An election to the 58th Parliament of the United Kingdom for the constituency area of Dartford, held as part of the general election on 12 December 2019.
Conservative hold by Gareth Johnson with a majority of 19,160 - 35.5% - on a turnout of 65.7%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| JOHNSON, Gareth | Con | 34,006 | 62.9% | 5.4% |
| GOSINE, Sacha | Lab | 14,846 | 27.5% | -5.8% |
| MARSH, Kyle | LD | 3,736 | 6.9% | 4.3% |
| LINDOP, Mark | Green | 1,435 | 2.7% | 1.2% |
Under section 13(b) of the Representation of the People Act 1985, a candidate gaining 5% or less of the vote share will forfeit their deposit.
An electorate of 82,209, having a valid vote count of 54,023 and an invalid vote count of 280.
Result declared at 04:44 on 13 December 2019.