1964 General Election - Horncastle
| Year | 1964 |
| General election | 1964 General Election |
| Constituency | Horncastle |
| Turnout | 74.7% |
Results
| Candidate | Party | Votes |
| Maitland, John Francis Whitaker | Conservative | 15,854 |
| Brumby, Robin | Labour | 8,069 |
| Smith, T Frank | Liberal | 8,044 |