1945 General Election - Thornbury
| Year | 1945 |
| General election | 1945 General Election |
| Constituency | Thornbury |
| Turnout | 76.4% |
Results
| Candidate | Party | Votes |
| Alpass, Joseph Herbert | Labour | 28,364 |
| Gunston, Derrick Wellesley | Conservative | 18,927 |
| Brighton, Ronald | Liberal | 10,262 |