1979
| Nott | Conservative | 22,352 | 54.0% |
| Evans | Labour | 8,636 | 20.9% |
| Cotton | Liberal | 8,299 | 20.1% |
| Murley | Mebyon Kernow | 1,662 | 4.0% |
| Hoptrough | Ecology | 427 | 1.0% |
| turnout | 77.0% |
1983
| Harris | Conservative | 24,297 | 51.4% |
| Carter | SDP | 16,438 | 34.8% |
| Crowley | Labour | 5,310 | 11.2% |
| Prior | Mebyon Kernow | 569 | 1.2% |
| Hoptrough | Ecology | 439 | 0.9% |
| Horner | Independent | 219 | 0.5% |
| turnout | 73.9% |
1987
| Harris | Conservative | 25,174 | 48.4% |
| Carter | SDP | 17,619 | 33.8% |
| Hope | Labour | 9,275 | 17.8% |
| turnout | 77.2% |
1992
| Harris | Conservative | 24,528 | 42.9% |
| George | Liberal Democrat | 22,883 | 40.1% |
| Warran | Labour | 9,144 | 16.0% |
| Stephens | Liberal | 577 | 1.0% |
| turnout | 80.3% |
Cornish studies resources 