diff --git a/planetmint/lib.py b/planetmint/lib.py
index 2e59cca..b9d192a 100644
--- a/planetmint/lib.py
+++ b/planetmint/lib.py
@@ -670,7 +670,7 @@ class Planetmint(object):
             raise InvalidProposer("Public key is not a part of the validator set")
 
         # NOTE: Check if all validators have been assigned votes equal to their voting power
-        if not transaction.is_same_topology(current_validators, transaction.outputs):
+        if not self.is_same_topology(current_validators, transaction.outputs):
             raise UnequalValidatorSet("Validator set much be exactly same to the outputs of election")
 
         if transaction.operation == VALIDATOR_ELECTION:
@@ -778,4 +778,18 @@ class Planetmint(object):
         status += f"\nvalidators={json.dumps(validators, indent=4)}"
         return status
 
+    def is_same_topology(cls, current_topology, election_topology):
+        voters = {}
+        for voter in election_topology:
+            if len(voter.public_keys) > 1:
+                return False
+
+            [public_key] = voter.public_keys
+            voting_power = voter.amount
+            voters[public_key] = voting_power
+
+        # Check whether the voters and their votes is same to that of the
+        # validators and their voting power in the network
+        return current_topology == voters
+
 Block = namedtuple("Block", ("app_hash", "height", "transactions"))
diff --git a/planetmint/transactions/types/elections/election.py b/planetmint/transactions/types/elections/election.py
index 17b0fba..137a7e7 100644
--- a/planetmint/transactions/types/elections/election.py
+++ b/planetmint/transactions/types/elections/election.py
@@ -34,21 +34,6 @@ class Election(Transaction):
     # Vote ratio to approve an election
     ELECTION_THRESHOLD = 2 / 3
 
-    @classmethod
-    def is_same_topology(cls, current_topology, election_topology): # TODO: move somewhere else
-        voters = {}
-        for voter in election_topology:
-            if len(voter.public_keys) > 1:
-                return False
-
-            [public_key] = voter.public_keys
-            voting_power = voter.amount
-            voters[public_key] = voting_power
-
-        # Check whether the voters and their votes is same to that of the
-        # validators and their voting power in the network
-        return current_topology == voters
-
     @classmethod
     def validate_election(self, tx_signers, recipients, asset, metadata):
         if not isinstance(tx_signers, list):