CONSTITUENCY RESULT : Cynon Valley
| Candidate name | Party | Gender | Number of votes | Share (%) | Change vs. 2017 for party (percentage points) | ||
| Beth Winter | Labour | Female | 15,533 | 51.4% | -9.6 | ||
| Pauline Church | Conservative | Female | 6,711 | 22.2% | +2.8 | ||
| Rebecca Rees-Evans | Brexit Party | Female | 3,045 | 10.1% | 0.0 | ||
| Geraint Benney | Plaid Cymru | Male | 2,562 | 8.5% | -5.3 | ||
| Andrew Chainey | The Cynon Valley Party | Male | 1,322 | 4.4% | 0.0 | ||
| Steve Bray | Liberal Democrat | Male | 949 | 3.1% | +1.3 | ||
| Ian McLean | Social Democratic Party | Male | 114 | 0.4% | 0.0 |
| Election statistics | ||
| Majority | ||
| Votes | 8,822 | |
| Percent | 29.2% | |
| Rank (1 = highest %) | 258 | |
| Turnout | ||
| Constituency | 59.1% | |
| Region | 66.6% | |
| UK | 67.3% | |
| Constituency in 2017 | 62.0% | |
| Size of electorate | 51,134 | |
| Valid votes cast | 30,236 |