Nia Griffith Elections contested
Parliament Member page for Nia Griffith
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 |
| 4 July 2024 | Llanelli | General election | Lab | - | - | 1st |
| 12 December 2019 | Llanelli | General election | Lab | 16,125 | 42.2% | 1st |
| 8 June 2017 | Llanelli | General election | Lab | 21,568 | 53.5% | 1st |
| 7 May 2015 | Llanelli | General election | Lab | 15,948 | 41.3% | 1st |
| 6 May 2010 | Llanelli | General election | Lab | 15,916 | 42.5% | 1st |