CONSTITUENCY RESULT : Milton Keynes South
| Candidate name | Party | Gender | Number of votes | Share (%) | Change vs. 2017 for party (percentage points) | ||
| Iain Stewart | Conservative | Male | 32,011 | 50.0% | +2.5 | ||
| Hannah O’Neill | Labour | Female | 25,067 | 39.2% | -5.7 | ||
| Saleyha Ahsan | Liberal Democrat | Female | 4,688 | 7.3% | +4.4 | ||
| Alan Francis | Green | Male | 1,495 | 2.3% | +0.5 | ||
| Stephen Fulton | Independent | Male | 539 | 0.8% | 0.0 | ||
| Amarachi Ogba | Christian Peoples Alliance Party | Female | 207 | 0.3% | 0.0 |
| Election statistics | ||
| Majority | ||
| Votes | 6,944 | |
| Percent | 10.8% | |
| Rank (1 = highest %) | 495 | |
| Turnout | ||
| Constituency | 66.4% | |
| Region | 70.2% | |
| UK | 67.3% | |
| Constituency in 2017 | 69.8% | |
| Size of electorate | 96,363 | |
| Valid votes cast | 64,007 |