Caerdydd Penarth

Caerdydd Penarth
County multi-member constituency
for the Senedd
Outline map
Boundary of Caerdydd Penarth in Wales
Principal areas
Preserved county
Major settlementsCardiff (south and west), Miskin, Penarth
Future County multi-member constituency
Created2026
Seats6
Created from

Caerdydd Penarth (Welsh for 'Cardiff [and] Penarth'; listen) is a proposed six-member constituency of the Senedd (Welsh Parliament; Welsh: Senedd Cymru) to be used for the 2026 Senedd election.

It was proposed following the 2026 review of Senedd constituencies, and will be a pairing of the two UK Parliament constituencies of Cardiff West and Cardiff South and Penarth. It is to have a Welsh-only name.

Boundaries

A Senedd constituency comprising the boundaries of the UK Parliament constituencies of Cardiff West and Cardiff South and Penarth, 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 Cardiff West, South and Penarth in September 2024.[1] The pairing was then switched from Cardiff West to Cardiff East and renamed to Cardiff South-east Penarth, and its Welsh name being De-ddwyrain Caerdydd Penarth in December proposals, despite most other constituencies using Welsh-only names.[2] It was later given the Welsh-only name Caerdydd Penarth and its boundaries were reverted back to using Cardiff West rather than Cardiff East in the commission's final recommendations in March 2025.[3]

It encompasses parts of the principal areas (counties/county boroughs) of Cardiff, Rhondda Cynon Taf and the Vale of Glamorgan 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

2026 Senedd election: Caerdydd Penarth
Party Candidate Votes % ±%
Conservative Calum Davies
Green Anthony Slaughter
Tessa Marshall
Labour Huw Thomas[4]
Ruba Sivanangam
Peter Bradbury
Steve Brooks
Mutale Merrill
Kanaya Singh
Helen Gunter
Laura Rochefort
Plaid Cymru Anna Brychan
Kiera Marshall
Leticia Gonzalez
Neil Roberts
Malcolm Phillips
Mathew Hawkins
Propel Neil McEvoy[5]
Majority
Turnout
Registered electors
win (new seat)
2021 notional result [a]
Party Vote % Seats
Labour 35,502 48.2 4
Conservative 14,210 19.3 1
Plaid Cymru 10,913 14.8 1
Others 6,522 8.7 0
Liberal Democrats 3,083 4.2 0
Green 2,897 3.9 0
Reform UK 490 0.7 0

Notes

  1. ^ Estimate of the 2021 Senedd election result as if the revised boundaries recommended under the 2026 boundary review were in place

References

  1. ^ a b 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.
  4. ^ Green, Daniel (2 December 2025). "Senedd elections 2026: Who are Welsh Labour's candidates?". LabourList. Retrieved 6 January 2026.
  5. ^ "Neil McEvoy chosen as Propel's lead prospective candidate for Caerdydd Penarth in next year's Senedd election". Propel Wales. Retrieved 4 February 2026.