| Year: | 1987 |
|---|---|
| General election: | 1987 General Election |
| Constituency: | Monmouth |
| Turnout: | 80.6% |
Results
| Candidate | Party | Votes |
| Thomas, Sir John | Conservative | 22387 |
| Gass, Katrina | Labour | 13037 |
| Lindley, Clive | Social Democratic | 11313 |
| Meredudd, Sian | Plaid Cymru | 363 |