Monmouth Mynwy
Formercounty constituency for theHouse of Commons
Boundary of Monmouth Mynwy inWales
Preserved county	Gwent
Electorate	65,432 (December 2010)[1]
Major settlements	Abergavenny,Chepstow,Monmouth
1918–2024
Seats	One
Created from	Monmouth Boroughs,North Monmouthshire andSouth Monmouthshire
Replaced by	Monmouthshire Torfaen
Senedd	Monmouth,South Wales East

Monmouth (Welsh:Mynwy) was acounty constituency^{[n 1]} of theHouse of Commons of theParliament of the United Kingdom (atWestminster). The seat was created for the1918 general election. From2005 until 2024 theMember of Parliament (MP) wasDavid Davies of theConservative Party.^{[n 2]}

TheMonmouth Senedd constituency was created in 1999 with the same boundaries as the Westminster constituency. These covered a large area, omitting the mainly urban areas ofBlaenau Gwent in the west andNewport, Wales in the south.

The constituency was abolished as part of the2023 review of Westminster constituencies and under theJune 2023 final recommendations of theBoundary Commission for Wales for the2024 general election. Its wards were split betweenMonmouthshire andTorfaen.^[2]

The constituency was considered a safe seat of theConservative Party although the seat has been won by theLabour Party in three general elections – in addition to the1991 by-election.

The last MP for Monmouth was the ConservativeDavid T. C. Davies, elected in 2005 and a former member for the Senedd seat of the same name. To avoid confusion with the Yorkshire ConservativeDavid Davis, he is named in Hansard as "David T. C. Davies".

Map of boundaries 1983–2024

The constituency was one of eight covering thepreserved county ofGwent. The other seven wereBlaenau Gwent,Caerphilly,Islwyn,Merthyr Tydfil and Rhymney,Newport East,Newport West andTorfaen. Merthyr Tydfil and Rhymney, however, straddles the boundary with the preserved county ofMid Glamorgan. It covered most of the local authority ofMonmouthshire, with the main towns beingChepstow,Monmouth andAbergavenny.

For the2010 general election, there were no changes to the boundaries of the Monmouth constituency stemming from the Fifth Review of theBoundary Commission for Wales.^[3] Likewise there were no boundary changes in1997.

As first used in the 1918 general election, the constituency was a creation of theRepresentation of the People Act 1918 as one of six constituencies covering thecounty of Monmouth. Prior to the 1918 election the county had been covered, nominally, by the county constituencies ofNorthern Monmouthshire,Southern Monmouthshire, andWestern Monmouthshire, and theMonmouth Boroughsborough constituency. By 1918, however, administrative county boundaries were out of alignment with constituency boundaries. The new constituency boundaries took account of the newlocal government boundaries.

The other Monmouthshire constituencies defined by the 1918 legislation were the county constituencies ofAbertillery,Bedwellty,Ebbw Vale andPontypool, and theborough constituency ofNewport. This general pattern was maintained until 1983, nine years after the administrative county they were based on had been abolished, but there were some boundary changes during the 1918 to 1983 period.

In 1918 the Monmouth constituency was defined as consisting of themunicipal boroughs ofAbergavenny, andMonmouth, theurban districts of Caerleon, Chepstow, and Usk, therural districts of Abergavenny, Chepstow, Magor, Monmouth, Cwmbran and Pontypool, and part of the rural district of St Mellons.^[4] The same boundaries were used for thegeneral elections of1922,1923,1924,1929,1931,1935 and1945.

New boundaries, created by theHouse of Commons (Redistribution of Seats) Act 1949, were used for the1950 general election, and the Monmouth constituency was defined as consisting of the municipal boroughs of Abergavenny and Monmouth, the urban districts of Caerleon, Chepstow, Cwmbran and Usk, and the rural districts of Abergavenny, Chepstow,Magor and St Mellons, Monmouth, and Pontypool.^[4]

For the1951 general election, there was some alteration to the boundaries of rural district of Magor and St Mellons.^[4]

The constituency was redefined again for the1955 general election, taking account of new local government boundaries. The result was the same list of boroughs and districts as for the 1951 election.^[4] 1951 boundaries were used also in the general elections of1959,1964,1966,1970,February 1974,October 1974 and1979.

In 1974, under theLocal Government Act 1972, the local government county of Monmouth was abolished. For the1983 general election, new constituency boundaries were drawn, taking account of new local government boundaries.

The following list does not include MPs who actually representedMonmouth Boroughs:

Of the 75 rejected ballots:

• 54 were either unmarked or it was uncertain who the vote was for.^[25]
• 20 voted for more than one candidate.^[25]
• 1 had writing or mark by which the voter could be identified.^[25]

Of the 104 rejected ballots:

• 70 were either unmarked or it was uncertain who the vote was for.^[28]
• 30 voted for more than one candidate.^[28]
• 4 had writing or mark by which the voter could be identified.^[28]

Of the 64 rejected ballots:

• 57 were either unmarked or it was uncertain who the vote was for.^[30]
• 7 voted for more than one candidate.^[30]

Of the 136 rejected ballots:

• 112 were either unmarked or it was uncertain who the vote was for.^[33]
• 24 voted for more than one candidate.^[33]

• Monmouth (Senedd constituency)
• List of parliamentary constituencies in Gwent
• List of UK Parliament constituencies in Wales

• Iain Dale, ed. (2003).The Times House of Commons 1929, 1931, 1935. Politico's (reprint).ISBN 1-84275-033-X.
• The Times House of Commons 1945. 1945.{{cite book}}:|work= ignored (help)
• Craig, F. W. S. (1983) [1969].British parliamentary election results 1918-1949 (3rd ed.). Chichester: Parliamentary Research Services.ISBN 0-900178-06-X.

• Politics Resources (Election results from 1922 onwards)
• Electoral Calculus (Election results from 1955 onwards)
• 2017 Election House of Commons Library 2017 Election report
• A Vision Of Britain Through Time (Constituency elector numbers)
• Monmouth UK Parliament constituency (boundaries April 1997 – April 2010) atMapIt UK
• Monmouth UK Parliament constituency (boundaries April 2010 – May 2024) atMapIt UK

51°46′05″N2°48′40″W / 51.768°N 2.811°W /51.768; -2.811

• Historic parliamentary constituencies in South Wales
• Constituencies of the Parliament of the United Kingdom established in 1918
• Constituencies of the Parliament of the United Kingdom disestablished in 2024
• Monmouth, Wales

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