Welsh Assembly Election, 1999
First-Past-the-Post results
| Party | Votes | Seats | Loss/Gain | Share of Vote (%) |
| Labour | ? | 27 | N/A | 37.6 |
| Plaid Cymru | ? | 9 | N/A | 28.4 |
| Conservative | ? | 1 | N/A | 15.8 |
| Liberal Democrats | ? | 3 | N/A | 13.5 |
| Others | ? | 0 | N/A | 4.7 |
Additional Members System Results
| Party | Votes | Seats | Loss/Gain | Share of Vote (%) |
| Labour | ? | 1 | N/A | 35.5 |
| Plaid Cymru | ? | 8 | N/A | 30.6 |
| Conservative | ? | 8 | N/A | 6.5 |
| Liberal Democrats | ? | 3 | N/A | 12.5 |
| Others | ? | 0 | N/A | 5.1 |