1966 General Election - Rhondda West
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Rhondda West |
| Turnout | 80.3% |
Results
| Candidate | Party | Votes |
| Thomas, Iorwerth | Labour | 19,060 |
| Davies, Henry | Plaid Cymru | 2,172 |
| Sandford-Hill, Bryan | Conservative | 1,955 |
| True, Arthur | Communist | 1,853 |