An election to the 56th Parliament of the United Kingdom for the constituency area of Vale Of Glamorgan, held as part of the general election on 7 May 2015.
Conservative hold by Alun Cairns with a majority of 6,880 - 13.4% - on a turnout of 70.5%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| CAIRNS, Alun | Con | 23,607 | 46.0% | 4.2% |
| ELMORE, Chris | Lab | 16,727 | 32.6% | -0.3% |
| MAHONEY, Kevin | UKIP | 5,489 | 10.7% | 7.6% |
| JOHNSON, Ian | PC | 2,869 | 5.6% | 0.1% |
| MORGAN, David | LD | 1,309 | 2.6% | -12.7% |
| ARMSTRONG, Alan | Green | 1,054 | 2.1% | 1.1% |
| REED, Steve | CSA | 238 | 0.5% | - |
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.
An electorate of 72,794, having a valid vote count of 51,293 and an invalid vote count of 86.
Result declared at 05:33 on 8 May 2015.