diff --git a/consensus/quorum/one-node-staked-vote.go b/consensus/quorum/one-node-staked-vote.go
index e3a45540a..2532f9691 100644
--- a/consensus/quorum/one-node-staked-vote.go
+++ b/consensus/quorum/one-node-staked-vote.go
@@ -98,19 +98,19 @@ func (v *stakedVoteWeight) AddNewVote(
 		additionalVotePower = additionalVotePower.Add(votingPower)
 	}
 
-	tallyQuorum := func() *tallyAndQuorum {
-		switch p {
-		case Prepare:
-			return v.voteTally.Prepare
-		case Commit:
-			return v.voteTally.Commit
-		case ViewChange:
-			return v.voteTally.ViewChange
-		default:
-			// Should not happen
-			return nil
-		}
-	}()
+	var tallyQuorum *tallyAndQuorum
+	switch p {
+	case Prepare:
+		tallyQuorum = v.voteTally.Prepare
+	case Commit:
+		tallyQuorum = v.voteTally.Commit
+	case ViewChange:
+		tallyQuorum = v.voteTally.ViewChange
+	default:
+		// Should not happen
+		return nil, errors.New("stakedVoteWeight not cache this phase")
+	}
+
 	tallyQuorum.tally = tallyQuorum.tally.Add(additionalVotePower)
 
 	t := v.QuorumThreshold()
@@ -163,20 +163,6 @@ func (v *stakedVoteWeight) IsQuorumAchievedByMask(mask *bls_cosi.Mask) bool {
 	return (*currentTotalPower).GT(threshold)
 }
 
-func (v *stakedVoteWeight) currentTotalPower(p Phase) (*numeric.Dec, error) {
-	switch p {
-	case Prepare:
-		return &v.voteTally.Prepare.tally, nil
-	case Commit:
-		return &v.voteTally.Commit.tally, nil
-	case ViewChange:
-		return &v.voteTally.ViewChange.tally, nil
-	default:
-		// Should not happen
-		return nil, errors.New("wrong phase is provided")
-	}
-}
-
 // ComputeTotalPowerByMask computes the total power indicated by bitmap mask
 func (v *stakedVoteWeight) computeTotalPowerByMask(mask *bls_cosi.Mask) *numeric.Dec {
 	currentTotal := numeric.ZeroDec()
diff --git a/hmy/hmy.go b/hmy/hmy.go
index 24f0caa12..097e597d0 100644
--- a/hmy/hmy.go
+++ b/hmy/hmy.go
@@ -120,6 +120,7 @@ type NodeAPI interface {
 	GetConfig() commonRPC.Config
 	ShutDown()
 	GetLastSigningPower() (float64, error)
+	GetLastSigningPower2() (float64, error)
 }
 
 // New creates a new Harmony object (including the
diff --git a/node/api.go b/node/api.go
index ceda96808..ef76079f1 100644
--- a/node/api.go
+++ b/node/api.go
@@ -2,7 +2,9 @@ package node
 
 import (
 	"github.com/harmony-one/harmony/consensus/quorum"
+	"github.com/harmony-one/harmony/consensus/votepower"
 	"github.com/harmony-one/harmony/core/types"
+	"github.com/harmony-one/harmony/crypto/bls"
 	"github.com/harmony-one/harmony/eth/rpc"
 	"github.com/harmony-one/harmony/hmy"
 	"github.com/harmony-one/harmony/internal/tikv"
@@ -183,3 +185,29 @@ func (node *Node) GetLastSigningPower() (float64, error) {
 	round := float64(power.MulInt64(10000).RoundInt64()) / 10000
 	return round, nil
 }
+
+func (node *Node) GetLastSigningPower2() (float64, error) {
+	bc := node.Consensus.Blockchain()
+	cur := bc.CurrentBlock()
+	ss, err := bc.ReadShardState(cur.Epoch())
+	if err != nil {
+		return 0, err
+	}
+	roster, err := votepower.Compute(&ss.Shards[bc.ShardID()], cur.Epoch())
+	if err != nil {
+		return 0, err
+	}
+	blsPubKeys, err := ss.Shards[bc.ShardID()].BLSPublicKeys()
+	if err != nil {
+		return 0, err
+	}
+
+	mask := bls.NewMask(blsPubKeys)
+	err = mask.SetMask(cur.Header().LastCommitBitmap())
+	if err != nil {
+		return 0, err
+	}
+	power := roster.VotePowerByMask(mask)
+	round := float64(power.MulInt64(10000).RoundInt64()) / 10000
+	return round, nil
+}
diff --git a/rpc/private_debug.go b/rpc/private_debug.go
index 921d6645d..97ade82dd 100644
--- a/rpc/private_debug.go
+++ b/rpc/private_debug.go
@@ -65,3 +65,10 @@ func (s *PrivateDebugService) GetLastSigningPower(
 ) (float64, error) {
 	return s.hmy.NodeAPI.GetLastSigningPower()
 }
+
+// GetLastSigningPower2 get last signed power
+func (s *PrivateDebugService) GetLastSigningPower2(
+	ctx context.Context,
+) (float64, error) {
+	return s.hmy.NodeAPI.GetLastSigningPower2()
+}