1966 General Election - Caernarvon
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Caernarvon |
| Turnout | 78.4% |
Results
| Candidate | Party | Votes |
| Roberts, Goronwy | Labour | 17,650 |
| Prys, Roger | Conservative | 6,972 |
| Roberts, Humphrey | Plaid Cymru | 6,834 |
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | Caernarvon |
| Turnout | 78.4% |
| Candidate | Party | Votes |
| Roberts, Goronwy | Labour | 17,650 |
| Prys, Roger | Conservative | 6,972 |
| Roberts, Humphrey | Plaid Cymru | 6,834 |