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Plaid Cymru

4 MPs won at the 2024 GE 1 upcoming election with a candidate

Seats won by year

7
2016
191
2017
1
2018
10
2019
1
2020
11
2021
181
2022
3
2023
8
2024
6
2025
54
2026
  • Council
  • Westminster
  • Devolved
  • Other

All election types, 2016 onwards. Devolved covers Holyrood, the Senedd, Stormont and the London Assembly.

By-election form, last 12 months

In the last 12 months of by-elections: defended 10 (held 8, lost 2); gained 5.

  • GAINBro'r LlynnoeddIsle of Anglesey County Council · 30 Jul 2026
  • HOLDTrebanosNeath Port Talbot County Borough Council · 9 Jul 2026
  • HOLDBarucVale of Glamorgan Council · 9 Jul 2026
  • GAINGlantwymynPowys County Council · 2 Jul 2026
  • GAINLlangennechCarmarthenshire County Council · 25 Jun 2026 · from Reform
  • LOSSLlanrhaeadr-yng-NghinmeirchDenbighshire County Council · 25 Jun 2026 · to Independent
  • HOLDTreorchyRhondda Cynon Taf County Borough Council · 25 Jun 2026
  • HOLDActon and MaesydreWrexham County Borough Council · 18 Jun 2026
  • HOLDGrosvenorWrexham County Borough Council · 18 Jun 2026
  • HOLDQueenswayWrexham County Borough Council · 18 Jun 2026
  • GAINVanCaerphilly County Borough Council · 19 Feb 2026 · from Labour
  • GAINFishguard: North EastPembrokeshire County Council · 10 Feb 2026 · from Labour

Where they're standing next

  • HengoedCaerphilly County Borough Council · 6 Aug 2026

Strongest constituencies, 2024 General Election

  • Dwyfor MeirionnyddWon53.9%
  • Ceredigion PreseliWon46.9%
  • CaerfyrddinWon34%
  • Ynys MonWon32.5%
  • LlanelliDid not win23.3%

Share of all votes cast in the constituency.

Election data provided by Democracy Club

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