An election to the 58th Parliament of the United Kingdom for the constituency area of Lewes, held as part of the general election on 12 December 2019.
Conservative hold by Maria Caulfield with a majority of 2,457 - 4.5% - on a turnout of 76.7%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| CAULFIELD, Maria | Con | 26,268 | 47.9% | -1.6% |
| HENMAN, Oli | LD | 23,811 | 43.4% | 4.1% |
| CHAPPELL, Kate | Lab | 3,206 | 5.8% | -5.3% |
| DENIS, Johnny | Green | 1,453 | 2.6% | - |
| CRAGG, Paul | Ind | 113 | 0.2% | - |
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 71,503, having a valid vote count of 54,851 and an invalid vote count of 144.
Result declared at 05:06 on 13 December 2019.