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 |