An election to the 56th Parliament of the United Kingdom for the constituency area of Paisley and Renfrewshire South, held as part of the general election on 7 May 2015.
SNP gain from Labour by Mhairi Black with a majority of 5,684 - 12.3% - on a turnout of 75.4%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| BLACK, Mhairi | SNP | 23,548 | 50.9% | 32.9% |
| ALEXANDER, Douglas | Lab | 17,864 | 38.6% | -21.0% |
| GALLOWAY, Fraser | Con | 3,526 | 7.6% | -2.3% |
| MCCARTIN, Eileen | LD | 1,010 | 2.2% | -7.3% |
| WEBSTER, Sandra | SSP | 278 | 0.6% | -0.3% |
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 61,281, having a valid vote count of 46,226 and an invalid vote count of 69.
Result declared at 02:22 on 8 May 2015.