Gareth Thomas Elections contested
Parliament Member page for Gareth Thomas
Elections listed as contested and won are those forming part of the general elections in 2010, 2015, 2017, 2019 or 2024 and any by-election contested during the 58th Parliament. A person may have contested an election outside 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 |