By-Election Location
By winning party colour
Voting Breakdown
Percentage based
Gains and Losses
Percentage based
Plaid Cymru – 480 [65.8%] 
Labour – 148 [20.3%] 
Lib Dem – 102 [14%]
Plaid Cymru HOLD
By Abi Bell - March 18, 2021
By-Election Location
By winning party colour
Voting Breakdown
Percentage based
Gains and Losses
Percentage based
Plaid Cymru – 480 [65.8%] 
Labour – 148 [20.3%] 
Lib Dem – 102 [14%]
Plaid Cymru HOLD