The preserved county of Gwent is divided into seven-and-a-half parliamentary constituencies — approximately one half of Merthyr Tydfil and Rhymney falls within Mid Glamorgan..

Constituencies NameCurrent boundaries Blaenau Gwent CC Caerphilly CC Islwyn CC Merthyr Tydfil and Rhymney CC (part) Monmouth CC Newport East CC Newport West CC Torfaen CC

ConstituencyElectorateMajorityMember of ParliamentNearest oppositionMap reference aboveBlaenau Gwent50,7368,647 Nick Smith ‡ Richard Taylor ৳1Caerphilly63,1666,833 Wayne David ‡ Jane Pratt †2Islwyn55,4235,464 Christopher Evans ‡ Gavin Chambers †3Merthyr Tydfil and RhymneyThis data is shown at list of Parliamentary constituencies in Mid GlamorganMonmouth67,0949,982 David Davies † Yvonne Murphy ‡5Newport East58,5541,992 Jessica Morden ‡ Mark Brown †6Newport West66,657902 Ruth Jones ‡ Matthew Evans †7Torfaen61,7433,742 Nick Thomas-Symonds ‡ Graham Smith †8 The current boundaries have been effective since the 2007 National Assembly for Wales election and the 2010 United Kingdom general election.The Parliamentary Constituencies and Assembly Electoral Regions (Wales) Order 2006, OPSI website Very, in relative terms, minor boundary changes occurred from the previous scheme and no name changes.

Proposed boundary changes 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. They propose to bring forward primary legislation to remove the statutory obligation to implement the 2018 Boundary Review recommendations, as well as set the framework for future boundary reviews in time for the next review which is due to begin in early 2021 and report no later than October 2023. It is proposed that the number of constituencies now remains 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.

Historical representation by party A cell marked → (with a different colour background to the preceding cell) indicates that the previous MP continued to sit under a new party name.

1885 to 1918

Constituency1885188618921895190001041906Jan 1910Dec 191017Monmouth BoroughsCarbuttElliotSpicerHarrisLawrenceHaslamMonmouthshire NorthPriceMcKennaMonmouthshire SouthMorganHerbertThomasMonmouthshire WestWarmingtonHarcourtRichards→

1918 to 1950

Constituency1918202219221923192419291931341935394045194545461950AbertilleryBraceBarkerDaggarBedwelltyEdwardsFinchEbbw ValeRichardsDaviesBevan→→MonmouthForestier-WalkerHerbertPymThorneycroftNewportHaslamClarryWalkerClarryBellFreemanPontypoolGriffithsJenkinsWest

1950 to 1983

Constituency19505019511955565819596019646519661970Feb 74Oct 74197981AbertilleryDaggarL. WilliamsA. WilliamsThomas→BedwelltyFinchKinnockEbbw ValeBevanFootMonmouthThorneycroftAndersonThomasNewportFreemanSoskiceHughesPontypoolWestAbse

1983 to present

Constituency1983198791199295199720012005062010201520171920192024Blaenau GwentB. G. & Rhymney ('24)FootL. SmithLawD. C. DaviesN. SmithCaerphillyR. DaviesDavidEvansIslwynKinnockTouhigC. EvansN/AMonmouthMonmouthshire (2024)ThomasEdwardsR. EvansEdwardsD. T. DaviesFookesNewport EastHughesHowarthMordenNewport WNewport W & Islwyn ('24)RobinsonFlynnJonesTorfaenAbseMurphyThomas-Symonds

See also List of parliamentary constituencies in Wales List of parliamentary constituencies in Mid Glamorgan for the other part of Merthyr Tydfil and Rhymney.

Notes and references References

Notes