams struct {
 func (m *DepositParams) Reset()      { *m = DepositParams{} }
 func (*DepositParams) ProtoMessage() {}
 func (*DepositParams) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6e82113c1a9a4b7c, []int{5}
+	return fileDescriptor_6e82113c1a9a4b7c, []int{6}
 }
 func (m *DepositParams) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -375,7 +413,7 @@ type VotingParams struct {
 func (m *VotingParams) Reset()      { *m = VotingParams{} }
 func (*VotingParams) ProtoMessage() {}
 func (*VotingParams) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6e82113c1a9a4b7c, []int{6}
+	return fileDescriptor_6e82113c1a9a4b7c, []int{7}
 }
 func (m *VotingParams) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -419,7 +457,7 @@ type TallyParams struct {
 func (m *TallyParams) Reset()      { *m = TallyParams{} }
 func (*TallyParams) ProtoMessage() {}
 func (*TallyParams) Descriptor() ([]byte, []int) {
-	return fileDescriptor_6e82113c1a9a4b7c, []int{7}
+	return fileDescriptor_6e82113c1a9a4b7c, []int{8}
 }
 func (m *TallyParams) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -451,6 +489,7 @@ var xxx_messageInfo_TallyParams proto.InternalMessageInfo
 func init() {
 	proto.RegisterEnum("cosmos.gov.v1beta1.VoteOption", VoteOption_name, VoteOption_value)
 	proto.RegisterEnum("cosmos.gov.v1beta1.ProposalStatus", ProposalStatus_name, ProposalStatus_value)
+	proto.RegisterType((*WeightedVoteOption)(nil), "cosmos.gov.v1beta1.WeightedVoteOption")
 	proto.RegisterType((*TextProposal)(nil), "cosmos.gov.v1beta1.TextProposal")
 	proto.RegisterType((*Deposit)(nil), "cosmos.gov.v1beta1.Deposit")
 	proto.RegisterType((*Proposal)(nil), "cosmos.gov.v1beta1.Proposal")
@@ -464,94 +503,97 @@ func init() {
 func init() { proto.RegisterFile("cosmos/gov/v1beta1/gov.proto", fileDescriptor_6e82113c1a9a4b7c) }
 
 var fileDescriptor_6e82113c1a9a4b7c = []byte{
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-	0x99, 0xc9, 0xdf, 0x56, 0x73, 0xfc, 0x5c, 0x98, 0xff, 0xa6, 0x69, 0x35, 0x51, 0x9d, 0xda, 0x99,
+	0x2d, 0x77, 0x7b, 0x69, 0x48, 0xb1, 0x95, 0xc0, 0x04, 0xc0, 0xab, 0x60, 0x79, 0x14, 0x5a, 0xca,
-	0x2d, 0x1c, 0xbe, 0x10, 0x23, 0xcf, 0x5e, 0x88, 0x91, 0x2f, 0x8f, 0xc4, 0xc8, 0xe1, 0x91, 0xc8,
+	0x96, 0xcb, 0x4a, 0x8e, 0x9f, 0x4a, 0xf1, 0xdd, 0x5e, 0x3a, 0x41, 0x31, 0x25, 0xc3, 0x71, 0x50,
-	0x3d, 0x3d, 0x12, 0xb9, 0x3f, 0x8e, 0x44, 0xee, 0xd1, 0x4b, 0x31, 0xf2, 0xf4, 0xa5, 0x18, 0x79,
+	0x0d, 0x5e, 0x07, 0xc9, 0x51, 0x6f, 0x55, 0xf9, 0x48, 0xd9, 0xd2, 0x94, 0x1c, 0x1f, 0x49, 0xc1,
-	0xf6, 0x52, 0x8c, 0xdc, 0xff, 0xe7, 0x85, 0x78, 0xe0, 0xff, 0x29, 0xe4, 0xf7, 0x73, 0x75, 0xde,
+	0x6e, 0x2f, 0x3d, 0x4f, 0xfd, 0x55, 0xf4, 0x09, 0xaa, 0x12, 0x74, 0x26, 0xff, 0x76, 0x36, 0x7f,
-	0xdf, 0x21, 0x6f, 0xfd, 0x1d, 0x00, 0x00, 0xff, 0xff, 0xef, 0x91, 0x01, 0x67, 0x25, 0x0d, 0x00,
+	0x5b, 0xc9, 0xf1, 0xd3, 0x41, 0xfe, 0x6d, 0xc3, 0x6c, 0xa0, 0x1a, 0x2d, 0xa7, 0x5c, 0x38, 0x7c,
-	0x00,
+	0x21, 0x84, 0x9e, 0xbd, 0x10, 0x42, 0x5f, 0x1c, 0x09, 0xa1, 0xc3, 0x23, 0x81, 0x7b, 0x7a, 0x24,
+	0x70, 0x7f, 0x1c, 0x09, 0xdc, 0xa3, 0x97, 0x42, 0xe8, 0xe9, 0x4b, 0x21, 0xf4, 0xec, 0xa5, 0x10,
+	0xba, 0xf7, 0xcf, 0x0b, 0xf1, 0xc0, 0xfb, 0x17, 0xce, 0xeb, 0xe7, 0xdd, 0xa8, 0xb7, 0x43, 0xde,
+	0xfc, 0x3b, 0x00, 0x00, 0xff, 0xff, 0x2e, 0xc3, 0x29, 0x39, 0xdd, 0x0d, 0x00, 0x00,
 }
 
 func (this *TextProposal) Equal(that interface{}) bool {
@@ -667,6 +709,44 @@ func (this *TallyResult) Equal(that interface{}) bool {
 	}
 	return true
 }
+func (m *WeightedVoteOption) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *WeightedVoteOption) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *WeightedVoteOption) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	{
+		size := m.Weight.Size()
+		i -= size
+		if _, err := m.Weight.MarshalTo(dAtA[i:]); err != nil {
+			return 0, err
+		}
+		i = encodeVarintGov(dAtA, i, uint64(size))
+	}
+	i--
+	dAtA[i] = 0x12
+	if m.Option != 0 {
+		i = encodeVarintGov(dAtA, i, uint64(m.Option))
+		i--
+		dAtA[i] = 0x8
+	}
+	return len(dAtA) - i, nil
+}
+
 func (m *TextProposal) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -937,10 +1017,19 @@ func (m *Vote) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
-	if m.Option != 0 {
+	if len(m.Options) > 0 {
-		i = encodeVarintGov(dAtA, i, uint64(m.Option))
+		for iNdEx := len(m.Options) - 1; iNdEx >= 0; iNdEx-- {
+			{
+				size, err := m.Options[iNdEx].MarshalToSizedBuffer(dAtA[:i])
+				if err != nil {
+					return 0, err
+				}
+				i -= size
+				i = encodeVarintGov(dAtA, i, uint64(size))
+			}
 			i--
-		dAtA[i] = 0x18
+			dAtA[i] = 0x1a
+		}
 	}
 	if len(m.Voter) > 0 {
 		i -= len(m.Voter)
@@ -1097,6 +1186,20 @@ func encodeVarintGov(dAtA []byte, offset int, v uint64) int {
 	dAtA[offset] = uint8(v)
 	return base
 }
+func (m *WeightedVoteOption) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.Option != 0 {
+		n += 1 + sovGov(uint64(m.Option))
+	}
+	l = m.Weight.Size()
+	n += 1 + l + sovGov(uint64(l))
+	return n
+}
+
 func (m *TextProposal) Size() (n int) {
 	if m == nil {
 		return 0
@@ -1201,8 +1304,11 @@ func (m *Vote) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovGov(uint64(l))
 	}
-	if m.Option != 0 {
+	if len(m.Options) > 0 {
-		n += 1 + sovGov(uint64(m.Option))
+		for _, e := range m.Options {
+			l = e.Size()
+			n += 1 + l + sovGov(uint64(l))
+		}
 	}
 	return n
 }
@@ -1256,6 +1362,112 @@ func sovGov(x uint64) (n int) {
 func sozGov(x uint64) (n int) {
 	return sovGov(uint64((x << 1) ^ uint64((int64(x) >> 63))))
 }
+func (m *WeightedVoteOption) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowGov
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: WeightedVoteOption: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: WeightedVoteOption: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Option", wireType)
+			}
+			m.Option = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGov
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.Option |= VoteOption(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Weight", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGov
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthGov
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthGov
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := m.Weight.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipGov(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthGov
+			}
+			if (iNdEx + skippy) < 0 {
+				return ErrInvalidLengthGov
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *TextProposal) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
@@ -2107,10 +2319,10 @@ func (m *Vote) Unmarshal(dAtA []byte) error {
 			m.Voter = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
 		case 3:
-			if wireType != 0 {
+			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field Option", wireType)
+				return fmt.Errorf("proto: wrong wireType = %d for field Options", wireType)
 			}
-			m.Option = 0
+			var msglen int
 			for shift := uint(0); ; shift += 7 {
 				if shift >= 64 {
 					return ErrIntOverflowGov
@@ -2120,11 +2332,26 @@ func (m *Vote) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.Option |= VoteOption(b&0x7F) << shift
+				msglen |= int(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
 			}
+			if msglen < 0 {
+				return ErrInvalidLengthGov
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthGov
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Options = append(m.Options, WeightedVoteOption{})
+			if err := m.Options[len(m.Options)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipGov(dAtA[iNdEx:])

x/gov/types/msgs.go

@@ -16,11 +16,12 @@ import (
 const (
 	TypeMsgDeposit        = "deposit"
 	TypeMsgVote           = "vote"
+	TypeMsgWeightedVote   = "weighted_vote"
 	TypeMsgSubmitProposal = "submit_proposal"
 )
 
 var (
-	_, _, _ sdk.Msg                       = &MsgSubmitProposal{}, &MsgDeposit{}, &MsgVote{}
+	_, _, _, _ sdk.Msg                       = &MsgSubmitProposal{}, &MsgDeposit{}, &MsgVote{}, &MsgWeightedVote{}
 	_          types.UnpackInterfacesMessage = &MsgSubmitProposal{}
 )
 
@@ -192,6 +193,7 @@ func (msg MsgVote) ValidateBasic() error {
 	if msg.Voter == "" {
 		return sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, msg.Voter)
 	}
+
 	if !ValidVoteOption(msg.Option) {
 		return sdkerrors.Wrap(ErrInvalidVote, msg.Option.String())
 	}
@@ -216,3 +218,63 @@ func (msg MsgVote) GetSigners() []sdk.AccAddress {
 	voter, _ := sdk.AccAddressFromBech32(msg.Voter)
 	return []sdk.AccAddress{voter}
 }
+
+// NewMsgWeightedVote creates a message to cast a vote on an active proposal
+//nolint:interfacer
+func NewMsgWeightedVote(voter sdk.AccAddress, proposalID uint64, options WeightedVoteOptions) *MsgWeightedVote {
+	return &MsgWeightedVote{proposalID, voter.String(), options}
+}
+
+// Route implements Msg
+func (msg MsgWeightedVote) Route() string { return RouterKey }
+
+// Type implements Msg
+func (msg MsgWeightedVote) Type() string { return TypeMsgWeightedVote }
+
+// ValidateBasic implements Msg
+func (msg MsgWeightedVote) ValidateBasic() error {
+	if msg.Voter == "" {
+		return sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, msg.Voter)
+	}
+
+	if len(msg.Options) == 0 {
+		return sdkerrors.Wrap(sdkerrors.ErrInvalidRequest, WeightedVoteOptions(msg.Options).String())
+	}
+
+	totalWeight := sdk.NewDec(0)
+	usedOptions := make(map[VoteOption]bool)
+	for _, option := range msg.Options {
+		if !ValidWeightedVoteOption(option) {
+			return sdkerrors.Wrap(ErrInvalidVote, option.String())
+		}
+		totalWeight = totalWeight.Add(option.Weight)
+		if usedOptions[option.Option] {
+			return sdkerrors.Wrap(ErrInvalidVote, "Duplicated vote option")
+		}
+		usedOptions[option.Option] = true
+	}
+
+	if totalWeight.GT(sdk.NewDec(1)) {
+		return sdkerrors.Wrap(ErrInvalidVote, "Total weight overflow 1.00")
+	}
+
+	return nil
+}
+
+// String implements the Stringer interface
+func (msg MsgWeightedVote) String() string {
+	out, _ := yaml.Marshal(msg)
+	return string(out)
+}
+
+// GetSignBytes implements Msg
+func (msg MsgWeightedVote) GetSignBytes() []byte {
+	bz := ModuleCdc.MustMarshalJSON(&msg)
+	return sdk.MustSortJSON(bz)
+}
+
+// GetSigners implements Msg
+func (msg MsgWeightedVote) GetSigners() []sdk.AccAddress {
+	voter, _ := sdk.AccAddressFromBech32(msg.Voter)
+	return []sdk.AccAddress{voter}
+}

x/gov/types/msgs_test.go

@@ -92,7 +92,7 @@ func TestMsgDeposit(t *testing.T) {
 	}
 }
 
-// test ValidateBasic for MsgDeposit
+// test ValidateBasic for MsgVote
 func TestMsgVote(t *testing.T) {
 	tests := []struct {
 		proposalID uint64
@@ -118,6 +118,47 @@ func TestMsgVote(t *testing.T) {
 	}
 }
 
+// test ValidateBasic for MsgWeightedVote
+func TestMsgWeightedVote(t *testing.T) {
+	tests := []struct {
+		proposalID uint64
+		voterAddr  sdk.AccAddress
+		options    WeightedVoteOptions
+		expectPass bool
+	}{
+		{0, addrs[0], NewNonSplitVoteOption(OptionYes), true},
+		{0, sdk.AccAddress{}, NewNonSplitVoteOption(OptionYes), false},
+		{0, addrs[0], NewNonSplitVoteOption(OptionNo), true},
+		{0, addrs[0], NewNonSplitVoteOption(OptionNoWithVeto), true},
+		{0, addrs[0], NewNonSplitVoteOption(OptionAbstain), true},
+		{0, addrs[0], WeightedVoteOptions{ // weight sum > 1
+			WeightedVoteOption{Option: OptionYes, Weight: sdk.NewDec(1)},
+			WeightedVoteOption{Option: OptionAbstain, Weight: sdk.NewDec(1)},
+		}, false},
+		{0, addrs[0], WeightedVoteOptions{ // duplicate option
+			WeightedVoteOption{Option: OptionYes, Weight: sdk.NewDecWithPrec(5, 1)},
+			WeightedVoteOption{Option: OptionYes, Weight: sdk.NewDecWithPrec(5, 1)},
+		}, false},
+		{0, addrs[0], WeightedVoteOptions{ // zero weight
+			WeightedVoteOption{Option: OptionYes, Weight: sdk.NewDec(0)},
+		}, false},
+		{0, addrs[0], WeightedVoteOptions{ // negative weight
+			WeightedVoteOption{Option: OptionYes, Weight: sdk.NewDec(-1)},
+		}, false},
+		{0, addrs[0], WeightedVoteOptions{}, false},
+		{0, addrs[0], NewNonSplitVoteOption(VoteOption(0x13)), false},
+	}
+
+	for i, tc := range tests {
+		msg := NewMsgWeightedVote(tc.voterAddr, tc.proposalID, tc.options)
+		if tc.expectPass {
+			require.Nil(t, msg.ValidateBasic(), "test: %v", i)
+		} else {
+			require.NotNil(t, msg.ValidateBasic(), "test: %v", i)
+		}
+	}
+}
+
 // this tests that Amino JSON MsgSubmitProposal.GetSignBytes() still works with Content as Any using the ModuleCdc
 func TestMsgSubmitProposal_GetSignBytes(t *testing.T) {
 	msg, err := NewMsgSubmitProposal(NewTextProposal("test", "abcd"), sdk.NewCoins(), sdk.AccAddress{})

x/gov/types/tally.go

@@ -12,19 +12,19 @@ type ValidatorGovInfo struct {
 	BondedTokens        sdk.Int             // Power of a Validator
 	DelegatorShares     sdk.Dec             // Total outstanding delegator shares
 	DelegatorDeductions sdk.Dec             // Delegator deductions from validator's delegators voting independently
-	Vote                VoteOption     // Vote of the validator
+	Vote                WeightedVoteOptions // Vote of the validator
 }
 
 // NewValidatorGovInfo creates a ValidatorGovInfo instance
 func NewValidatorGovInfo(address sdk.ValAddress, bondedTokens sdk.Int, delegatorShares,
-	delegatorDeductions sdk.Dec, vote VoteOption) ValidatorGovInfo {
+	delegatorDeductions sdk.Dec, options WeightedVoteOptions) ValidatorGovInfo {
 
 	return ValidatorGovInfo{
 		Address:             address,
 		BondedTokens:        bondedTokens,
 		DelegatorShares:     delegatorShares,
 		DelegatorDeductions: delegatorDeductions,
-		Vote:                vote,
+		Vote:                options,
 	}
 }
 

x/gov/types/tx.pb.go

@@ -156,6 +156,45 @@ func (m *MsgVote) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_MsgVote proto.InternalMessageInfo
 
+// MsgVote defines a message to cast a vote.
+type MsgWeightedVote struct {
+	ProposalId uint64               `protobuf:"varint,1,opt,name=proposal_id,json=proposalId,proto3" json:"proposal_id" yaml:"proposal_id"`
+	Voter      string               `protobuf:"bytes,2,opt,name=voter,proto3" json:"voter,omitempty"`
+	Options    []WeightedVoteOption `protobuf:"bytes,3,rep,name=options,proto3" json:"options"`
+}
+
+func (m *MsgWeightedVote) Reset()      { *m = MsgWeightedVote{} }
+func (*MsgWeightedVote) ProtoMessage() {}
+func (*MsgWeightedVote) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3c053992595e3dce, []int{3}
+}
+func (m *MsgWeightedVote) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *MsgWeightedVote) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_MsgWeightedVote.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *MsgWeightedVote) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgWeightedVote.Merge(m, src)
+}
+func (m *MsgWeightedVote) XXX_Size() int {
+	return m.Size()
+}
+func (m *MsgWeightedVote) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgWeightedVote.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MsgWeightedVote proto.InternalMessageInfo
+
 // MsgVoteResponse defines the Msg/Vote response type.
 type MsgVoteResponse struct {
 }
@@ -164,7 +203,7 @@ func (m *MsgVoteResponse) Reset()         { *m = MsgVoteResponse{} }
 func (m *MsgVoteResponse) String() string { return proto.CompactTextString(m) }
 func (*MsgVoteResponse) ProtoMessage()    {}
 func (*MsgVoteResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3c053992595e3dce, []int{3}
+	return fileDescriptor_3c053992595e3dce, []int{4}
 }
 func (m *MsgVoteResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -193,6 +232,43 @@ func (m *MsgVoteResponse) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_MsgVoteResponse proto.InternalMessageInfo
 
+// MsgWeightedVoteResponse defines the MsgWeightedVote response type.
+type MsgWeightedVoteResponse struct {
+}
+
+func (m *MsgWeightedVoteResponse) Reset()         { *m = MsgWeightedVoteResponse{} }
+func (m *MsgWeightedVoteResponse) String() string { return proto.CompactTextString(m) }
+func (*MsgWeightedVoteResponse) ProtoMessage()    {}
+func (*MsgWeightedVoteResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_3c053992595e3dce, []int{5}
+}
+func (m *MsgWeightedVoteResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *MsgWeightedVoteResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_MsgWeightedVoteResponse.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *MsgWeightedVoteResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgWeightedVoteResponse.Merge(m, src)
+}
+func (m *MsgWeightedVoteResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *MsgWeightedVoteResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgWeightedVoteResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MsgWeightedVoteResponse proto.InternalMessageInfo
+
 // MsgDeposit defines a message to submit a deposit to an existing proposal.
 type MsgDeposit struct {
 	ProposalId uint64                                   `protobuf:"varint,1,opt,name=proposal_id,json=proposalId,proto3" json:"proposal_id" yaml:"proposal_id"`
@@ -203,7 +279,7 @@ type MsgDeposit struct {
 func (m *MsgDeposit) Reset()      { *m = MsgDeposit{} }
 func (*MsgDeposit) ProtoMessage() {}
 func (*MsgDeposit) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3c053992595e3dce, []int{4}
+	return fileDescriptor_3c053992595e3dce, []int{6}
 }
 func (m *MsgDeposit) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -240,7 +316,7 @@ func (m *MsgDepositResponse) Reset()         { *m = MsgDepositResponse{} }
 func (m *MsgDepositResponse) String() string { return proto.CompactTextString(m) }
 func (*MsgDepositResponse) ProtoMessage()    {}
 func (*MsgDepositResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_3c053992595e3dce, []int{5}
+	return fileDescriptor_3c053992595e3dce, []int{7}
 }
 func (m *MsgDepositResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -273,7 +349,9 @@ func init() {
 	proto.RegisterType((*MsgSubmitProposal)(nil), "cosmos.gov.v1beta1.MsgSubmitProposal")
 	proto.RegisterType((*MsgSubmitProposalResponse)(nil), "cosmos.gov.v1beta1.MsgSubmitProposalResponse")
 	proto.RegisterType((*MsgVote)(nil), "cosmos.gov.v1beta1.MsgVote")
+	proto.RegisterType((*MsgWeightedVote)(nil), "cosmos.gov.v1beta1.MsgWeightedVote")
 	proto.RegisterType((*MsgVoteResponse)(nil), "cosmos.gov.v1beta1.MsgVoteResponse")
+	proto.RegisterType((*MsgWeightedVoteResponse)(nil), "cosmos.gov.v1beta1.MsgWeightedVoteResponse")
 	proto.RegisterType((*MsgDeposit)(nil), "cosmos.gov.v1beta1.MsgDeposit")
 	proto.RegisterType((*MsgDepositResponse)(nil), "cosmos.gov.v1beta1.MsgDepositResponse")
 }
@@ -281,44 +359,48 @@ func init() {
 func init() { proto.RegisterFile("cosmos/gov/v1beta1/tx.proto", fileDescriptor_3c053992595e3dce) }
 
 var fileDescriptor_3c053992595e3dce = []byte{
-	// 586 bytes of a gzipped FileDescriptorProto
+	// 655 bytes of a gzipped FileDescriptorProto
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-	0xab, 0x77, 0xaf, 0xbc, 0x1e, 0x19, 0xca, 0x87, 0x91, 0xa1, 0xfc, 0x1c, 0x19, 0xca, 0xab, 0x6f,
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+	0xa4, 0xbe, 0xb6, 0x01, 0xd9, 0x48, 0xe6, 0x36, 0x83, 0x06, 0x1f, 0xce, 0x54, 0x65, 0xe9, 0x67,
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+	0xdf, 0x1c, 0x4e, 0x1f, 0xf5, 0x4d, 0x4d, 0xd8, 0x18, 0x4a, 0x5a, 0x2e, 0x24, 0xd1, 0xdd, 0x86,
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+	0x7e, 0x3b, 0x9f, 0xe2, 0x1e, 0x45, 0xa0, 0xdd, 0x80, 0x69, 0x8c, 0x58, 0x80, 0x21, 0xb7, 0x3e,
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+	0x8f, 0x2a, 0xcc, 0x55, 0x29, 0x79, 0xe2, 0x07, 0x64, 0x9b, 0xf9, 0x8d, 0x7f, 0xd0, 0xfb, 0x06,
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+	0x64, 0x44, 0x37, 0x34, 0x9f, 0xe6, 0x0b, 0xb4, 0x3c, 0xaa, 0xf9, 0xe1, 0x86, 0x84, 0x89, 0xca,
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+	0x54, 0xbc, 0x4d, 0x6e, 0x42, 0x1e, 0xe1, 0x65, 0x9e, 0x5b, 0x89, 0x19, 0xc9, 0xd1, 0x5a, 0x05,
-	0x40, 0xfd, 0x4d, 0x06, 0x65, 0x9b, 0x24, 0xc4, 0xfb, 0xa8, 0x70, 0xe6, 0x1b, 0xda, 0x5e, 0x14,
+	0xb8, 0x7c, 0xc2, 0xdd, 0x00, 0xfa, 0xa1, 0x02, 0x54, 0x29, 0x49, 0xf6, 0xe9, 0xbc, 0x4c, 0x2f,
-	0xf4, 0xdc, 0x66, 0x69, 0xb5, 0x7f, 0x1a, 0x9b, 0x2d, 0xe0, 0x7d, 0xb4, 0xc2, 0x96, 0x66, 0xf3,
+	0xc2, 0x8c, 0xdc, 0x6f, 0x4c, 0x8c, 0x1f, 0x27, 0xb4, 0x3a, 0x4c, 0x7b, 0x2d, 0xec, 0x84, 0x4c,
-	0x1c, 0x5a, 0x0a, 0x6a, 0xd7, 0x96, 0x80, 0x33, 0xa5, 0x27, 0x28, 0x27, 0xef, 0x4d, 0x3f, 0x67,
+	0x7a, 0x9f, 0x70, 0x79, 0xae, 0xc5, 0x76, 0xff, 0xea, 0x8a, 0x48, 0xe9, 0x11, 0x93, 0xc9, 0x81,
-	0x5e, 0xe0, 0xda, 0xf5, 0xe5, 0xb8, 0x94, 0x6c, 0x34, 0x0e, 0x27, 0xba, 0x7a, 0x34, 0xd1, 0xd5,
+	0x76, 0x6c, 0x35, 0x99, 0x40, 0xf9, 0x57, 0x0a, 0xd2, 0x55, 0x4a, 0xb4, 0x2d, 0x98, 0x3d, 0xf1,
-	0x1f, 0x13, 0x5d, 0x7d, 0x3f, 0xd5, 0x95, 0xa3, 0xa9, 0xae, 0x7c, 0x9d, 0xea, 0xca, 0xf3, 0xe5,
+	0x54, 0x2c, 0x8d, 0x3a, 0x92, 0x53, 0x17, 0x48, 0x5f, 0x39, 0x53, 0xd9, 0xe0, 0x9e, 0xdd, 0x81,
-	0x17, 0x70, 0xc0, 0x1e, 0x3a, 0x76, 0x0d, 0xde, 0x2a, 0x7b, 0x61, 0x6e, 0xfe, 0x09, 0x00, 0x00,
+	0x29, 0xbe, 0x5f, 0x0b, 0x63, 0x68, 0x31, 0xa8, 0x5f, 0x99, 0x00, 0x0e, 0x94, 0x9e, 0xc1, 0x85,
-	0xff, 0xff, 0x7f, 0x09, 0x3f, 0x57, 0x54, 0x05, 0x00, 0x00,
+	0x3f, 0x36, 0x76, 0x1c, 0x69, 0xb8, 0x48, 0xbf, 0x7a, 0x86, 0xa2, 0xc1, 0x2f, 0x3c, 0x84, 0x4c,
+	0xb2, 0x19, 0xc6, 0x18, 0x9e, 0xc4, 0xf5, 0xe5, 0xc9, 0x78, 0x22, 0x59, 0xa9, 0xec, 0x1d, 0x18,
+	0xea, 0xfe, 0x81, 0xa1, 0x7e, 0x3b, 0x30, 0xd4, 0x37, 0x87, 0x86, 0xb2, 0x7f, 0x68, 0x28, 0x9f,
+	0x0f, 0x0d, 0xe5, 0xe9, 0xe4, 0x23, 0xde, 0xe1, 0xff, 0x18, 0xfc, 0xa0, 0x6b, 0xd3, 0xfc, 0xa9,
+	0xbe, 0xfe, 0x3b, 0x00, 0x00, 0xff, 0xff, 0xc9, 0x6e, 0x76, 0x95, 0x9d, 0x06, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -337,6 +419,8 @@ type MsgClient interface {
 	SubmitProposal(ctx context.Context, in *MsgSubmitProposal, opts ...grpc.CallOption) (*MsgSubmitProposalResponse, error)
 	// Vote defines a method to add a vote on a specific proposal.
 	Vote(ctx context.Context, in *MsgVote, opts ...grpc.CallOption) (*MsgVoteResponse, error)
+	// WeightedVote defines a method to add a weighted vote on a specific proposal.
+	WeightedVote(ctx context.Context, in *MsgWeightedVote, opts ...grpc.CallOption) (*MsgWeightedVoteResponse, error)
 	// Deposit defines a method to add deposit on a specific proposal.
 	Deposit(ctx context.Context, in *MsgDeposit, opts ...grpc.CallOption) (*MsgDepositResponse, error)
 }
@@ -367,6 +451,15 @@ func (c *msgClient) Vote(ctx context.Context, in *MsgVote, opts ...grpc.CallOpti
 	return out, nil
 }
 
+func (c *msgClient) WeightedVote(ctx context.Context, in *MsgWeightedVote, opts ...grpc.CallOption) (*MsgWeightedVoteResponse, error) {
+	out := new(MsgWeightedVoteResponse)
+	err := c.cc.Invoke(ctx, "/cosmos.gov.v1beta1.Msg/WeightedVote", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *msgClient) Deposit(ctx context.Context, in *MsgDeposit, opts ...grpc.CallOption) (*MsgDepositResponse, error) {
 	out := new(MsgDepositResponse)
 	err := c.cc.Invoke(ctx, "/cosmos.gov.v1beta1.Msg/Deposit", in, out, opts...)
@@ -382,6 +475,8 @@ type MsgServer interface {
 	SubmitProposal(context.Context, *MsgSubmitProposal) (*MsgSubmitProposalResponse, error)
 	// Vote defines a method to add a vote on a specific proposal.
 	Vote(context.Context, *MsgVote) (*MsgVoteResponse, error)
+	// WeightedVote defines a method to add a weighted vote on a specific proposal.
+	WeightedVote(context.Context, *MsgWeightedVote) (*MsgWeightedVoteResponse, error)
 	// Deposit defines a method to add deposit on a specific proposal.
 	Deposit(context.Context, *MsgDeposit) (*MsgDepositResponse, error)
 }
@@ -396,6 +491,9 @@ func (*UnimplementedMsgServer) SubmitProposal(ctx context.Context, req *MsgSubmi
 func (*UnimplementedMsgServer) Vote(ctx context.Context, req *MsgVote) (*MsgVoteResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Vote not implemented")
 }
+func (*UnimplementedMsgServer) WeightedVote(ctx context.Context, req *MsgWeightedVote) (*MsgWeightedVoteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method WeightedVote not implemented")
+}
 func (*UnimplementedMsgServer) Deposit(ctx context.Context, req *MsgDeposit) (*MsgDepositResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Deposit not implemented")
 }
@@ -440,6 +538,24 @@ func _Msg_Vote_Handler(srv interface{}, ctx context.Context, dec func(interface{
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Msg_WeightedVote_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MsgWeightedVote)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MsgServer).WeightedVote(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/cosmos.gov.v1beta1.Msg/WeightedVote",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MsgServer).WeightedVote(ctx, req.(*MsgWeightedVote))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Msg_Deposit_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(MsgDeposit)
 	if err := dec(in); err != nil {
@@ -470,6 +586,10 @@ var _Msg_serviceDesc = grpc.ServiceDesc{
 			MethodName: "Vote",
 			Handler:    _Msg_Vote_Handler,
 		},
+		{
+			MethodName: "WeightedVote",
+			Handler:    _Msg_WeightedVote_Handler,
+		},
 		{
 			MethodName: "Deposit",
 			Handler:    _Msg_Deposit_Handler,
@@ -603,6 +723,55 @@ func (m *MsgVote) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *MsgWeightedVote) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MsgWeightedVote) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *MsgWeightedVote) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Options) > 0 {
+		for iNdEx := len(m.Options) - 1; iNdEx >= 0; iNdEx-- {
+			{
+				size, err := m.Options[iNdEx].MarshalToSizedBuffer(dAtA[:i])
+				if err != nil {
+					return 0, err
+				}
+				i -= size
+				i = encodeVarintTx(dAtA, i, uint64(size))
+			}
+			i--
+			dAtA[i] = 0x1a
+		}
+	}
+	if len(m.Voter) > 0 {
+		i -= len(m.Voter)
+		copy(dAtA[i:], m.Voter)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Voter)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if m.ProposalId != 0 {
+		i = encodeVarintTx(dAtA, i, uint64(m.ProposalId))
+		i--
+		dAtA[i] = 0x8
+	}
+	return len(dAtA) - i, nil
+}
+
 func (m *MsgVoteResponse) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -626,6 +795,29 @@ func (m *MsgVoteResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *MsgWeightedVoteResponse) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MsgWeightedVoteResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *MsgWeightedVoteResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	return len(dAtA) - i, nil
+}
+
 func (m *MsgDeposit) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -763,6 +955,28 @@ func (m *MsgVote) Size() (n int) {
 	return n
 }
 
+func (m *MsgWeightedVote) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.ProposalId != 0 {
+		n += 1 + sovTx(uint64(m.ProposalId))
+	}
+	l = len(m.Voter)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	if len(m.Options) > 0 {
+		for _, e := range m.Options {
+			l = e.Size()
+			n += 1 + l + sovTx(uint64(l))
+		}
+	}
+	return n
+}
+
 func (m *MsgVoteResponse) Size() (n int) {
 	if m == nil {
 		return 0
@@ -772,6 +986,15 @@ func (m *MsgVoteResponse) Size() (n int) {
 	return n
 }
 
+func (m *MsgWeightedVoteResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	return n
+}
+
 func (m *MsgDeposit) Size() (n int) {
 	if m == nil {
 		return 0
@@ -1159,6 +1382,144 @@ func (m *MsgVote) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *MsgWeightedVote) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTx
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MsgWeightedVote: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MsgWeightedVote: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ProposalId", wireType)
+			}
+			m.ProposalId = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.ProposalId |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Voter", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Voter = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Options", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Options = append(m.Options, WeightedVoteOption{})
+			if err := m.Options[len(m.Options)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTx(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *MsgVoteResponse) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
@@ -1212,6 +1573,59 @@ func (m *MsgVoteResponse) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *MsgWeightedVoteResponse) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTx
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MsgWeightedVoteResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MsgWeightedVoteResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTx(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *MsgDeposit) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0

x/gov/types/vote.go

@@ -1,7 +1,9 @@
 package types
 
 import (
+	"encoding/json"
 	"fmt"
+	"strings"
 
 	yaml "gopkg.in/yaml.v2"
 
@@ -10,8 +12,8 @@ import (
 
 // NewVote creates a new Vote instance
 //nolint:interfacer
-func NewVote(proposalID uint64, voter sdk.AccAddress, option VoteOption) Vote {
+func NewVote(proposalID uint64, voter sdk.AccAddress, options WeightedVoteOptions) Vote {
-	return Vote{proposalID, voter.String(), option}
+	return Vote{proposalID, voter.String(), options}
 }
 
 func (v Vote) String() string {
@@ -43,7 +45,7 @@ func (v Votes) String() string {
 	}
 	out := fmt.Sprintf("Votes for Proposal %d:", v[0].ProposalId)
 	for _, vot := range v {
-		out += fmt.Sprintf("\n  %s: %s", vot.Voter, vot.Option)
+		out += fmt.Sprintf("\n  %s: %s", vot.Voter, vot.Options)
 	}
 	return out
 }
@@ -53,6 +55,33 @@ func (v Vote) Empty() bool {
 	return v.String() == Vote{}.String()
 }
 
+// NewNonSplitVoteOption creates a single option vote with weight 1
+//nolint:interfacer
+func NewNonSplitVoteOption(option VoteOption) WeightedVoteOptions {
+	return WeightedVoteOptions{{option, sdk.NewDec(1)}}
+}
+
+func (v WeightedVoteOption) String() string {
+	out, _ := json.Marshal(v)
+	return string(out)
+}
+
+// WeightedVoteOptions describes array of WeightedVoteOptions
+type WeightedVoteOptions []WeightedVoteOption
+
+func (v WeightedVoteOptions) String() string {
+	out, _ := json.Marshal(v)
+	return string(out)
+}
+
+// ValidWeightedVoteOption returns true if the sub vote is valid and false otherwise.
+func ValidWeightedVoteOption(option WeightedVoteOption) bool {
+	if !option.Weight.IsPositive() || option.Weight.GT(sdk.NewDec(1)) {
+		return false
+	}
+	return ValidVoteOption(option.Option)
+}
+
 // VoteOptionFromString returns a VoteOption from a string. It returns an error
 // if the string is invalid.
 func VoteOptionFromString(str string) (VoteOption, error) {
@@ -63,6 +92,28 @@ func VoteOptionFromString(str string) (VoteOption, error) {
 	return VoteOption(option), nil
 }
 
+// WeightedVoteOptionsFromString returns weighted vote options from string. It returns an error
+// if the string is invalid.
+func WeightedVoteOptionsFromString(str string) (WeightedVoteOptions, error) {
+	options := WeightedVoteOptions{}
+	for _, option := range strings.Split(str, ",") {
+		fields := strings.Split(option, "=")
+		option, err := VoteOptionFromString(fields[0])
+		if err != nil {
+			return options, err
+		}
+		if len(fields) < 2 {
+			return options, fmt.Errorf("weight field does not exist for %s option", fields[0])
+		}
+		weight, err := sdk.NewDecFromStr(fields[1])
+		if err != nil {
+			return options, err
+		}
+		options = append(options, WeightedVoteOption{option, weight})
+	}
+	return options, nil
+}
+
 // ValidVoteOption returns true if the vote option is valid and false otherwise.
 func ValidVoteOption(option VoteOption) bool {
 	if option == OptionYes ||