Back Etholaethau a Rhanbarthau etholiadol Senedd Cymru Welsh Circonscriptions et régions électorales du Senedd French Senedd constituencies and electoral regions SIMPLE
| Senedd constituencies and electoral regions | |
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 Map of the 40 constituencies (left side) and the 5 electoral regions (right side) of the Senedd in Wales | |
| Category | Electoral district |
| Location | Wales |
| Created by | Government of Wales Act 1998 |
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| Number | 40 constituencies 5 regions[a] (as of 2021) |
| Populations | Constituency: 43,125 (Arfon) - 81,366 (Cardiff South and Penarth) Region: 413,569 (South Wales West) - 523,096 (South Wales Central) |
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| This article is part of a series within the Politics of the United Kingdom on the |
| Politics of Wales |
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The Senedd constituencies and electoral regions (Welsh: Etholaethau a Rhanbarthau etholiadol Senedd Cymru)[i] are the electoral districts used to elect members of the Senedd (MS; Welsh: Aelodau'r Senedd or AS) to the Senedd (Welsh Parliament; Welsh: Senedd Cymru), and have been used in some form since the first election of the then National Assembly for Wales in 1999.
There are currently forty single-member constituencies and five four-member regions. The five electoral regions are: Mid and West Wales, North Wales, South Wales Central, South Wales East, and South Wales West, with the forty constituencies listed below.[4] Voting last took place in all districts in the 2021 Senedd election, and is not used for local government. The current boundaries were introduced for the 2007 Assembly election.
The constituencies were created through the Government of Wales Act 1998, which established the National Assembly for Wales. The Assembly's constituencies were initially linked to the boundaries used for UK Parliament constituencies in Wales, set by the UK Parliament's Boundary Commission for Wales, except a delay in implementing new boundaries between the 2007 Assembly election and the subsequent 2010 UK election. The Parliamentary Voting System and Constituencies Act 2011, unlinked the two sets of constituencies, meaning any changes to one set, no longer affected the other. Subsequently, the UK Parliament introduced new constituencies for its 2024 UK election, and the Democracy and Boundary Commission Cymru was set up in 2024 to conduct boundary reviews of Senedd constituencies, with the constituencies not been overseen by a statutory body prior to 2024.[5]
As part of Senedd reforms, new boundaries will be introduced for the 2026 Senedd election following a boundary review, consisting of sixteen six-member constituencies with Welsh-only names, while the electoral regions are being abolished. Another review will be conducted for the 2030 election.
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- ^ "Senedd and Elections (Wales) Act 2020". legislation.gov.uk. Retrieved 8 July 2021.
- ^ "Government of Wales Act 2006". legislation.gov.uk. Retrieved 11 July 2021.
- ^ Perks, William. "Data for the Senedd Cymru constituency areas: 2021". gov.wales. Senedd Research. Retrieved 8 July 2021.
- ^ "The Parliamentary Constituencies and Assembly Electoral Regions (Wales) Order 2006". www.opsi.gov.uk.
- ^ "Parliamentary Voting System and Constituencies Act 2011". legislation.gov.uk. UK Parliament.
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