1964 General Election - Monmouth
| Year | 1964 |
| General election | 1964 General Election |
| Constituency | Monmouth |
| Turnout | 84.0% |
Results
| Candidate | Party | Votes |
| Thorneycroft, George Edward Peter | Conservative | 22,365 |
| Kerr, A Calvin | Labour | 21,921 |
| Davies, D Hywell | Liberal | 6,764 |