1987 General Election - Cynon Valley
| Year | 1987 |
| General election | 1987 General Election |
| Constituency | Cynon Valley |
| Turnout | 76.7% |
Results
| Candidate | Party | Votes |
| Clwyd, Ann | Labour | 26,222 |
| Butler, Keith | Social Democratic | 4,651 |
| Bishop, Mark | Conservative | 4,638 |
| Richards, Dorothy | Plaid Cymru | 2,549 |