CONSTITUENCY RESULT : Cardiff South and Penarth
| Candidate name | Party | Gender | Number of votes | Share (%) | Change vs. 2017 for party (percentage points) | ||
| Stephen Doughty | Labour and Co-operative | Male | 27,382 | 54.1% | -5.4 | ||
| Philippa Broom | Conservative | Female | 14,645 | 29.0% | -1.2 | ||
| Dan Schmeising | Liberal Democrat | Male | 2,985 | 5.9% | +3.1 | ||
| Nasir Adam | Plaid Cymru | Male | 2,386 | 4.7% | +0.5 | ||
| Tim Price | Brexit Party | Male | 1,999 | 4.0% | 0.0 | ||
| Ken Barker | Green | Male | 1,182 | 2.3% | +1.3 |
| Election statistics | ||
| Majority | ||
| Votes | 12,737 | |
| Percent | 25.2% | |
| Rank (1 = highest %) | 300 | |
| Turnout | ||
| Constituency | 64.2% | |
| Region | 66.6% | |
| UK | 67.3% | |
| Constituency in 2017 | 66.3% | |
| Size of electorate | 78,837 | |
| Valid votes cast | 50,579 |