1979 General Election - Monmouth
| Year | 1979 |
| General election | 1979 General Election |
| Constituency | Monmouth |
| Turnout | 83.0% |
Results
| Candidate | Party | Votes |
| Thomas, John | Conservative | 33,547 |
| Steel, TM | Labour | 23,785 |
| Hando, David | Liberal | 8,494 |
| Williams, G | Plaid Cymru | 641 |