CONSTITUENCY RESULT : Portsmouth South
| Candidate name | Party | Gender | Number of votes | Share (%) | Change vs. 2017 for party (percentage points) | ||
| Stephen Morgan | Labour | Male | 23,068 | 48.6% | +7.6 | ||
| Donna Jones | Conservative | Female | 17,705 | 37.3% | -0.2 | ||
| Gerald Vernon-Jackson | Liberal Democrat | Male | 5,418 | 11.4% | -5.9 | ||
| John Kennedy | Brexit Party | Male | 994 | 2.1% | 0.0 | ||
| Steven George | Justice and Anti-Corruption Party | Male | 240 | 0.5% | 0.0 |
| Election statistics | ||
| Majority | ||
| Votes | 5,363 | |
| Percent | 11.3% | |
| Rank (1 = highest %) | 484 | |
| Turnout | ||
| Constituency | 63.9% | |
| Region | 70.2% | |
| UK | 67.3% | |
| Constituency in 2017 | 63.9% | |
| Size of electorate | 74,186 | |
| Valid votes cast | 47,425 |