Results for a UK general election on 12 December 2019 Wales - Elections won by Labour
A general election to the 58th Parliament of the United Kingdom with an electorate of 47,562,702, having 32,014,110 valid votes and 117,919 invalid votes.
Read the House of Commons Library briefing.
Figures presented for Labour include those candidates certified by both the Labour and the Co-operative parties.
| Constituency | Candidate | Electorate | Turnout | Votes | Vote share | Vote change | Majority |
| Aberavon | KINNOCK, Stephen | 50,750 | 62.3% | 17,008 | 53.8% | -14.3% | 10,490 |
| Alyn and Deeside | TAMI, Mark | 62,789 | 68.5% | 18,271 | 42.5% | -9.6% | 213 |
| Blaenau Gwent | SMITH, Nick | 50,739 | 59.6% | 14,862 | 49.2% | -8.8% | 8,647 |
| Caerphilly | DAVID, Wayne | 63,166 | 63.5% | 18,018 | 44.9% | -9.5% | 6,833 |
| Cardiff Central | STEVENS, Jo | 64,037 | 65.3% | 25,605 | 61.2% | -1.2% | 17,179 |
| Cardiff North | MCMORRIN, Anna | 68,438 | 77.0% | 26,064 | 49.5% | -0.6% | 6,982 |
| Cardiff South and Penarth | DOUGHTY, Stephen | 78,837 | 64.2% | 27,382 | 54.1% | -5.4% | 12,737 |
| Cardiff West | BRENNAN, Kevin | 68,508 | 67.4% | 23,908 | 51.8% | -4.9% | 10,986 |
| Cynon Valley | WINTER, Beth | 51,134 | 59.1% | 15,533 | 51.4% | -9.6% | 8,822 |
| Gower | ANTONIAZZI, Tonia | 61,762 | 72.0% | 20,208 | 45.4% | -4.4% | 1,837 |
| Islwyn | EVANS, Chris | 55,423 | 62.0% | 15,356 | 44.7% | -14.1% | 5,464 |
| Llanelli | GRIFFITH, Nia | 60,518 | 63.2% | 16,125 | 42.2% | -11.3% | 4,670 |
| Merthyr Tydfil and Rhymney | JONES, Gerald | 56,322 | 57.3% | 16,913 | 52.4% | -14.3% | 10,606 |
| Neath | REES, Christina | 56,419 | 65.1% | 15,920 | 43.3% | -13.4% | 5,637 |
| Newport East | MORDEN, Jessica | 58,554 | 62.0% | 16,125 | 44.4% | -12.1% | 1,992 |
| Newport West | JONES, Ruth | 66,657 | 65.2% | 18,977 | 43.7% | -8.6% | 902 |
| Ogmore | ELMORE, Chris | 57,581 | 61.5% | 17,602 | 49.7% | -12.7% | 7,805 |
| Pontypridd | DAVIES-JONES, Alex | 60,327 | 64.7% | 17,381 | 44.5% | -10.9% | 5,887 |
| Rhondda | BRYANT, Chris | 50,262 | 59.0% | 16,115 | 54.4% | -9.7% | 11,440 |
| Swansea East | HARRIS, Carolyn | 58,450 | 57.4% | 17,405 | 51.8% | -11.6% | 7,970 |
| Swansea West | DAVIES, Geraint | 57,078 | 62.8% | 18,493 | 51.6% | -8.1% | 8,116 |
| Torfaen | THOMAS-SYMONDS, Nick | 62,330 | 59.6% | 15,546 | 41.8% | -15.8% | 3,742 |
Turnout as calculated by the House of Commons Library, is the total number of votes cast and not spoiled, divided by the size of the electorate.