Below are lists of Plaid Cymru target seats showing which constituencies can be most easily won from an opposing party relative to the specified election.
Historical
Below is the list of Plaid Cymru target seats for the 2029 general election based on the 2024 boundaries. The list is ordered from the most vulnerable seats to the safest.
| Rank | Constituency | Region | Majority over PC | Swing Needed | |
|---|---|---|---|---|---|
| 1. | Llanelli | Wales | 3,240 | 4.26% | |
| 2. | Bangor Aberconwy | Wales | 4,896 | 5.88% | |
| 3. | Cardiff West | Wales | 7,019 | 7.84% | |
| 4. | Montgomeryshire and Glyndwr | Wales | 7,042 | 8.14% | |
| 5. | Caerphilly | Wales | 6,419 | 8.39% | |
| 6. | Pontypridd | Wales | 10,950 | 13.90% | |
| 7. | Neath and Swansea East | Wales | 11,447 | 14.26% | |
| 8. | Wrexham | Wales | 11,698 | 14.49% | |
| 9. | Swansea West | Wales | 10,656 | 14.94% | |
| 10. | Bridgend | Wales | 12,887 | 15.57% | |
| 11. | Merthyr Tydfil and Aberdare | Wales | 11,023 | 15.65% | |
| 12. | Cardiff East | Wales | 12,283 | 15.70% | |
| 13. | Newport West and Islwyn | Wales | 13,880 | 16.54% | |
| 14. | Rhondda and Ogmore | Wales | 11,920 | 16.65% | |
| 15. | Cardiff North | Wales | 16,180 | 17.04% | |
| 16. | Gower | Wales | 16,538 | 17.51% | |
| 17. | Torfaen | Wales | 12,605 | 17.65% | |
| 18. | Cardiff South and Penarth | Wales | 14,201 | 18.12% | |
| 19. | Newport East | Wales | 14,131 | 18.34% | |
| 20. | Aberafan Maesteg | Wales | 13,119 | 18.35% | |
| 21. | Alyn and Deeside | Wales | 16,457 | 18.96% | |
| 22. | Blaenau Gwent and Rhymney | Wales | 12,183 | 20.36% | |
| 23. | Clwyd East | Wales | 14,751 | 21.18% | |
| 24. | Brecon, Radnor and Cwm Tawe | Wales | 11,456 | 21.45% | |
| 25. | Vale of Glamorgan | Wales | 14,495 | 22.43% | |
| 26. | Pembrokeshire Mid and South | Wales | 13,543 | 25.02% | |
| 27. | Clwyd North | Wales | 11,635 | 25.08% | |
| 28. | Monmouthshire | Wales | 19,737 | 32.25% | |