Keir Mather Elections won
Parliament Member page for Keir Mather
Elections listed as contested and won are those forming part of any general election or by-election contested since since the 2010 general election. A person may have contested an election outside of this grouping.
| Election | Constituency | Election type | Party | Vote count | Vote share | Majority |
| 20 July 2023 | Selby and Ainsty | By-election | Lab | 16,456 | 46.0% | 4,161 |
Maiden speech
Keir Mather's maiden speech was made on 16 October 2023, as the member for Selby and Ainsty. The speech took place in the 3rd session of the 58th Parliament.