1966 General Election - South Down
| Year | 1966 |
| General election | 1966 General Election |
| Constituency | South Down |
| Turnout | 65.8% |
Results
| Candidate | Party | Votes |
| Orr, Lawrence | UUP | 32,876 |
| Quinn, John | Ulster Liberal | 9,586 |
| Mussen, George | Independent Republican | 8,917 |