Gareth Thomas Elections contested
Parliament Member page for Gareth Thomas
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 | Position |
| 8 June 2017 | Clwyd West | General election | Lab | 16,104 | 39.6% | 2nd |
| 7 May 2015 | Clwyd West | General election | Lab | 9,733 | 25.6% | 2nd |