CONSTITUENCY RESULT : Southampton Itchen
| Candidate name | Party | Gender | Number of votes | Share (%) | Change vs. 2017 for party (percentage points) | ||
| Royston Smith | Conservative | Male | 23,952 | 50.5% | +4.0 | ||
| Simon Letts | Labour | Male | 19,454 | 41.0% | -5.5 | ||
| Liz Jarvis | Liberal Democrat | Female | 2,503 | 5.3% | +2.2 | ||
| Osman Sen-Chadun | Green | Male | 1,040 | 2.2% | +0.6 | ||
| Kim Rose | UK Independence Party | Male | 472 | 1.0% | -1.4 |
| Election statistics | ||
| Majority | ||
| Votes | 4,498 | |
| Percent | 9.5% | |
| Rank (1 = highest %) | 522 | |
| Turnout | ||
| Constituency | 65.6% | |
| Region | 70.2% | |
| UK | 67.3% | |
| Constituency in 2017 | 65.2% | |
| Size of electorate | 72,299 | |
| Valid votes cast | 47,421 |