By-Election Location
By winning party colour
Voting Breakdown
Percentage based
Gains and Losses
Percentage based
Plaid 338 (57.9%; +22.8)
Llais Gywnedd 246 (42.1%; -6.2)
[Green 0 (-16.6%)Plaid Cymru gain from Llais Gwynedd
Majority 92
Turnout Unknown
Percentage change is since 2008