Results for a UK general election on 7 May 2015 Northern Ireland - Elections won by Sinn Féin
A general election to the 56th Parliament of the United Kingdom with an electorate of 46,354,197, having 30,697,525 valid votes and 102,639 invalid votes.
Read the House of Commons Library briefing.
| Constituency | Candidate | Electorate | Turnout | Votes | Vote share | Vote change | Majority |
| Belfast West | MASKEY, Paul | 62,697 | 56.3% | 19,163 | 54.2% | -16.8% | 12,365 |
| Mid Ulster | MOLLOY, Francie | 67,832 | 60.3% | 19,935 | 48.7% | -3.3% | 13,617 |
| Newry and Armagh | BRADY, Mickey | 77,633 | 64.2% | 20,488 | 41.1% | -0.9% | 4,176 |
| West Tyrone | DOHERTY, Pat | 63,856 | 60.5% | 16,807 | 43.5% | -4.9% | 10,060 |
Turnout as calculated by the House of Commons Library, is the total number of votes cast and not spoiled, divided by the size of the electorate.