Gareth Johnson Elections contested
Parliament Member page for Gareth Johnson
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 | Dartford | General election | Con | 14,200 | 31.9% | 2nd |
| 12 December 2019 | Dartford | General election | Con | 34,006 | 62.9% | 1st |
| 8 June 2017 | Dartford | General election | Con | 31,210 | 57.6% | 1st |
| 7 May 2015 | Dartford | General election | Con | 25,670 | 49.0% | 1st |
| 6 May 2010 | Dartford | General election | Con | 24,428 | 48.8% | 1st |