; ) is a six-member constituency of the Senedd (Welsh Parliament; ) used in the 2026 Senedd election. It covers the counties Ceredigion and Pembrokeshire in West Wales.
It was proposed following the 2026 review of Senedd constituencies, and is a pairing of the two UK Parliament constituencies of Ceredigion Preseli and Mid and South Pembrokeshire. Like all constituencies resulting from the 2026 review, it has a Welsh-only name.
Boundaries A Senedd constituency comprising the boundaries of the UK Parliament constituencies of Ceredigion Preseli and Mid and South Pembrokeshire, has been proposed by the Democracy and Boundary Commission Cymru for the 2026 election to the Senedd (Welsh Parliament; ). It was initially proposed using the English name Ceredigion and Pembrokeshire in September 2024, but was renamed in December proposals with most constituencies using Welsh-only names. The Welsh-only name and boundaries were confirmed in the commission's final recommendations in March 2025. When announcing their candidates, Reform UK used "Ceredigion Preseli, Mid and South Pembrokeshire" instead, using the English names for the pair of UK Parliament constituencies that form it.
It encompasses the entire principal areas (counties) of Ceredigion and Pembrokeshire in West Wales. The constituency was established in 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. Members of the Senedd Term Election Distribution MS MS MS MS MS MS 7th 2026 3 1 2 Elin Jones(PC) Claire Archibald(Ref) Kerry Ferguson(PC) Paul Davies(Con) Paul Marr(Ref) Anna Nicholl(PC)
Elections Elections in the 2020s
2021 notional result Party Vote % Seats Plaid Cymru 27,004 33.3 2 Conservative 23,761 29.3 2 Labour 20,350 25.1 2 Liberal Democrats 4,905 6.1 0 Reform UK 2,265 2.8 0 Green 1,356 1.7 0 UKIP 582 0.7 0 Independent 514 0.6 0 Freedom Alliance 305 0.4 0
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