An election to the 57th Parliament of the United Kingdom for the constituency area of Warrington South, held as part of the general election on 8 June 2017.
Labour gain from Conservatives by Faisal Rashid with a majority of 2,549 - 4.1% - on a turnout of 72.4%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| RASHID, Faisal | Lab | 29,994 | 48.4% | 9.3% |
| MOWAT, David | Con | 27,445 | 44.3% | 0.6% |
| BARR, Bob | LD | 3,339 | 5.4% | -0.2% |
| BOULTON, John | Ind | 1,217 | 2.0% | - |
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 85,617, having a valid vote count of 61,995 and an invalid vote count of 120.
Result declared at 04:03 on 9 June 2017.