Results for a UK general election on 6 May 2010 Elections contested by Sinn Féin
A general election to the 55th Parliament of the United Kingdom with an electorate of 45,597,461, having 29,687,604 valid votes and 81,879 invalid votes.
Read the House of Commons Library briefing.
| Constituency | Candidate | Electorate | Turnout | Votes | Vote share | Vote change | Position |
| Belfast West | ADAMS, Gerry | 59,522 | 54.0% | 22,840 | 71.1% | 2.5% | 1st |
| Fermanagh and South Tyrone | GILDERNEW, Michelle | 67,908 | 68.9% | 21,304 | 45.5% | 7.3% | 1st |
| Mid Ulster | MCGUINNESS, Martin | 64,594 | 63.2% | 21,239 | 52.0% | 4.4% | 1st |
| Newry and Armagh | MURPHY, Conor | 74,308 | 60.4% | 18,857 | 42.0% | 0.6% | 1st |
| West Tyrone | DOHERTY, Pat | 61,148 | 61.0% | 18,050 | 48.4% | 9.5% | 1st |
| Belfast North | KELLY, Gerry | 65,504 | 56.5% | 12,588 | 34.0% | 7.1% | 2nd |
| East Londonderry | O HOISIN, Cathal | 63,220 | 55.3% | 6,742 | 19.3% | 1.9% | 2nd |
| Foyle | ANDERSON, Martina | 65,843 | 57.5% | 12,098 | 31.9% | -1.4% | 2nd |
| South Down | RUANE, Caitriona | 70,784 | 60.2% | 12,236 | 28.7% | 1.7% | 2nd |
| North Antrim | MCKAY, Daithi | 73,338 | 57.8% | 5,265 | 12.4% | -1.8% | 3rd |
| South Antrim | MCLAUGHLIN, Mitchel | 63,054 | 53.9% | 4,729 | 13.9% | 3.2% | 3rd |
| Upper Bann | O'DOWD, John | 74,732 | 55.4% | 10,237 | 24.7% | 3.8% | 3rd |
| East Antrim | MCMULLAN, Oliver | 60,204 | 50.7% | 2,064 | 6.8% | 1.4% | 4th |
| Belfast East | O'DONNGHAILE, Niall | 59,007 | 58.4% | 817 | 2.4% | -0.1% | 5th |
| Lagan Valley | BUTLER, Paul | 65,257 | 56.0% | 1,465 | 4.0% | -0.3% | 6th |
| Strangford | COOGAN, Michael | 60,539 | 53.7% | 1,161 | 3.6% | -0.1% | 6th |
| North Down | PARKER, Vincent | 60,698 | 55.2% | 250 | 0.7% | 0.1% | 7th |
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.
Under section 13(b) of the Representation of the People Act 1985, a candidate gaining 5% or less of the vote share will forfeit their deposit.
This was the first election on a new set of constituency boundaries in England, Northern Ireland and Wales. The vote share calculations in those countries are based on notional results, which estimate the outcome of the previous election had it been contested on the new boundaries.