UK general election on 6 May 2010 Elections won by Democratic Unionist Party
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 | Majority |
| Belfast North | DODDS, Nigel | 65,504 | 56.5% | 14,812 | 40.0% | -2.9% | 2,224 |
| East Antrim | WILSON, Sammy | 60,204 | 50.7% | 13,993 | 45.9% | -1.0% | 6,770 |
| East Londonderry | CAMPBELL, Gregory | 63,220 | 55.3% | 12,097 | 34.6% | -6.3% | 5,355 |
| Lagan Valley | DONALDSON, Jeffrey | 65,257 | 56.0% | 18,199 | 49.8% | -8.5% | 10,486 |
| North Antrim | PAISLEY, Ian | 73,338 | 57.8% | 19,672 | 46.4% | -10.4% | 12,558 |
| South Antrim | MCCREA, William | 63,054 | 53.9% | 11,536 | 33.9% | -6.4% | 1,183 |
| Strangford | SHANNON, Jim | 60,539 | 53.7% | 14,926 | 45.9% | -8.8% | 5,876 |
| Upper Bann | SIMPSON, David | 74,732 | 55.4% | 14,000 | 33.8% | -3.7% | 3,361 |
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.
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.