An election to the 58th Parliament of the United Kingdom for the constituency area of South East Cambridgeshire, held as part of the general election on 12 December 2019.
Conservative hold by Lucy Frazer with a majority of 11,490 - 17.8% - on a turnout of 74.2%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| FRAZER, Lucy | Con | 32,187 | 50.0% | -3.3% |
| HEYLINGS, Pippa | LD | 20,697 | 32.1% | 13.2% |
| BULL, James | Lab | 10,492 | 16.3% | -11.4% |
| FORDHAM, Edmund | Ind | 1,009 | 1.6% | - |
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 86,769, having a valid vote count of 64,385 and an invalid vote count of 255.
Result declared at 04:45 on 13 December 2019.