An election to the 58th Parliament of the United Kingdom for the constituency area of Midlothian, held as part of the general election on 12 December 2019.
SNP gain from Labour by Owen Thompson with a majority of 5,705 - 11.8% - on a turnout of 68.4%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| THOMPSON, Owen | SNP | 20,033 | 41.5% | 7.1% |
| ROWLEY, Danielle | Lab | 14,328 | 29.7% | -6.6% |
| FRASER, Rebecca | Con | 10,467 | 21.7% | -3.7% |
| ARRUNDALE, Steve | LD | 3,393 | 7.0% | 3.2% |
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 70,544, having a valid vote count of 48,221 and an invalid vote count of 140.
Result declared at 02:41 on 13 December 2019.