Results for the UK general election on 7 May 2015 Wales - by party
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 |
| Labour | 40 | 552,473 | 36.9% | 25 |
| Conservative | 40 | 407,813 | 27.2% | 11 |
| Plaid Cymru | 40 | 181,704 | 12.1% | 3 |
| Liberal Democrat | 40 | 97,783 | 6.5% | 1 |
| UK Independence Party | 40 | 204,330 | 13.6% | 0 |
| Green Party | 35 | 38,344 | 2.6% | 0 |
| Independent Save Withybush Save Lives | 1 | 3,729 | 0.2% | 0 |
| Socialist Labour Party | 8 | 3,481 | 0.2% | 0 |
| Trade Unionist and Socialist Coalition | 12 | 1,780 | 0.1% | 0 |
| Official Monster Raving Loony Party | 2 | 466 | 0.0% | 0 |
| People First - Gwerin Gyntaf | 1 | 407 | 0.0% | 0 |
| Christian Party, Proclaiming Christ's Lordship | 1 | 331 | 0.0% | 0 |
| Communist Party of Britain | 2 | 330 | 0.0% | 0 |
| Cannabis Is Safer Than Alcohol | 1 | 238 | 0.0% | 0 |
| The Above and Beyond Party | 1 | 194 | 0.0% | 0 |
| Pirate Party UK | 1 | 106 | 0.0% | 0 |
| English Democrats | 1 | 100 | 0.0% | 0 |
| Alter Change - Politics. Only Different. | 1 | 78 | 0.0% | 0 |
| National Front | 1 | 66 | 0.0% | 0 |
| The Socialist Party of Great Britain | 1 | 49 | 0.0% | 0 |
| The New Society of Worth | 1 | 23 | 0.0% | 0 |