An election to the 56th Parliament of the United Kingdom for the constituency area of Manchester, Withington, held as part of the general election on 7 May 2015.
Labour gain from Liberal Democrats by Jeff Smith with a majority of 14,873 - 29.8% - on a turnout of 67.4%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| SMITH, Jeff | Lab | 26,843 | 53.7% | 13.3% |
| LEECH, John | LD | 11,970 | 24.0% | -20.7% |
| MANNING, Robert | Con | 4,872 | 9.8% | -1.4% |
| BANNISTER, Lucy | Green | 4,048 | 8.1% | 6.3% |
| DAVIES, Mark | UKIP | 2,172 | 4.3% | 2.8% |
| FARMER, Marcus | Ind | 61 | 0.1% | - |
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 74,102, having a valid vote count of 49,966 and an invalid vote count of 252.
Result declared at 05:28 on 8 May 2015.