Donegal South–West: 1987 general election
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| Seat | Party | Candidate | Share | Count 1 | Count 2 | Count 3 | Count 4 | Count 5 |
| 1 |  | 30.7% | 9698 | |||||||||
| 2 | | 27.5% | 8686 | |||||||||
| 3 |  | 20.1% | 6331 | 6811 (480) | 7008 (197) | 7158 (150) | 9821 (2663) | |||||
 | 8.0% | 2512 | 3030 (518) | 3465 (435) | 4085 (620) | 4344 (259) | ||||||
| 9.7% | 3072 | 3452 (380) | 3505 (53) | 3614 (109) | |||||||
 | 4.0% | 1276 | 1702 (426) | 1809 (107) | ||||||||
| Valid: 31575 |