Here are the most recent election results for the Sir Gaerfyrddin constituency.
Note: Smaller parties may be omitted. The candidate with the largest vote who does not belong to one of the main parties is listed as 'Minor'. Votes listed for 'Other' are calculated by taking the votes from the main parties and 'Minor' away from the total votes cast.
View full Senedd Election 2026 results.
| Party | Votes | Percentage | Change | Seats | |
|---|---|---|---|---|---|
| Plaid Cymru | 36,160 | 43.06% | +11.98% | 3 | |
| Reform UK | 27,542 | 32.79% | +31.67% | 3 | |
| Labour | 6,458 | 7.69% | -25.56% | 0 | |
| Conservative | 5,853 | 6.97% | -14.99% | 0 | |
| Green | 3,832 | 4.56% | +0.99% | 0 | |
| Liberal Democrat | 1,662 | 1.98% | -0.17% | 0 | |
| Minor | 1,298 | 1.55% | N/A | 0 | |
| Others | 1,178 | 1.40% | N/A | 0 | |
| Turnout | 83,983 | 55.81% | +3.82% | - | |
| Electorate | 150,481 | - | - | - | |
View full Senedd Election 2021 (New Boundaries (Our Estimate)) results.
| Party | Votes | Percentage | Change | Seats | |
|---|---|---|---|---|---|
| Labour | 26,463 | 33.25% | N/A | 3 | |
| Plaid Cymru | 24,733 | 31.08% | N/A | 2 | |
| Conservative | 17,478 | 21.96% | N/A | 1 | |
| Green | 2,844 | 3.57% | N/A | 0 | |
| Abolish Welsh Assembly | 2,162 | 2.72% | N/A | 0 | |
| Liberal Democrat | 1,709 | 2.15% | N/A | 0 | |
| UKIP | 1,376 | 1.73% | N/A | 0 | |
| Reform UK | 892 | 1.12% | N/A | 0 | |
| Others | 1,925 | 2.42% | N/A | 0 | |
| Turnout | 79,582 | 51.99% | N/A | - | |
| Electorate | 153,069 | - | - | - | |