1945 General Election - Rhondda East
| Year | 1945 |
| General election | 1945 General Election |
| Constituency | Rhondda East |
| Turnout | 82.8% |
Results
| Candidate | Party | Votes |
| Mainwaring, William Henry | Labour | 16,733 |
| Pollitt, Harry | Communist | 15,761 |
| Davies, James Kitchener | Plaid Cymru | 2,123 |