Pontypridd Cynon Merthyr (Senedd constituency)

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Pontypridd Cynon Merthyr
County multi-member constituency
for the Senedd
PontypriddCynonMerthyr2026SeneddConstituency.svg
Boundary of Pontypridd Cynon Merthyr in Wales
Principal areas
Preserved county
Major settlements Abercynon, Aberdare, Llantrisant, Merthyr Tydfil, Mountain Ash, Pontypridd,
Future County multi-member constituency
Created 2026
Seats6
Created from

Pontypridd Cynon Merthyr ( Welsh for ' Pontypridd , Cynon , [and] Merthyr (Tydfil) ') is a proposed six-member constituency of the Senedd (Welsh Parliament; Welsh : Senedd Cymru) to be used for the 2026 Senedd election.

Contents

It was proposed following the 2026 review of Senedd constituencies, and will be a pairing of the two UK Parliament constituencies of Merthyr Tydfil and Aberdare and Pontypridd. It is to have a Welsh-only name.

Boundaries

A Senedd constituency comprising the boundaries of the UK Parliament constituencies of Merthyr Tydfil and Aberdare and Pontypridd, has been proposed by the Democracy and Boundary Commission Cymru for the 2026 election to the Senedd (Welsh Parliament; Senedd Cymru). It was initially proposed using the English name Merthyr Tydfil, Aberdare and Pontypridd in September 2024, [1] but was renamed to Merthyr Cynon Taf in December proposals with most constituencies using Welsh-only names. [2] It was then given the Welsh-only name Pontypridd Cynon Merthyr and its boundaries were confirmed in the commission's final recommendations in March 2025. [3]

It encompasses parts of the principal areas (county boroughs) of Merthyr Tydfil County Borough and Rhondda Cynon Taf in South Wales. The constituency is to be established by 2026, following the passing of the Senedd Cymru (Members and Elections) Act 2024. The act legislates electoral reform of the Senedd to create 16 larger "super constituencies", pairing the 32 UK Parliament constituencies in Wales, and using a new fully proportional voting system, with each constituency electing six Members of the Senedd (MSs) rather than one previously. [1]

Elections

Elections in the 2020s

Next Senedd election: Pontypridd Cynon Merthyr
PartyCandidateVotes%±%
Majority
Turnout
Registered electors
win (new seat)

References

  1. 1 2 Hayward, Will (2 September 2024). "The full details of Wales' 16 new constituencies for Senedd elections". Wales Online. Retrieved 28 February 2025.
  2. "Proposed Senedd constituency names divides opinion". ITV News . 17 December 2024.
  3. Price, Emily (11 March 2025). "New Senedd 'super constituencies' confirmed". Nation.Cymru. Retrieved 11 March 2025.