List of Parliamentary constituencies in Wales

  ‡Labour   †Conservative   ₪Plaid Cymru   ¤Liberal Democrat   *Brexit Party   ȼIndependent

Constituency	Electorate[2]	Majority[3]	Member of Parliament[3]		Nearest opposition[3]		Map
Aberavon	50,750	10,490		Stephen Kinnock‡		Charlotte Lang†
Aberconwy	44,699	2,034		Robin Millar†		Emily Owen ‡
Alyn and Deeside	62,789	213		Mark Tami‡		Sanjoy Sen†
Arfon	42,215	2,781		Hywel Williams₪		Steffie Williams Roberts‡
Blaenau Gwent	50,739	8,647		Nick Smith‡		Richard Taylor*
Brecon and Radnorshire	55,490	7,131		Fay Jones†		Jane Dodds¤
Bridgend	63,303	1,157		Jamie Wallis†		Madeleine Moon‡
Caerphilly	63,166	6,833		Wayne David‡		Jane Pratt†
Cardiff Central	64,037	17,179		Jo Stevens‡		Meirion Jenkins†
Cardiff North	68,438	6,982		Anna McMorrin‡		Mo Ali†
Cardiff South and Penarth	78,837	12,737		Stephen Doughty‡		Philippa Broom†
Cardiff West	68,508	10,986		Kevin Brennan‡		Carolyn Webster†
Carmarthen East and Dinefwr	57,419	1,809		Jonathan Edwardsȼ		David Darkin†
Carmarthen West and South Pembrokeshire	59,158	7,745		Simon Hart†		Marc Tierney‡
Ceredigion	56,250	6,329		Ben Lake₪		Amanda Jenner¤
Clwyd South	53,919	1,239		Simon Baynes†		Susan Elan Jones‡
Clwyd West	57,714	6,747		David Jones†		Jo Thomas‡
Cynon Valley	51,134	8,822		Beth Winter‡		Pauline Church†
Delyn	54,560	865		Rob Roberts†		David Hanson‡
Dwyfor Meirionnydd	44,362	4,740		Liz Saville-Roberts₪		Tomos Davies†
Gower	61,762	1,837		Tonia Antoniazzi‡		Francesca O'Brien†
Islwyn	55,423	5,464		Christopher James Evans‡		Gavin Chambers†
Llanelli	60,518	4,670		Nia Griffith‡		Tamara Reay†
Merthyr Tydfil and Rhymney	56,322	10,606		Gerald Jones‡		Sara Jones†
Monmouth	67,098	9,982		David Davies†		Yvonne Murphy‡
Montgomeryshire	48,997	12,138		Craig Williams†		Kishan Devani¤
Neath	56,419	5,637		Christina Rees‡		Jon Burns†
Newport East	58,554	1,992		Jessica Morden‡		Mark Brown†
Newport West	66,657	902		Ruth Jones‡		Matthew Evans†
Ogmore	57,581	7,805		Chris Elmore‡		Sadie Vidal†
Pontypridd	60,327	5,887		Alex Davies-Jones‡		Sam Trask†
Preseli Pembrokeshire	59,606	5,062		Stephen Crabb†		Philippa Thompson‡
Rhondda	50,262	11,440		Chris Bryant‡		Hannah Jarvis
Swansea East	58,450	11,440		Carolyn Harris‡		Denise Howard†
Swansea West	57,078	8,116		Geraint Davies‡		James Price†
Torfaen	62,330	3,742		Nick Thomas-Symonds‡		Graham Smith†
Vale of Clwyd	56,649	1,827		James Davies†		Chris Ruane‡
Vale of Glamorgan	76,508	3,562		Alun Cairns†		Belinda Loveluck-Edwards‡
Wrexham	49,737	2,131		Sarah Atherton†		Mary Wimbury‡
Ynys Môn (Anglesey)	51,925	1,968		Virginia Crosbie†		Mary Roberts‡

The Boundary Commission for Wales submitted their final proposals in respect of the Sixth Periodic Review of Westminster Constituencies (the 2018 review) in September 2018. Although the proposals were immediately laid before Parliament they were not brought forward by the Government for approval. Accordingly, they did not come into effect for the 2019 election which took place on 12 December 2019, and which was contested using the constituency boundaries in place since 2010.

Under the terms of the Parliamentary Voting System and Constituencies Act 2011, the Sixth Review was based on reducing the total number of MPs from 650 to 600 and a strict electoral parity requirement that the electorate of all constituencies should be within a range of 5% either side of the electoral quota.

On 24 March 2020, the Minister of State for the Cabinet Office, Chloe Smith, issued a written statement to Parliament setting out the Government's thinking with regard to parliamentary boundaries.[4] Subsequently, the Parliamentary Constituencies Act 2020[5] was passed into law on 14 December 2020. This formally removed the duty to implement the 2018 review and set out the framework for future boundary reviews. The Act provided that the number of constituencies should remain at the current level of 650, rather than being reduced to 600, while retaining the requirement that the electorate should be no more than +/- 5% from the electoral quota.

The Act specified that the next review should be completed no later than 1 July 2023 and the Boundary Commission formally launched the 2023 Review on 5 January 2021.[6] The Commission have calculated that the number of seats to be allocated to Wales will decrease by 8, from 40 to 32.[7] This includes the protected constituency of Ynys Môn.

See 2023 Periodic Review of Westminster constituencies for further details.

Primary data source: House of Commons research briefing - General election results from 1918 to 2019[8]

2019

The number of votes cast for each political party who fielded candidates in constituencies comprising Wales in the 2019 general election were as follows:

Party	Votes	%	Change from 2017	Seats	Change from 2017
Labour	632,035	40.9%	8.0%	22	6
Conservative	557,234	36.1%	2.5%	14	6
Plaid Cymru	153,265	9.9%	0.5%	4	0
Liberal Democrats	92,171	6.0%	1.5%	0	0
Brexit	83,908	5.4%	new	0	0
Greens	15,828	1.0%	0.7%	0	0
Others	9,916	0.6%	1.6%	0	0
Total	1,544,357	100.0		40

Percentage votes

Wales votes percentage

Key:

CON - Conservative Party, including National Liberal Party up to 1966

LAB - Labour Party

LIB - Liberal Party up to 1979; SDP-Liberal Alliance 1983 & 1987; Liberal Democrats from 1992

PC - Plaid Cymru

UKIP/Br - UK Independence Party 2010 to 2017 (included in Other up to 2005 and in 2019); Brexit Party in 2019

Green - Green Party of England and Wales (included in Other up to 2005)

Seats

Wales seats

CON - Conservative Party, including National Liberal Party up to 1966

LAB - Labour Party

LIB - Liberal Party up to 1979; SDP-Liberal Alliance 1983 & 1987; Liberal Democrats from 1992

OTH - 1970 - Independent (S. O. Davies); 2005 - Independent (Peter Law)

PC - Plaid Cymru

• List of Parliamentary constituencies in Clwyd
• List of Parliamentary constituencies in Dyfed
• List of Parliamentary constituencies in Gwent
• List of Parliamentary constituencies in Gwynedd
• List of Parliamentary constituencies in Mid Glamorgan
• List of Parliamentary constituencies in Powys
• List of Parliamentary constituencies in South Glamorgan
• List of Parliamentary constituencies in West Glamorgan
• Senedd constituencies and electoral regions