An election to the 56th Parliament of the United Kingdom for the constituency area of Plymouth, Sutton and Devonport, held as part of the general election on 7 May 2015.
Conservative hold by Oliver Colvile with a majority of 523 - 1.1% - on a turnout of 65.5%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| COLVILE, Oliver | Con | 18,120 | 37.8% | 3.5% |
| POLLARD, Luke | Lab / Co-op | 17,597 | 36.7% | 5.0% |
| KETTLE, Roy | UKIP | 6,731 | 14.0% | 7.5% |
| BROWN, Libby | Green | 3,401 | 7.1% | 5.0% |
| REED, Graham | LD | 2,008 | 4.2% | -20.5% |
| ROSSINGTON, Laura-Jane | Comm | 106 | 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 73,274, having a valid vote count of 47,963 and an invalid vote count of 157.
Result declared at 07:31 on 8 May 2015.