diff --git a/eth/client.go b/eth/client.go
index 3c06a533b9..98bc467d4c 100644
--- a/eth/client.go
+++ b/eth/client.go
@@ -114,8 +114,8 @@ type LivepeerEthClient interface {
 
 	// Governance
 	Vote(ethcommon.Address, *big.Int) (*types.Transaction, error)
-	ProposalVote(*big.Int, uint8) (*types.Transaction, error)
-	ProposalVoteWithReason(*big.Int, uint8, string) (*types.Transaction, error)
+	ProposalVote(*big.Int, *big.Int) (*types.Transaction, error)
+	ProposalVoteWithReason(*big.Int, *big.Int, string) (*types.Transaction, error)
 
 	// Helpers
 	ContractAddresses() map[string]ethcommon.Address
@@ -133,16 +133,16 @@ type client struct {
 	transOpts      bind.TransactOpts
 	transOptsMu    sync.RWMutex
 
-	controllerAddr      ethcommon.Address
-	tokenAddr           ethcommon.Address
-	serviceRegistryAddr ethcommon.Address
-	bondingManagerAddr  ethcommon.Address
-	ticketBrokerAddr    ethcommon.Address
-	roundsManagerAddr   ethcommon.Address
-	minterAddr          ethcommon.Address
-	verifierAddr        ethcommon.Address
-	faucetAddr          ethcommon.Address
-	governorAddr        ethcommon.Address
+	controllerAddr       ethcommon.Address
+	tokenAddr            ethcommon.Address
+	serviceRegistryAddr  ethcommon.Address
+	bondingManagerAddr   ethcommon.Address
+	ticketBrokerAddr     ethcommon.Address
+	roundsManagerAddr    ethcommon.Address
+	minterAddr           ethcommon.Address
+	verifierAddr         ethcommon.Address
+	faucetAddr           ethcommon.Address
+	livepeerGovernorAddr ethcommon.Address
 
 	// Contracts
 	controller          *contracts.Controller
@@ -330,22 +330,22 @@ func (c *client) setContracts(opts *bind.TransactOpts) error {
 
 	glog.V(common.SHORT).Infof("LivepeerTokenFaucet: %v", c.faucetAddr.Hex())
 
-	governorAddr, err := c.GetContract(crypto.Keccak256Hash([]byte("LivepeerGovernor")))
+	livepeerGovernorAddr, err := c.GetContract(crypto.Keccak256Hash([]byte("LivepeerGovernor")))
 	if err != nil {
 		glog.Errorf("Error getting Governor address: %v", err)
 		return err
 	}
 
-	c.governorAddr = governorAddr
+	c.livepeerGovernorAddr = livepeerGovernorAddr
 
-	governor, err := contracts.NewGovernor(governorAddr, c.backend)
+	governor, err := contracts.NewGovernor(livepeerGovernorAddr, c.backend)
 	if err != nil {
 		glog.Errorf("Error creating Governor binding: %v", err)
 		return err
 	}
 	c.livepeerGovernor = governor
 
-	glog.V(common.SHORT).Infof("LivepeerGovernor: %v", c.governorAddr.Hex())
+	glog.V(common.SHORT).Infof("LivepeerGovernor: %v", c.livepeerGovernorAddr.Hex())
 
 	return nil
 }
@@ -1012,8 +1012,8 @@ func (c *client) Vote(pollAddr ethcommon.Address, choiceID *big.Int) (*types.Tra
 	return poll.Vote(opts, choiceID)
 }
 
-func (c *client) ProposalVote(proposalId *big.Int, support uint8) (*types.Transaction, error) {
-	return c.livepeerGovernor.CastVote(c.transactOpts(), proposalId, support)
+func (c *client) ProposalVote(proposalId *big.Int, support *big.Int) (*types.Transaction, error) {
+	return c.livepeerGovernor.CastVote(c.transactOpts(), proposalId, uint8(support))
 }
 
 func (c *client) ProposalVoteWithReason(proposalId *big.Int, support uint8, reason string) (*types.Transaction, error) {
diff --git a/server/handlers.go b/server/handlers.go
index 1733fc00b2..99a1ea47c1 100644
--- a/server/handlers.go
+++ b/server/handlers.go
@@ -1291,12 +1291,12 @@ func proposalVoteHandler(client eth.LivepeerEthClient) http.Handler {
 		}
 
 		supportStr := r.FormValue("support")
-		support, err := strconv.Atoi(supportStr)
-		if err != nil {
+		support, ok := new(big.Int).SetString(supportStr, 10)
+		if !ok {
 			respond500(w, "support is not a valid integer value")
 			return
 		}
-		if !types.ProposalVoteChoice(support).IsValid() {
+		if !types.ProposalVoteChoice(int(support.Int64())).IsValid() {
 			respond500(w, "invalid support")
 			return
 		}
@@ -1305,10 +1305,11 @@ func proposalVoteHandler(client eth.LivepeerEthClient) http.Handler {
 
 		// submit tx
 		var tx *ethtypes.Transaction
+		var err error
 		if reason != "" {
-			tx, err = client.ProposalVoteWithReason(proposalID, uint8(support), reason)
+			tx, err = client.ProposalVoteWithReason(proposalID, uint8(support.Uint64()), reason)
 		} else {
-			tx, err = client.ProposalVote(proposalID, uint8(support))
+			tx, err = client.ProposalVote(proposalID, uint8(support.Uint64()))
 		}
 		if err != nil {
 			respond500(w, fmt.Sprintf("unable to submit proposal vote transaction err=%q", err))