Caerphilly (UK Parliament constituency)

{{maplink|raw={{Wikipedia:Map data/Caerphilly (UK Parliament constituency) 2010}}|frame=yes|frame-height=175|text=Map of boundaries 2010–2024|frame-align=left|frame-width=175}}

The Caerphilly constituency covers roughly the southern and eastern half of Caerphilly district, the part of the district historically located in Glamorgan. In the northwestern portion of the constituency are communities such as Hengoed and Ystrad Mynach, extending in a southeasterly direction through Caerphilly and Llanbradach to the rural outcrops bordering Cardiff.

2010–2024: The Caerphilly County Borough wards of Aber Valley, Aberbargoed and Bargoed, Bedwas and Trethomas, Gilfach, Hengoed, Llanbradach, Machen and Rudry, Morgan Jones, Nelson, Penyrheol, St Cattwg, St Martins, Van, and Ystrad Mynach.

2024–present: At the 2023 review of Westminster constituencies and under the June 2023 final recommendations of the Boundary Commission for Wales for the 2024 general election, the constituency retained its name but its boundaries altered. Four wards were taken from the abolished Islwyn constituency.{{Cite book |url=https://bcomm-wales.gov.uk/sites/bcomm/files/review/E02859434_Boundary%20Commission%20Wales%202023_English_Web%20Accessible_V03.pdf |title=2023 Review of Parliamentary Constituencies – The 2023 Review of Parliamentary Constituencies in Wales |date=28 June 2023 |publisher=Boundary Commission for Wales}} The constituency was defined as being composed of the following wards of the County Borough of Caerphilly, as they existed on 1 December 2020:{{Cite web |title=The Parliamentary Constituencies Order 2023 |url=https://www.legislation.gov.uk/uksi/2023/1230/made |at=Schedule 4 (Wales)}}

• Aber Valley; Bedwas, Trethomas and Machen; Hengoed; Llanbradach; Maesycwmmer; Morgan Jones; Nelson; Pengam; Penyrheol; Pontllanfraith; St. Cattwg; St. James; St. Martins; Ynysddu; and Ystrad Mynach.

Following a local government boundary review which came into effect in May 2022,{{Cite web |title=The County Borough of Caerphilly (Electoral Arrangements) Order 2021 |url=https://www.legislation.gov.uk/wsi/2021/1217/schedule}} the constituency now comprises the following wards of the County Borough of Caerphilly from the 2024 general election:{{Cite web |title=Election Maps |url=https://www.ordnancesurvey.co.uk/election-maps/gb/ |access-date=2025-03-09 |website=www.ordnancesurvey.co.uk}}

• Aber Valley; Bedwas and Trethomas; Cefn Fforest and Pengam (part); Hengoed; Llanbradach; Machen and Rudry; Maesycwmmer; Morgan Jones; Nelson; Penyrheol; Pontllanfraith; St Cattwg; St Martins; Van; Ynysddu; and Ystrad Mynach.

{{Election box begin | title=General election 1918: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Alfred Onions

|votes = 11,496

|percentage = 54.8

|change = N/A

}}

{{Election box candidate with party link|

|party = Liberal Party (UK)

|candidate = William Rees Edmunds

|votes = 9,482

|percentage = 45.2

|change = N/A

}}

{{Election box majority|

|votes = 2,014

|percentage = 9.6

|change = N/A

}}

{{Election box turnout|

|votes = 20,978

|percentage = 64.0

|change = N/A

}}

{{Election box registered electors|

|reg. electors = 32,790

}}

{{Election box new seat win|

|winner = Welsh Labour

}}

{{Election box end}}

{{Election box begin|title= 1921 Caerphilly by-election}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Morgan Jones

|votes = 13,699

|percentage = 54.2

|change = -0.6

}}

{{Election box candidate with party link|

|party = Liberal Party (UK)

|candidate = William Rees Edmunds

|votes = 8,958

|percentage = 35.5

|change = -9.7

}}

{{Election box candidate with party link|

|party = Communist Party of Great Britain

|candidate = Bob Stewart

|votes = 2,592

|percentage = 10.3

|change = N/A

}}

{{Election box majority|

|votes = 4,741

|percentage = 18.7

|change = +9.1

}}

{{Election box turnout|

|votes = 25,249

|percentage = 73.2

|change = +9.2

}}

{{Election box registered electors|

|reg. electors = 34,511

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = +4.5

}}

{{Election box end}}

{{Election box begin|title=General election 1922: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Morgan Jones

|votes = 16,082

|percentage = 57.2

|change = +2.4

}}

{{Election box candidate with party link|

|party = Unionist Party (UK)

|candidate = Alan McLean

|votes = 12,057

|percentage = 42.8

|change = N/A

}}

{{Election box majority|

|votes = 4,025

|percentage = 14.4

|change = +4.8

}}

{{Election box turnout|

|votes = 28,139

|percentage = 78.6

|change = +5.4

}}

{{Election box registered electors|

|reg. electors = 35,795

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1923: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Morgan Jones

|votes = 16,535

|percentage = 58.7

|change = +1.5

}}

{{Election box candidate with party link|

|party = Unionist Party (UK)

|candidate = Gwilym Rowlands

|votes = 6,493

|percentage = 23.0

|change = -19.8

}}

{{Election box candidate with party link|

|party = Liberal Party (UK)

|candidate = Samuel Roberts Jenkins

|votes = 5,152

|percentage = 18.3

|change = N/A

}}

{{Election box majority|

|votes = 10,042

|percentage = 35.7

|change = +21.3

}}

{{Election box turnout|

|votes = 28,180

|percentage = 77.0

|change = -1.6

}}

{{Election box registered electors|

|reg. electors = 36,592

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = +10.6

}}

{{Election box end}}

{{Election box begin|title=General election 1924: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Morgan Jones

|votes = 17,723

|percentage = 59.0

|change = +0.3

}}

{{Election box candidate with party link|

|party = Unionist Party (UK)

|candidate = Gwilym Rowlands

|votes = 12,293

|percentage = 41.0

|change = +18.0

}}

{{Election box majority|

|votes = 5,430

|percentage = 18.0

|change = -17.7

}}

{{Election box turnout|

|votes = 29,996

|percentage = 79.3

|change = +2.3

}}

{{Election box registered electors|

|reg. electors = 37,868

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = -8.8

}}

{{Election box end}}

{{Election box begin|title=General election 1929: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Morgan Jones

|votes = 21,248

|percentage = 57.9

|change = -1.1

}}

{{Election box candidate with party link|

|party = Liberal Party (UK)

|candidate = Alice Grace Roberts

|votes = 8,190

|percentage = 22.4

|change = N/A

}}

{{Election box candidate with party link|

|party = Unionist Party (UK)

|candidate = Owen Temple-Morris

|votes = 6,357

|percentage = 17.4

|change = -23.6

}}

{{Election box candidate with party link|

|party = Communist Party of Great Britain

|candidate = J R Wilson

|votes = 829

|percentage = 2.3

|change = N/A

}}

{{Election box majority|

|votes = 13,058

|percentage = 35.5

|change = +17.5

}}

{{Election box turnout|

|votes = 36,624

|percentage = 81.1

|change = +1.8

}}

{{Election box registered electors|

|reg. electors = 45,173

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1931: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Morgan Jones

|votes = 23,061

|percentage = 67.6

|change = +9.7

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Catherine Bowen-Davies

|votes = 11,044

|percentage = 32.4

|change = +15.0

}}

{{Election box majority|

|votes = 12,017

|percentage = 35.2

|change = -0.3

}}

{{Election box turnout|

|votes = 34,105

|percentage = 76.6

|change = -4.5

}}

{{Election box registered electors|

|reg. electors = 44,509

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1935: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Morgan Jones

|votes = 24,846

|percentage = 76.2

|change = +8.6

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Nesta Jessie Stoneham

|votes = 7,738

|percentage = 23.8

|change = -8.6

}}

{{Election box majority|

|votes = 17,108

|percentage = 52.6

|change = +17.4

}}

{{Election box turnout|

|votes = 32,584

|percentage = 72.3

|change = -4.3

}}

{{Election box registered electors|

|reg. electors = 45,057

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=1939 Caerphilly by-election}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ness Edwards

|votes = 19,847

|percentage = 68.0

|change = -8.2

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Ronald Bell

|votes = 9,349

|percentage = 32.0

|change = +8.2

}}

{{Election box majority|

|votes = 10,498

|percentage = 36.0

|change = -16.6

}}

{{Election box turnout|

|votes = 29,196

|percentage = 68.4

|change = -3.9

}}

{{Election box registered electors|

|reg. electors = 42,678

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin |title=General election 1945: CaerphillyCraig, F. W. S. (1969). British parliamentary election results 1918–1949 (1 ed.). Glasgow: Political Reference Publications. {{ISBN|0-900178-019}}. Page 557}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ness Edwards

|votes = 29,158

|percentage = 80.2

|change = +4.0

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = John Frederick Manuel de Courcy

|votes = 7,189

|percentage = 19.8

|change = −4.0

}}

{{Election box majority|

|votes = 21,969

|percentage = 60.4

|change = +7.8

}}

{{Election box turnout|

|votes = 36,347

|percentage = 77.2

|change = +4.9

}}

{{Election box registered electors|

|reg. electors = 47,078

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1950: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ness Edwards

|votes = 30,270

|percentage = 77.5

|change = −2.7

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = K J Lloyd

|votes = 8,771

|percentage = 22.5

|change = +2.7

}}

{{Election box majority|

|votes = 21,499

|percentage = 55.0

|change = −5.4

}}

{{Election box turnout|

|votes = 39,041

|percentage = 84.3

|change = +7.1

}}

{{Election box registered electors|

|reg. electors = 46,321

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1951: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ness Edwards

|votes = 30,523

|percentage = 77.1

|change = −0.4

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Kenneth Gordon Knee

|votes = 9,041

|percentage = 22.9

|change = +0.4

}}

{{Election box majority|

|votes = 21,482

|percentage = 54.2

|change = −0.8

}}

{{Election box turnout|

|votes = 39,564

|percentage = 84.4

|change = +0.1

}}

{{Election box registered electors|

|reg. electors = 46,893

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1955: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ness Edwards

|votes = 27,852

|percentage = 75.2

|change = −1.9

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = John H. Davies

|votes = 9,180

|percentage = 24.8

|change = +1.9

}}

{{Election box majority|

|votes = 18,672

|percentage = 50.4

|change = −3.8

}}

{{Election box turnout|

|votes = 37,032

|percentage = 78.6

|change = −5.8

}}

{{Election box registered electors|

|reg. electors = 47,131

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1959: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ness Edwards

|votes = 28,154

|percentage = 72.7

|change = −2.5

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = W Russell Lewis

|votes = 7,181

|percentage = 18.5

|change = −6.3

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = John D. A. Howell

|votes = 3,420

|percentage = 8.8

|change = N/A

}}

{{Election box majority|

|votes = 20,973

|percentage = 54.2

|change = +3.8

}}

{{Election box turnout|

|votes = 38,735

|percentage = 83.0

|change = +4.4

}}

{{Election box registered electors|

|reg. electors = 46,671

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1964: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ness Edwards

|votes = 26,001

|percentage = 72.1

|change = −0.6

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Ronald J Maddocks

|votes = 6,086

|percentage = 16.9

|change = −1.6

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Phil Williams

|votes = 3,956

|percentage = 11.0

|change = +2.2

}}

{{Election box majority|

|votes = 19,915

|percentage = 55.2

|change = +1.0

}}

{{Election box turnout|

|votes = 36,043

|percentage = 78.4

|change = −4.6

}}

{{Election box registered electors|

|reg. electors = 45,969

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin | title=General election 1966: Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ness Edwards

|votes = 26,330

|percentage = 74.3

|change = +2.2

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Ronald J. Maddocks

|votes = 5,182

|percentage = 14.6

|change = −2.3

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = John D. A. Howell

|votes = 3,949

|percentage = 11.1

|change = +0.1

}}

{{Election box majority|

|votes = 21,148

|percentage = 59.7

|change = +4.5

}}

{{Election box turnout|

|votes = 35,461

|percentage = 76.8

|change = −1.6

}}

{{Election box registered electors|

|reg. electors = 46,180

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title= 1968 Caerphilly by-election{{cite web|url=http://www.by-elections.co.uk/68.html|archive-url=https://web.archive.org/web/20120325095551/http://www.by-elections.co.uk/68.html|title=1968 By Election Results|archive-date=25 March 2012|url-status=dead|publisher=British Elections Ephemera Archive|access-date=21 August 2015}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Alfred Evans

|votes = 16,148

|percentage = 45.7

|change = -28.6

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Phil Williams

|votes = 14,274

|percentage = 40.4

|change = +29.3

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Robert Williams

|votes = 3,687

|percentage = 10.4

|change = -4.2

}}

{{Election box candidate with party link|

|party = Liberal Party (UK)

|candidate = Peter Sadler

|votes = 1,257

|percentage = 3.5

|change = N/A

}}

{{Election box majority|

|votes = 1,874

|percentage = 5.3

|change = -54.4

}}

{{Election box turnout|

|votes = 35,366

|percentage = 75.9

|change = -0.9

}}

{{Election box registered electors|

|reg. electors = 46,578

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1970: CaerphillyCraig, F. W. S. (1971). British parliamentary election results 1950–1970 (1 ed.). Chichester: Political Reference Publications. {{ISBN|9780900178023}}. Page 578}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Alfred Evans

|votes = 24,972

|percentage = 61.8

|change = −12.5

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Phil Williams

|votes = 11,505

|percentage = 28.5

|change = +17.4

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Peter Price

|votes = 3,917

|percentage = 9.7

|change = −4.9

}}

{{Election box majority|

|votes = 13,467

|percentage = 33.3

|change = -26.4

}}

{{Election box turnout|

|votes = 40,394

|percentage = 78.1

|change = +1.3

}}

{{Election box registered electors|

|reg. electors = 51,741

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election February 1974: Caerphilly{{cite web|url=http://www.politicsresources.net/area/uk/ge74a/i04.htm|title=Politics Resources|date=28 February 1974|work=Election February 1974|publisher=Politics Resources|access-date=2021-02-02|archive-url=https://web.archive.org/web/20110811173038/http://www.politicsresources.net/area/uk/ge74a/i04.htm|archive-date=11 August 2011|url-status=dead}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Alfred Evans

|votes = 24,838

|percentage = 57.2

|change = −4.6

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Phil Williams

|votes = 11,956

|percentage = 27.5

|change = −1.0

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Roger Everest

|votes = 5,912

|percentage = 13.6

|change = +3.9

}}

{{Election box candidate with party link

|party = Independent (politician)

|candidate = D H Bevan

|votes = 711

|percentage = 1.6

|change = N/A

}}

{{Election box majority|

|votes = 12,882

|percentage = 29.7

|change = -3.6

}}

{{Election box turnout|

|votes = 40,394

|percentage = 77.5

|change = −0.6

}}

{{Election box registered electors|

|reg. electors = 56,013

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election October 1974: Caerphilly{{cite web|url=http://www.politicsresources.net/area/uk/ge74b/i04.htm|title=Politics Resources|date=10 October 1974|work=Election October 1974|publisher=Politics Resources|access-date=2021-02-02|archive-url=https://web.archive.org/web/20110811155241/http://www.politicsresources.net/area/uk/ge74b/i04.htm|archive-date=11 August 2011|url-status=dead}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Alfred Evans

|votes = 24,161

|percentage = 56.6

|change = −0.6

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Phil Williams

|votes = 10,452

|percentage = 24.5

|change = −3.0

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Den Dover

|votes = 4,897

|percentage = 11.5

|change = −2.1

}}

{{Election box candidate with party link|

|party = Liberal Party (UK)

|candidate = N H Lewis

|votes = 3,184

|percentage = 7.4

|change = N/A

}}

{{Election box majority|

|votes = 13,709

|percentage = 32.1

|change = +2.4

}}

{{Election box turnout|

|votes = 42,694

|percentage = 75.6

|change = −1.9

}}

{{Election box registered electors|

|reg. electors = 56,462

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1979: Caerphilly{{cite web|url=http://www.politicsresources.net/area/uk/ge79/i04.htm|title=Politics Resources|date=3 May 1979|work=Election 1979|publisher=Politics Resources|access-date=2021-02-02|archive-url=https://web.archive.org/web/20110811162703/http://www.politicsresources.net/area/uk/ge79/i04.htm|archive-date=11 August 2011|url-status=dead}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ednyfed Davies

|votes = 27,280

|percentage = 58.8

|change = +2.2

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = John Ranelagh

|votes = 8,783

|percentage = 18.9

|change = +7.4

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Phil Williams

|votes = 6,931

|percentage = 15.0

|change = −9.5

}}

{{Election box candidate with party link|

|party = Liberal Party (UK)

|candidate = N Jones

|votes = 3,430

|percentage = 7.3

|change = −0.1

}}

{{Election box majority|

|votes = 18,497

|percentage = 39.9

|change = +7.8

}}

{{Election box turnout|

|votes = 46,424

|percentage = 78.8

|change = +3.2

}}

{{Election box registered electors|

|reg. electors = 58,908

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1983: Caerphilly{{cite web|title=Election Data 1983|url=http://www.electoralcalculus.co.uk/electdata_1983.txt|publisher=Electoral Calculus|access-date=18 October 2015|archive-url=https://web.archive.org/web/20111015054231/http://www.electoralcalculus.co.uk/electdata_1983.txt|archive-date=15 October 2011}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ron Davies

|votes = 21,570

|percentage = 45.6

|change = −13.2

}}

{{Election box candidate with party link|

|party = Liberal Party (UK)

|candidate = Anthony Lambert

|votes = 10,017

|percentage = 21.2

|change = +13.9

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Charles Welby

|votes = 9,295

|percentage = 19.6

|change = +0.7

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 6,414

|percentage = 13.6

|change = −1.4

}}

{{Election box majority|

|votes = 11,553

|percentage = 24.4

|change = −15.5

}}

{{Election box turnout|

|votes = 47,296

|percentage = 74.5

|change = −4.3

}}

{{Election box registered electors|

|reg. electors = 63,479

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1987: Caerphilly{{cite web|title=Election Data 1987|url=http://www.electoralcalculus.co.uk/electdata_1987.txt|publisher=Electoral Calculus|access-date=18 October 2015|archive-url=https://web.archive.org/web/20111015054243/http://www.electoralcalculus.co.uk/electdata_1987.txt|archive-date=15 October 2011}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ron Davies

|votes = 28,698

|percentage = 58.4

|change = +12.8

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Michael Powell

|votes = 9,531

|percentage = 19.4

|change = −0.2

}}

{{Election box candidate with party link|

|party = Liberal Party (UK)

|candidate = Michael Butlin

|votes = 6,923

|percentage = 14.1

|change = −7.1

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 3,955

|percentage = 8.1

|change = −5.5

}}

{{Election box majority|

|votes = 19,167

|percentage = 39.0

|change = +14.6

}}

{{Election box turnout|

|votes = 49,107

|percentage = 76.6

|change = +2.1

}}

{{Election box registered electors|

|reg. electors = 64,154

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing =

}}

{{Election box end}}

{{Election box begin|title=General election 1992: Caerphilly{{cite web|title=Election Data 1992|url=http://www.electoralcalculus.co.uk/electdata_1992ob.txt|publisher=Electoral Calculus|access-date=18 October 2015|archive-url=https://web.archive.org/web/20111015054418/http://www.electoralcalculus.co.uk/electdata_1992ob.txt|archive-date=15 October 2011}}{{cite web|url=http://www.politicsresources.net/area/uk/ge92/ge92index.htm|title=Politics Resources|date=9 April 1992|work=Election 1992|publisher=Politics Resources|access-date=6 December 2010|archive-url=https://web.archive.org/web/20110724020412/http://www.politicsresources.net/area/uk/ge92/ge92index.htm|archive-date=24 July 2011|url-status=dead}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ron Davies

|votes = 31,713

|percentage = 63.7

|change = +5.3

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Howard L. Philpott

|votes = 9,041

|percentage = 18.1

|change = −1.3

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 4,821

|percentage = 9.7

|change = +1.6

}}

{{Election box candidate with party link|

|party = Welsh Liberal Democrats

|candidate = Stan W. Wilson

|votes = 4,247

|percentage = 8.5

|change = −5.6

}}

{{Election box majority|

|votes = 22,672

|percentage = 45.6

|change = +6.6

}}

{{Election box turnout|

|votes = 49,822

|percentage = 77.2

|change = +0.6

}}

{{Election box registered electors|

|reg. electors = 64,529

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = +3.2

}}

{{Election box end}}

{{Election box begin|title=General election 1997: Caerphilly{{cite web|title=Election Data 1997|url=http://www.electoralcalculus.co.uk/electdata_1997.txt|publisher=Electoral Calculus|access-date=18 October 2015|archive-url=https://web.archive.org/web/20111015054424/http://www.electoralcalculus.co.uk/electdata_1997.txt|archive-date=15 October 2011}}{{cite web|url=http://news.bbc.co.uk/hi/english/static/vote2001/results_constituencies/constituencies/112.stm|title=BBC NEWS>VOTE 2001>Results and Constituencies>Caerphilly|date=1 May 1997|work=Vote 2001|publisher=BBC News|access-date=2011-01-12}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Ron Davies

|votes = 30,697

|percentage = 67.3

|change = +3.6

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Rhodri Harris

|votes = 4,858

|percentage = 10.7

|change = -7.4

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 4,383

|percentage = 9.7

|change = ±0.0

}}

{{Election box candidate with party link|

|party = Welsh Liberal Democrats

|candidate = Tony D. Ferguson

|votes = 3,724

|percentage = 8.2

|change = -0.3

}}

{{Election box candidate with party link|

|party = Referendum Party

|candidate = Mark E. Morgan

|votes = 1,337

|percentage = 3.0

|change = N/A

}}

{{Election box candidate with party link|

|party = ProLife Alliance

|candidate = Catherine Williams

|votes = 270

|percentage = 0.6

|change = N/A

}}

{{Election box majority|

|votes = 25,839

|percentage = 56.6

|change = +11.0

}}

{{Election box turnout|

|votes = 45,269

|percentage = 70.1

|change = -7.1

}}

{{Election box registered electors|

|reg. electors = 64,621

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = +5.5

}}

{{Election box end}}

{{Election box begin|title=General election 2001: Caerphilly{{cite web|title=Election Data 2001|url=http://www.electoralcalculus.co.uk/electdata_2001ob.txt|publisher=Electoral Calculus|access-date=18 October 2015|archive-url=https://web.archive.org/web/20111015054450/http://www.electoralcalculus.co.uk/electdata_2001ob.txt|archive-date=15 October 2011}}{{cite web|url=http://news.bbc.co.uk/hi/english/static/vote2001/results_constituencies/constituencies/112.stm|title=BBC NEWS > Caerphilly|publisher=BBC News |work=Vote 2001 |date=7 June 2001|access-date=2011-01-22}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Wayne David

|votes = 22,597

|percentage = 58.2

|change = -9.1

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 8,172

|percentage = 21.0

|change = +11.3

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = David Simmonds

|votes = 4,415

|percentage = 11.4

|change = +0.7

}}

{{Election box candidate with party link|

|party = Welsh Liberal Democrats

|candidate = Rob Roffe

|votes = 3,649

|percentage = 9.4

|change = +1.2

}}

{{Election box majority|

|votes = 14,425

|percentage = 37.2

|change = -18.4

}}

{{Election box turnout|

|votes = 38,833

|percentage = 57.7

|change = -12.4

}}

{{Election box registered electors|

|reg. electors = 67,300

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = -10.5

}}

{{Election box end}}

{{Election box begin|title=General election 2005: Caerphilly{{cite web|title=Election Data 2005|url=http://www.electoralcalculus.co.uk/electdata_2005ob.txt|publisher=Electoral Calculus|access-date=18 October 2015|archive-url=https://web.archive.org/web/20111015054249/http://www.electoralcalculus.co.uk/electdata_2005ob.txt|archive-date=15 October 2011}}{{Cite web|url=http://news.bbc.co.uk/2/shared/vote2005/html/112.stm|title=Caerphilly parliamentary constituency – Election 2005|via=www.bbc.co.uk}}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Wayne David

|votes = 22,190

|percentage = 56.6

|change = -1.6

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 6,831

|percentage = 17.4

|change = -3.6

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Stephen Watson

|votes = 5,711

|percentage = 14.6

|change = +3.2

}}

{{Election box candidate with party link|

|party = Welsh Liberal Democrats

|candidate = Ashgar Ali

|votes = 3,861

|percentage = 9.8

|change = +0.4

}}

{{Election box candidate with party link|

|party = Forward Wales

|candidate = Rachel Ball

|votes = 636

|percentage = 1.6

|change = N/A

}}

{{Election box majority|

|votes = 15,359

|percentage = 39.2

|change = +2.0

}}

{{Election box turnout|

|votes = 39,229

|percentage = 58.6

|change = +0.9

}}

{{Election box registered electors|

|reg. electors = 66,162

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = +1.0

}}

{{Election box end}}

{{Election box begin | title= General election 2010: Caerphilly{{cite web|title=Election Data 2010|url=http://www.electoralcalculus.co.uk/electdata_2010.txt|publisher=Electoral Calculus|access-date=17 October 2015|archive-url=https://web.archive.org/web/20130726162034/http://www.electoralcalculus.co.uk/electdata_2010.txt|archive-date=26 July 2013}}[http://news.bbc.co.uk/1/shared/election2010/results/constituency/w36.stm Caerphilly] BBC Election – Caerphilly}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Wayne David

|votes = 17,377

|percentage = 44.9

|change = −10.5

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Maria Caulfield

|votes = 6,622

|percentage = 17.1

|change = +2.4

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 6,460

|percentage = 16.7

|change = −1.4

}}

{{Election box candidate with party link|

|party = Welsh Liberal Democrats

|candidate = Kay David

|votes = 5,688

|percentage = 14.7

|change = +4.7

}}

{{Election box candidate with party link|

|party = British National Party

|candidate = Laurence Reid

|votes = 1,635

|percentage = 4.2

|change = N/A

}}

{{Election box candidate with party link|

|party = United Kingdom Independence Party

|candidate = Tony Jenkins

|votes = 910

|percentage = 2.4

|change = N/A

}}

{{Election box majority|

|votes = 10,755

|percentage = 27.8

|change = −11.4

}}

{{Election box turnout|

|votes = 38,692

|percentage = 62.3

|change = +3.7

}}

{{Election box registered electors|

|reg. electors = 62,122

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = −6.5

}}

{{Election box end}}

{{Election box begin|title= General election 2015: Caerphilly{{cite web|title=Election Data 2015|url=http://www.electoralcalculus.co.uk/electdata_2015.txt|publisher=Electoral Calculus|access-date=17 October 2015|archive-url=https://web.archive.org/web/20151017112223/http://www.electoralcalculus.co.uk/electdata_2015.txt|archive-date=17 October 2015}}{{cite web|title=Caerphilly result|url=http://www.caerphilly.gov.uk/My-Council/Voting-and-elections/Election-Results/General-Election-2015-results/General-Election-2015-results-for-Caerphilly-const|website=General Election 2015 – Results for Caerphilly constituency|publisher=Caerphilly County Borough Council|access-date=21 September 2015}}{{cite news |url=https://www.bbc.co.uk/news/politics/constituencies/W07000076#election2015-logo |department=Election 2015 |title=Caerphilly Parliamentary constituency |work=BBC News |access-date=5 May 2015 }}}}

{{Election box winning candidate with party link|

|party = Welsh Labour

|candidate = Wayne David{{Cite web|url=http://electionresults.blogspot.com/2013/04/caerphilly-2015.html|title=UK ELECTION RESULTS: CAERPHILLY 2015|website=UK Election Results|publisher=Election Blog|access-date=9 June 2021}}

|votes = 17,864

|percentage = 44.3

|change = −0.6

}}

{{Election box candidate with party link|

|party = UK Independence Party

|candidate = Sam Gould{{Cite web|url=http://www.walesonline.co.uk/news/local-news/ukip-set-up-shop-merthyr-8305247|title=Ukip set up shop on Merthyr High Street|first=Liam|last=Moffett|date=December 17, 2014|website=walesonline}}

|votes = 7,791

|percentage = 19.3

|change = +16.9

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Leo Docherty

|votes = 6,683

|percentage = 16.6

|change = −0.5

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Beci Newton

|votes = 5,895

|percentage = 14.6

|change = −2.1

}}

{{Election box candidate with party link|

|party = Green Party of England and Wales

|candidate = Katy Beddoe{{cite web|url=https://caerphilly.observer/news/948560/green-party-reveal-caerphilly-and-islwyn-2015-general-election-candidates/|title=Green Party reveal Caerphilly and Islwyn 2015 General Election candidates|date=December 1, 2014}}

|votes = 937

|percentage = 2.3

|change = N/A

}}

{{Election box candidate with party link|

|party = Welsh Liberal Democrats

|candidate = Aladdin Ayesh

|votes = 935

|percentage = 2.3

|change = −12.4

}}

{{Election box candidate with party link|

|party = Trade Unionist and Socialist Coalition

|candidate = Rachel Ball

|votes = 178

|percentage = 0.4

|change = N/A

}}

{{Election box rejected

|votes = 81

|percentage =

|change =

}}

{{Election box majority|

|votes = 10,073

|percentage = 25.0

|change = −2.8

}}

{{Election box turnout|

|votes = 40,283

|percentage = 63.3

|change = +1.0

}}

{{Election box registered electors|

|reg. electors = 63,603

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = −8.7

}}

{{Election box end}}

Of the 81 rejected ballots:

• 59 were either unmarked or it was uncertain who the vote was for.
• 22 voted for more than one candidate.

{{Election box begin|title=General election 2017: Caerphilly{{cite web|title=Statement of Persons Nominated & Notice of Poll|url=http://www.caerphilly.gov.uk/CaerphillyDocs/Elections/8_June_Election/CaerphillyNoticePollPollingStationLocations.aspx|publisher=Caerphilly County Borough Council|access-date=25 May 2017}}{{cite news|title=Caerphilly Parliamentary constituency|url=https://www.bbc.com/news/politics/constituencies/W07000076#election2017-logo|website=Election 2017 Results|publisher=BBC|access-date=8 June 2017}}}}

{{Election box winning candidate with party link

|party = Welsh Labour

|candidate = Wayne David

|votes = 22,491

|percentage = 54.5

|change = +10.2

}}

{{Election box candidate with party link

|party = Welsh Conservatives

|candidate = Jane Pratt

|votes = 10,413

|percentage = 25.2

|change = +8.6

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 5,962

|percentage = 14.4

|change = −0.2

}}

{{Election box candidate with party link|

|party = UK Independence Party

|candidate = Liz Wilks

|votes = 1,259

|percentage = 3.0

|change = −16.3

}}

{{Election box candidate with party link

|party = Welsh Liberal Democrats

|candidate = Kay David

|votes = 725

|percentage = 1.8

|change = −0.5

}}

{{Election box candidate with party link

|party = Green Party of England and Wales

|candidate = Andrew Creak

|votes = 447

|percentage = 1.1

|change = −1.2

}}

{{Election box majority|

|votes = 12,078

|percentage = 29.3

|change = +4.3

}}

{{Election box turnout|

|votes = 41,297

|percentage = 64.1

|change = +0.8

}}

{{Election box registered electors|

|reg. electors = 64,381

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = +0.7

}}

{{Election box end}}

{{Election box begin|title=General election 2019: Caerphilly{{cite news|url=https://www.bbc.com/news/politics/constituencies/W07000076|title=Caerphilly parliamentary constituency – Election 2019|work=BBC News|access-date=16 December 2019}}{{cite web |title=Election-Results/General-Election-2019|url=https://www.caerphilly.gov.uk/CaerphillyDocs/Elections/General-Election-2019/Caerphilly_2019_Result.aspx |website=Caerphilly Council |access-date=22 December 2019}}}}

{{Election box winning candidate with party link

|party = Welsh Labour

|candidate = Wayne David

|votes = 18,018

|percentage = 44.9

|change = −9.6

}}

{{Election box candidate with party link

|party = Welsh Conservatives

|candidate = Jane Pratt

|votes = 11,185

|percentage = 27.9

|change = +2.7

}}

{{Election box candidate with party link|

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 6,424

|percentage = 16.0

|change = +1.6

}}

{{Election box candidate with party link

|party = Brexit Party

|candidate = Nathan Gill

|votes = 4,490

|percentage = 11.2

|change = N/A

}}

{{Election box rejected

|votes = 160

|percentage =

|change =

}}

{{Election box majority

|votes = 6,833

|percentage = 17.0

|change = −12.3

}}

{{Election box turnout

|votes = 40,117

|percentage = 65.3

|change = −2.8

}}

{{Election box registered electors|

|reg. electors = 63,166

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = −6.1

}}

{{Election box end}}

Of the 160 rejected ballots:

• 132 were either unmarked or it was uncertain who the vote was for.
• 28 voted for more than one candidate.

{{Election box begin|title=General election 2024: Caerphilly{{Cite news |title=Caerphilly – General election results 2024 |url=https://www.bbc.com/news/election/2024/uk/constituencies/W07000088 |access-date=2024-07-05 |work=BBC News |language=en-GB}}|}}

{{Election box winning candidate with party link

|party = Labour and Co-operative Party

|candidate = Chris Evans

|votes = 14,538

|percentage = 38.0

|change = -5.9

}}

{{Election box candidate with party link

|party = Plaid Cymru

|candidate = Lindsay Whittle

|votes = 8,119

|percentage = 21.2

|change = +6.5

}}

{{Election box candidate with party link

|party = Reform UK

|candidate = Joshua Seungkyun Kim

|votes = 7,754

|percentage = 20.3

|change = +8.6

}}

{{Election box candidate with party link

|party = Welsh Conservatives

|candidate = Brandon Gorman

|votes = 4,385

|percentage = 11.5

|change = -17.1

}}

{{Election box candidate with party link

|party = Welsh Liberal Democrats

|candidate = Steve Aicheler

|votes = 1,788

|percentage = 4.7

|change = +4.0

}}

{{Election box candidate with party link

|party = Green Party of England and Wales

|candidate = Mark Thomas

|votes = 1,650

|percentage = 4.3

|change = +3.9

}}

{{Election box majority|

|votes = 6,419

|percentage = 16.8

|change =

}}

{{Election box turnout|

|votes = 38,234

|percentage = 52.7

|change = −9.6

}}

{{Election box registered electors|

|reg. electors = 72,643

}}

{{Election box hold with party link|

|winner = Welsh Labour

|swing = −6.2

}}

{{Election box end}}Of the 156 rejected ballots:

• 127 were either unmarked or it was uncertain who the vote was for.{{Cite web |title=Caerphilly – Caerphilly County Borough |url=https://www.caerphilly.gov.uk/my-council/voting-and-elections/election-results/general-election-results-2024 |access-date=2024-07-13 |website=www.caerphilly.gov.uk}}
• 28 voted for more than one candidate.
• 1 had writing or a mark by which the voter could be identified.

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

{{Reflist|group=n}}

{{Reflist}}

• [https://web.archive.org/web/20180216152334/http://www.politicsresources.net/area/uk/edates.htm Politics Resources] (Election results from 1922 onwards)
• [http://www.electoralcalculus.co.uk/flatfile.html Electoral Calculus] (Election results from 1955 onwards)
• [http://researchbriefings.files.parliament.uk/documents/CBP-7979/CBP-7979.pdf 2017 Election] House Of Commons Library 2017 Election report
• [http://www.visionofbritain.org.uk/ A Vision Of Britain Through Time] (Constituency elector numbers)
• [https://mapit.mysociety.org/area/12978.html Caerphilly UK Parliament constituency] (boundaries April 1997 – April 2010) at MapIt UK
• [https://mapit.mysociety.org/area/66106.html Caerphilly UK Parliament constituency] (boundaries April 2010 – May 2024) at MapIt UK
• [https://mapit.mysociety.org/area/168998.html Caerphilly UK Parliament constituency] (boundaries from June 2024) at MapIt UK

{{Constituencies in Wales}}

{{Authority control}}

{{Coord|51.579|-3.218|display=title|region:GB_scale:20000}}

Category:Parliamentary constituencies in South Wales

Category:Constituencies of the Parliament of the United Kingdom established in 1918