By-Election Location
By winning party colour
Voting Breakdown
Percentage based
Gains and Losses
Percentage based
Plaid Cymru: 551 (48.5%, +13.8%)
Reform UK: 446 (39.3%, new)
Conservative: 93 (8.2%, -14.1%)
Green Party: 45 (4%, new)
Plaid Cymru HOLD
By Charles Quinn - July 30, 2026
By-Election Location
By winning party colour
Voting Breakdown
Percentage based
Gains and Losses
Percentage based
Plaid Cymru: 551 (48.5%, +13.8%)
Reform UK: 446 (39.3%, new)
Conservative: 93 (8.2%, -14.1%)
Green Party: 45 (4%, new)
Plaid Cymru HOLD