Every new constituency proposed for Wales and the reasons they were chosen
There are set to be new constituency boundaries for the next Senedd election in 2026. A total of 16 constituencies are set to be created by combining the current 32 Westminster seats. Each seat will then get six MSs. The Democracy and Boundary Commission Cymru has published initial proposals for Wales’ new Senedd constituencies outlining what the new boundaries will look like.
Bangor Aberconwy Ynys Môn
Created by combining: Bangor Abercowny and Ynys Môn. Ynys Môn only has road connections to the mainland via the Bangor Aberconwy UK Parliamentary constituency. The Commission believes that combining the areas as proposed is appropriate due to good transport links within the proposed constituency. The proposed name chosen is Bangor Aberconwy Ynys Môn.
Clwyd
Created by combining: Clwyd East and Clwyd North. The Commission has proposed the single language name of Clwyd to represent the constituency to avoid an unnecessarily long name due to boundary constraints.
Alyn, Deeside and Wrexham
Created by combining: Alyn and Deeside with Wrexham. The areas are well connected by transport links, and the Commission believes they are similar in character. The proposed name chosen is Alyn and Deeside and Wrexham.
Dwyfor Meirionnydd, Montgomeryshire and Glyndŵr
Created by combining: Dwyfor Meirionnydd with Montgomeryshire and Glyndŵr. The Commission decided on this combination for a contiguous alternative that is well connected by reasonable road links. The proposed name chosen is Dwyfor Meirionnydd, Montgomeryshire and Glyndŵr.
Ceredigion and Pembrokeshire
Created by combining: Ceredigion Preseli and Mid and South Pembrokeshire. The Commission believes good road links exist between the areas, uniting Pembrokeshire into a single constituency. The proposed name chosen is Ceredigion and Pembrokeshire.
Carmarthenshire
Created by combining: Caerfyrddin with Llanelli. The proposed constituency would combine the whole of the Carmarthenshire principal council area. The proposed name chosen is Carmarthenshire and Sir Gaerfyrddin.
Swansea West and Gower
Created by combining: Gower with Swansea West. The proposed name chosen is Swansea West and Gower.
Brecon, Radnor, Neath and Swansea East
Created by combining: Brecon, Radnor and Cwm Tawe with Neath and Swansea East. The proposed name chosen is Brecon, Radnor, Neath and Swansea East.
Aberafan Maesteg, Rhondda and Ogmore
Created by combining: Aberafan Maesteg with Rhondda and Ogmore. The proposed name chosen is Aberafan Maesteg, Rhondda and Ogmore.
Merthyr Tydfil, Aberdare and Pontypridd
Created by combining: Merthyr Tydfil and Aberdare with Pontypridd. The proposed name chosen is Merthyr Tydfil, Aberdare and Pontypridd.
Blaenau Gwent, Rhymney and Caerphilly
Created by combining: Blaenau Gwent and Rhymney with Caerphilly. The proposed name chosen is Blaenau Gwent, Rhymney and Caerphilly.
Monmouthshire and Torfaen
Created by combining: Monmouthshire with Torfaen. The proposed name chosen is Monmouthshire and Torfaen.
Newport and Islwyn
Created by combining: Newport East with Newport West and Islwyn. The proposed name chosen is Newport and Islwyn.
Cardiff East and North
Created by combining: Cardiff East with Cardiff North. The proposed name chosen is Cardiff East and North.
Cardiff West, South and Penarth
Created by combining: Cardiff South and Penarth with Cardiff West. The proposed name chosen is Cardiff West, South and Penarth.
Vale of Glamorgan and Bridgend
Created by combining: Bridgend and the Vale of Glamorgan. The proposed name chosen is Vale of Glamorgan and Bridgend.
These proposals aim to establish new constituency boundaries for the upcoming Senedd elections in 2026, aiming to create cohesive areas that are well-connected by transport links. The boundaries are designed to represent the diverse regions of Wales efficiently and are subject to further review and potential changes before final implementation.