1966 General Election - Monmouth
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Monmouth |
| Turnout | 84.3% |
Results
| Candidate | Party | Votes |
| Anderson, Donald | Labour | 28,619 |
| Thorneycroft, George | Conservative | 25,654 |
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Monmouth |
| Turnout | 84.3% |
| Candidate | Party | Votes |
| Anderson, Donald | Labour | 28,619 |
| Thorneycroft, George | Conservative | 25,654 |