1966 General Election - Horncastle
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Horncastle |
| Turnout | 75.9% |
Results
| Candidate | Party | Votes |
| Tapsell, Peter | Conservative | 15,090 |
| Sackur, Robert | Labour | 9,715 |
| Smith, Frank | Liberal | 7,552 |
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Horncastle |
| Turnout | 75.9% |
| Candidate | Party | Votes |
| Tapsell, Peter | Conservative | 15,090 |
| Sackur, Robert | Labour | 9,715 |
| Smith, Frank | Liberal | 7,552 |