October 1974 General Election - South Ayrshire
| Year | 1974 |
| General election | October 1974 General Election |
| Constituency | South Ayrshire |
| Turnout | 77.4% |
Results
| Candidate | Party | Votes |
| Sillars, James | Labour | 22,329 |
| Mullin, Roger | SNP | 7,851 |
| Armstrong, J | Conservative | 7,402 |
| Mabon, R | Liberal | 2,130 |