Northern Ireland, 2015 vs 2017: seat-by-seat change
Every constituency in Northern Ireland compared between the 2015 and 2017 general elections: which seats changed hands and how far each swung.
| Constituency | 2015 | 2017 | Majority | Con–Lab swing |
|---|---|---|---|---|
| Belfast East | DUP | DUP | 19.8% | +0.9 |
| Belfast North | DUP | DUP | 4.5% | 0 |
| Belfast South | SDLP | DUP gain | 4.6% | +0.5 |
| Belfast West | SF | SF | 53.3% | +0.1 |
| East Antrim | DUP | DUP | 41.8% | −0.4 |
| East Londonderry | DUP | DUP | 21.6% | +0.2 |
| Fermanagh and South Tyrone | UUP | SF gain | 1.6% | 0 |
| Foyle | SDLP | SF gain | 0.4% | +0.2 |
| Lagan Valley | DUP | DUP | 42.8% | +0.3 |
| Mid Ulster | SF | SF | 27.6% | +0.1 |
| Newry and Armagh | SF | SF | 23.3% | +0.2 |
| North Antrim | DUP | DUP | 42.6% | +0.4 |
| North Down | Ind | Ind | 3.1% | +1.0 |
| South Antrim | UUP | DUP gain | 7.4% | +0.6 |
| South Down | SDLP | SF gain | 4.8% | +0.4 |
| Strangford | DUP | DUP | 47.3% | +2.5 |
| Upper Bann | DUP | DUP | 15.6% | +0.2 |
| West Tyrone | SF | SF | 23.8% | +0.2 |
Official results House of Commons Library and UK Parliament election results data. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. How we use this data