An election to the 56th Parliament of the United Kingdom for the constituency area of Gower, held as part of the general election on 7 May 2015.
Conservative gain from Labour by Byron Davies with a majority of 27 - 0.1% - on a turnout of 69.2%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| DAVIES, Byron | Con | 15,862 | 37.1% | 5.1% |
| EVANS, Liz | Lab | 15,835 | 37.0% | -1.4% |
| BECKETT, Colin | UKIP | 4,773 | 11.2% | 9.6% |
| THOMAS, Darren | PC | 3,051 | 7.1% | 0.5% |
| SHEEHAN, Mike | LD | 1,552 | 3.6% | -15.4% |
| MARSHALL, Julia | Green | 1,161 | 2.7% | - |
| BARON BARNES VON CLAPTRAP, David | MRLP | 253 | 0.6% | - |
| ROBERTS, Steve | Ind | 168 | 0.4% | - |
| EVANS, Mark | TUSC | 103 | 0.2% | - |
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 61,820, having a valid vote count of 42,758 and an invalid vote count of 57.
Result declared at 05:12 on 8 May 2015.