Caerdydd Penarth Senedd 2026 Candidates List: Full Details, Caerdydd 2026

Key Points

• The Caerdydd Penarth constituency covers the Westminster constituencies of Cardiff West and Cardiff South and Penarth.
• It will elect six Members of the Senedd (MSs) on May 7, 2026, under a new proportional representation system established by the Senedd Cymru (Members and Elections) Act 2024.
• The constituency encompasses parts of Cardiff and the Vale of Glamorgan in South Wales.
• Candidates have been finalised as of April 10, 2026, across major parties including Conservative, Green, Labour, Liberal Democrat, and Plaid Cymru.
• Full lists include multiple candidates per party, reflecting the multi-member structure of the new “super constituencies.”

Caerdydd Penarth (Cardiff Daily) April 16, 2026 – The full roster of candidates standing for election in the newly formed Caerdydd Penarth constituency for the Senedd Election 2026 has been released, covering the areas of Cardiff West and Cardiff South and Penarth. This six-member seat, one of 16 super constituencies created under recent electoral reforms, will see voters in southern and western Cardiff, including Penarth and parts of the Vale of Glamorgan, choose their representatives on May 7, 2026.

Who Are the Candidates Standing in Caerdydd Penarth for the 2026 Senedd Election?

The candidate lists were finalised on April 10, 2026, as detailed by ITV News Wales. As reported by ITV News Wales, the Conservative Party candidates are: Calum Davies, James Robert Hamblin, Dominic Owen Davies, Judith Elizabeth Child, Archie Draycott, and Eddy Oko-Jaja.

The Green Party candidates, according to the same ITV report, comprise: Anthony Slaughter, Tessa Marshall, Rowan Stanger, Tavgar Bulbas, Max O’Hara, and Iwan Sinclair.

Labour Party candidates listed by ITV News Wales include: Huw Thomas, Ruba Sivagnanam, Peter Evan Bradbury, Steve Brooks, Mutale Merrill, Kanya Singh, and Laura Rochefort.

Liberal Democrat candidates, per ITV News Wales, are: Cadan Dyfynnog Hedd ap Tomos, Irfan Latif, Elinor Claire Dixon, Barry Charles Southwell, Chris Cogger, and Ashley Kalum Wood.

Plaid Cymru candidates, as reported by ITV News Wales and corroborated by Plaid Cymru’s own site, consist of: Anna Heledd Brychan, Kiera Duncan Marshall, Leticia Andrea Gonzalez Estigarribia, Malcolm Phillips, Matthew James Kenneth Hawkins, and Tomos James Scott Stokes.

WalesOnline confirms that Caerdydd Penarth covers the Westminster constituencies of Cardiff West and Cardiff South and Penarth, highlighting its pivotal role in the election.

What Changes Have Been Made to the Constituency Boundaries for Caerdydd Penarth?

The Democracy and Boundary Commission Cymru (DBCC) confirmed the constituencies for the 2026 Senedd election in March 2025. According to the DBCC, two changes were made to the revised proposals: the creation of Caerdydd Penarth and Caerdydd Ffynnon Taf, replacing the previously proposed De-ddwyrain Caerdydd Penarth and Gogledd-orllewin Caerdydd constituencies.

This final configuration pairs Cardiff West with Cardiff South and Penarth, as noted by Bayside Radio echoing the DBCC announcement.

Wikipedia details that Caerdydd Penarth (Welsh for ‘Cardiff [and] Penarth’) is a proposed six-member constituency established by the Senedd Cymru (Members and Elections) Act 2024, which reforms the Senedd into 16 larger constituencies, each electing six MSs via a fully proportional voting system.

Why Is Caerdydd Penarth a Key Constituency in the 2026 Senedd Election?

Residents in southern and western parts of Cardiff, including Penarth and regions of the Vale of Glamorgan, will select six Senedd members from this constituency, as outlined by WalesOnline.

The shift to super constituencies pairs the 32 UK Parliament constituencies in Wales into 16, aiming for greater proportionality, per Wikipedia.

Plaid Cymru’s site highlights candidates like Anna Brychan and Kiera Marshall, noting Kiera Marshall’s 2024 Westminster run where she achieved a 12.6% vote share increase for the party in Cardiff.

ITV News Wales has covered election issues across all constituencies, including Caerdydd Penarth, ahead of the May poll.

How Does the New Electoral System Work in Caerdydd Penarth?

Under the Senedd Cymru (Members and Elections) Act 2024, the election uses a fully proportional system, with each of the 16 constituencies electing six members, replacing the previous single-member setup.

This structure responds to boundary reviews by the DBCC, finalised after public consultations.

Voters will rank or select candidates proportionally within the multi-member framework, though specific ballot details await further guidance from electoral authorities.

Background of the Development

The formation of Caerdydd Penarth stems from the Senedd Cymru (Members and Elections) Act 2024, passed to reform Welsh Parliament elections by creating 16 six-member super constituencies from paired Westminster seats. The DBCC’s final determinations in March 2025 adjusted earlier proposals, confirming Caerdydd Penarth by combining Cardiff West and Cardiff South and Penarth, alongside changes like Caerdydd Ffynnon Taf. This followed extensive boundary reviews to balance electorates and reflect geographic ties in South Wales. The constituency spans Cardiff’s principal areas and the Vale of Glamorgan, integrating urban Cardiff with coastal Penarth. Candidate nominations closed recently, with lists published by April 13, 2026, enabling parties to field multiple representatives per seat.

Prediction: Impact on Voters in Caerdydd Penarth

This development introduces a proportional system that allows voters in Caerdydd Penarth to influence six MS seats simultaneously, potentially increasing representation for smaller parties and diverse voices from Cardiff West, Cardiff South and Penarth, and Vale areas. Residents may see more balanced policy focus on local issues like housing and transport, as multi-party lists encourage broader coalitions. The larger electorate could dilute single-issue dominance, affecting turnout and vote strategy among the area’s 100,000-plus voters by promoting list-based choices over individual candidates.