Plaid Cymru Target Seats

Below are lists of Plaid Cymru target seats showing which constituencies can be most easily won from an opposing party relative to the latest elections.

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Plaid Cymru Target Seats 2024

Below is the list of Plaid Cymru target seats for the 2024 general election. The list is ordered from the smallest to the largest swing needed for the seat to change hands.

View Plaid Cymru held marginal seats vulnerable at the next general election.

(order by percentage majority)

RankConstituencyRegionMajority over PCSwing Needed
1.Ynys MonWales2,5413.48%
2.CaerfyrddinWales4,5294.25%
3.LlanelliWales7,9769.53%
4.CaerphillyWales13,15314.59%
5.PontypriddWales16,29117.87%
6.Neath and Swansea EastWales17,28219.70%
7.Cardiff WestWales21,63221.34%
8.Merthyr Tydfil and AberdareWales18,77921.78%
9.Rhondda and OgmoreWales18,65921.93%
10.Aberafan MaestegWales19,51821.97%
11.Blaenau Gwent and RhymneyWales18,52822.01%
12.Bangor AberconwyWales11,50622.22%
13.Swansea WestWales20,11422.80%
14.Montgomeryshire and GlyndwrWales26,44725.82%
15.Cardiff South and PenarthWales24,93925.98%
16.Brecon, Radnor and Cwm TaweWales22,67625.99%
17.MonmouthshireWales26,28529.22%
18.Cardiff EastWales27,41129.30%
19.TorfaenWales17,05029.71%
20.Pembrokeshire Mid and SouthWales26,15531.90%

View Plaid Cymru held marginal seats vulnerable at the next general election.

Plaid Cymru Target Seats for the 2026 Senedd Election

Below is the list of Plaid Cymru target seats for the 2026 Senedd election. The list is ordered from the smallest to the largest swing needed for the seat to change hands.

View Plaid Cymru held marginal seats vulnerable at the next Senedd election.

(order by percentage majority)

RankConstituencyRegionMajority over PCSwing Needed
1.AberconwyNorth Wales3,3367.08%
2.CaerphillySouth Wales East5,0788.78%
3.LlanelliMid and West Wales5,6759.39%
4.NeathSouth Wales West5,2219.47%
5.PontypriddSouth Wales Central5,3289.67%
6.WrexhamNorth Wales3,62010.04%
7.Clwyd WestNorth Wales6,23010.98%
8.Carmarthen West and Pembrokeshire SouthMid and West Wales4,62511.65%
9.RhonddaSouth Wales Central5,49711.72%
10.IslwynSouth Wales East6,03212.32%
11.AberavonSouth Wales West5,74512.96%
12.Clwyd SouthNorth Wales6,35414.22%
13.Swansea WestSouth Wales West7,21615.04%
14.MontgomeryshireMid and West Wales7,52815.06%
15.Preseli PembrokeshireMid and West Wales6,16015.10%
16.Blaenau GwentSouth Wales East6,63815.94%
17.Cardiff WestSouth Wales Central11,76816.11%
18.OgmoreSouth Wales West8,16516.67%
19.Cardiff CentralSouth Wales Central9,63016.88%
20.BridgendSouth Wales West9,29717.76%
21.Cardiff South and PenarthSouth Wales Central13,19618.13%
22.Cynon ValleySouth Wales Central7,46818.20%
23.TorfaenSouth Wales East9,00818.80%
24.GowerSouth Wales West11,68520.78%
25.Brecon and RadnorshireMid and West Wales10,66621.32%

View Plaid Cymru held marginal seats vulnerable at the next Senedd election.

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