| Votes | Seats | Seat Changes | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Party | Then | Now | Change | Then | Now | Gains | Losses | Net | |
| Labour | 36.17% | 30.00% | -6.17% | 47 | 36 | 0 | -11 | -11 | |
| Plaid Cymru | 20.72% | 21.00% | +0.28% | 21 | 23 | +3 | -1 | +2 | |
| Reform UK | 1.04% | 20.00% | +18.96% | 0 | 18 | +18 | 0 | +18 | |
| Conservative | 25.08% | 17.00% | -8.08% | 28 | 18 | 0 | -10 | -10 | |
| Liberal Democrat | 4.34% | 6.00% | +1.66% | 0 | 1 | +1 | 0 | +1 | |
| Green | 4.39% | 5.00% | +0.61% | 0 | 0 | 0 | 0 | 0 | |
| Abolish Welsh Assembly | 3.73% | 3.73% | 0.00% | 0 | 0 | 0 | 0 | 0 | |