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.
By area - By majority - By vote share of winning candidate - By turnout - By declaration time - By party - Non-party candidates
Registered political parties nominating candidates standing in the general election on 7 May 2015. This list does not include candidates standing as independents or the candidate standing as House of Commons Speaker.
| Party | Constituencies contested | Votes | Vote share | Constituencies won |
| Scottish National Party | 59 | 1,454,436 | 50.0% | 56 |
| Labour | 59 | 707,147 | 24.3% | 1 |
| Conservative | 59 | 434,097 | 14.9% | 1 |
| Liberal Democrat | 59 | 219,675 | 7.6% | 1 |
| UK Independence Party | 41 | 47,078 | 1.6% | 0 |
| Green Party | 31 | 39,205 | 1.3% | 0 |
| Cannabis Is Safer Than Alcohol | 8 | 1,759 | 0.1% | 0 |
| Trade Unionist and Socialist Coalition | 9 | 1,720 | 0.1% | 0 |
| Christian Party, Proclaiming Christ's Lordship | 2 | 1,467 | 0.1% | 0 |
| Scottish Socialist Party | 4 | 875 | 0.0% | 0 |
| National Front | 2 | 289 | 0.0% | 0 |
| Communist Party of Britain | 1 | 136 | 0.0% | 0 |
| Left Unity | 1 | 122 | 0.0% | 0 |
| Socialist Equality Party | 1 | 58 | 0.0% | 0 |