An election to the 58th Parliament of the United Kingdom for the constituency area of Southampton, Test, held as part of the general election on 12 December 2019.
Labour hold by Alan Whitehead with a majority of 6,213 - 13.8% - on a turnout of 64.2%.
Candidates
| Name | Party | Vote | Vote share | Vote change |
| WHITEHEAD, Alan | Lab | 22,256 | 49.5% | -9.2% |
| GALTON, Steven | Con | 16,043 | 35.7% | 1.5% |
| RICHARDS, Joe | LD | 3,449 | 7.7% | 3.6% |
| CROOK, Philip | BRX | 1,591 | 3.5% | - |
| BARBOUR, Katherine | Green | 1,433 | 3.2% | - |
| BARRY, Kev | Ind | 222 | 0.5% | - |
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 70,116, having a valid vote count of 44,994 and an invalid vote count of 122.
Result declared at 05:04 on 13 December 2019.