1966 General Election - Merthyr Tydfil
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Merthyr Tydfil |
| Turnout | 73.9% |
Results
| Candidate | Party | Votes |
| Davies, Stephen | Labour | 21,737 |
| Preece, Gerald | Conservative | 4,082 |
| Stephens, Meic | Plaid Cymru | 3,361 |