for the House of Commons
|Preserved county||Mid Glamorgan|
|Electorate||55,851 (December 2010)|
|Major settlements||Maesteg, Pencoed|
|Member of Parliament||Chris Elmore (Labour)|
|Number of members||One|
|Created from||Mid Glamorganshire and South Glamorganshire|
|Senedd||Ogmore, South Wales West|
1918–1983: The Urban Districts of Bridgend, Maesteg, and Ogmore and Garw, and part of the Rural District of Penybont.
1983–2010: The Borough of Ogwr wards of Bettws, Blackmill, Blaengarw, Caerau, Llangeinor, Llangynwyd, Maesteg East, Maesteg West, Nantyffyllon, Nant-y-moel, Ogmore Vale, Pencoed, Pontycymmer, St Bride's Minor, and Ynysawdre, and the Borough of Taff-Ely wards of Brynna, Gilfach Goch, Llanharan, and Llanharry.
2010–present: The Bridgend County Borough electoral divisions of Aberkenfig, Bettws, Blackmill, Blaengarw, Bryncethin, Bryncoch, Caerau, Cefn Cribwr, Felindre, Hendre, Llangeinor, Llangynwyd, Maesteg East, Maesteg West, Nant-y-moel, Ogmore Vale, Penprysg, Pontycymmer, Sarn, and Ynysawdre, and those in Rhondda Cynon Taff County Borough of Brynna, Gilfach Goch, Llanharan, and Llanharry.
Taking its name from the River Ogmore, the constituency is close to the source of the river in the Ogwr valley, but it excludes the village of Ogmore-by-Sea, south-west of Bridgend (Pen-y-bont ar Ogwr).[n 3] Ogmore constituency covers the area of Bridgend County Borough Council roughly north of the M4, and parts of Rhondda Cynon Taf County Borough Council. It includes the communities of Cefn Cribwr, Garw Valley, Gilfach Goch, Llanharan, Maesteg, Ogwr Valley, Pencoed, Sarn and Tondu.
- Major boundary change
A substantial change of boundaries took effect in 1983, when the new constituency of Bridgend was set up, centred on the town of that name, which was by then the largest settlement in Ogmore.
- Summary of winning results
The 2015 result made the seat the 44th-safest of Labour's 232 seats by percentage of majority. Successive candidates fielded by the Labour Party have won absolute majorities (pluralities) since the seat was created in 1918, or have run unopposed four times. The 2019 election was the first time in the seat's 101-year history that Labour failed to win an absolute majority, though the party still won with a margin of 22%
- Opposition parties
Four parties have taken the runner-up position from and including a 2002 by-election, a total of five elections. At the 2015 general election the Liberal Democrat, Green and TUSC candidates did not win 5% of the vote apiece therefore forfeited their deposits. Those running for the Conservatives and UKIP in 2015 (and 2016 at the by-election held during the month before the UK's EU membership referendum) held their deposits. The highest polling of any runner-up, by percentage, was Thomas George Jones in 1931, winning 30.8% of the votes cast, 0.3% more than the half-total of the winning candidate and in an election when the pre-World War II Labour Party's vote was slightly split by the presence of a prominent Communist Party candidate and editor, Johnny Campbell, the government's ceasing of prosecution of whom in 1924 led to a General Election.
Turnout at general elections has ranged between 85.3% in 1950 and 57.8% in 2005, falling to 35.2% in the 2002 by-election.
Members of Parliament
Elections in the 1910s
|Labour win (new seat)|
Elections in the 1920s
|National Liberal||John Walter Jones||7,498||24.1||N/A|
|Unionist||Dorothy Caroline Edmondes||6,257||20.1||N/A|
|Liberal||Dapho Llewellyn Powell||11,804||29.2||N/A|
|Communist||John Ross Campbell||1,525||3.8||N/A|
Elections in the 1930s
|Communist||John Ross Campbell||5,219||21.2||+17.4|
|Conservative||Thomas George Jones||11,653||30.8||+20.5|
|Communist||John Ross Campbell||3,099||8.2||+4.4|
Elections in the 1940s
|National||Owen Glyndwr Davies||7,712||18.0||N/A|
|Plaid Cymru||Trefor Richard Morgan||2,379||5.6||N/A|
|Plaid Cymru||Trefor Richard Morgan||5,685||29.4||+23.8|
Elections in the 1950s
|Welsh Republican Movement||Ithel Davies||631||1.3||N/A|
|Conservative||Percy Lunniss Powell||9,504||19.7||-0.7|
|British Empire Party||Trefor David||1,643||3.4||N/A|
|Conservative||Derek Geoffrey Jennings||10,751||24.4||+4.7|
|Conservative||Tom O. Ewart-Jones||11,905||25.3||+0.9|
Elections in the 1960s
|Conservative||Ralph Morgan Thomas||10,238||21.8||-3.5|
|Plaid Cymru||Margaret Tucker||2,470||5.3||N/A|
|Conservative||Ralph Morgan Thomas||6,872||14.6||-7.2|
|Liberal||Jennie Thomas Gibbs||6,632||14.1||N/A|
Elections in the 1970s
|Conservative||Antony F. Gardner||10,415||21.0||+6.4|
|Plaid Cymru||Edward John Merriman||5,828||11.7||N/A|
|Conservative||R K Jones||9,416||17.5||-3.5|
|Plaid Cymru||Edward John Merriman||5,139||9.6||-2.1|
|Conservative||R K Jones||8,249||16.1||-1.4|
|Plaid Cymru||D I Jones||4,290||8.4||-1.2|
|Plaid Cymru||D I Jones||2,450||4.4||-4.0|
Elections in the 1980s
|Plaid Cymru||Edward Merriman||3,124||7.9||+3.5|
|Plaid Cymru||John Jones||1,791||4.4||-3.5|
|Independent Labour||Thomas Spence||652||1.6||N/A|
Elections in the 1990s
|Conservative||David G. Edwards||6,359||15.1||+0.1|
|Liberal Democrats||John Warman||2,868||6.8||−2.8|
|Plaid Cymru||Laura McAllister||2,667||6.3||+1.9|
|Conservative||David A. Unwin||3,716||9.8||−5.3|
|Liberal Democrats||Kirsty Williams||3,510||9.2||+2.4|
|Plaid Cymru||John D. Rogers||2,679||7.0||+0.7|
Elections in the 2000s
|Plaid Cymru||Angela Pulman||4,259||14.0||+7.0|
|Liberal Democrats||Ian Lewis||3,878||12.8||+3.6|
|Plaid Cymru||Bleddyn Hancock||3,827||20.8||+6.8|
|Liberal Democrats||Veronica Watkins||1,608||8.8||−4.0|
|Socialist Labour||Christopher Herriot||1,152||6.3||N/A|
|Socialist Alliance||Jeffrey Hurford||205||1.1||N/A|
|Monster Raving Loony||Leslie Edwards||187||1.0||N/A|
|New Millennium Bean Party||Captain Beany||122||0.7||N/A|
Following the death of Sir Ray Powell on 7 December 2001 a by-election was held on 14 February 2002.
|Liberal Democrats||Jackie Radford||4,592||15.2||+2.4|
|Plaid Cymru||John Williams||3,148||10.4||−3.6|
Elections in the 2010s
|Liberal Democrats||Jackie Radford||5,260||15.2||+0.5|
|Plaid Cymru||Danny Clark||3,326||9.6||−0.6|
|Plaid Cymru||Tim Thomas||3,556||10.1||+0.5|
|Liberal Democrats||Gerald Francis||1,072||3.0||−12.2|
Of the 72 rejected ballots:
- 51 were either unmarked or it was uncertain who the vote was for.
- 21 voted for more than one candidate.
|Plaid Cymru||Abi Thomas||3,683||15.7||+5.6|
|Liberal Democrats||Janet Ellard||702||3.0||±0.0|
|Plaid Cymru||Huw Marshall||2,796||7.5||–2.6|
|Liberal Democrats||Gerald Francis||594||1.6||–1.4|
Of the 55 rejected ballots:
- 36 were either unmarked or it was uncertain who the vote was for.
- 19 voted for more than one candidate.
|Brexit Party||Christine Roach||2,991||8.5||N/A|
|Plaid Cymru||Luke Fletcher||2,919||8.3||+0.8|
|Liberal Democrats||Anita Davies||1,460||4.1||+2.5|
Of the 96 rejected ballots:
- 64 were either unmarked or it was uncertain who the vote was for.
- 32 voted for more than one candidate.
- Ogmore (Senedd constituency)
- 1931 Ogmore by-election
- 1946 Ogmore by-election
- 2002 Ogmore by-election
- 2016 Ogmore by-election
- List of Parliamentary constituencies in Mid Glamorgan
- List of Parliamentary constituencies in Wales
- Ogmore is most specifically a county constituency (for the purposes of election expenses and type of returning officer)
- Elmore won Ogmore in a by-election on 5 May 2016 after Huw Irranca-Davies resigned on 24 March 2016 to contest the 2016 National Assembly for Wales election.
- Ogmore-by-Sea forms part of the Vale of Glamorgan County Borough and of the Vale of Glamorgan constituency).
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- The Times' Guide to the House of Commons. 1951.
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- Ogmore BBC Election - Ogmore
- "Election Data 2015". Electoral Calculus. Archived from the original on 17 October 2015. Retrieved 17 October 2015.
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- "Ogmore Parliamentary constituency". Election 2015 Results. BBC. Retrieved 7 April 2020.
- "Archived copy". Archived from the original on 19 February 2015. Retrieved 19 February 2015.CS1 maint: archived copy as title (link)
- "Labour MP quits Commons to run for seat in Cardiff Bay". BBC News Online. 23 March 2016. Retrieved 28 March 2016.
- Casalicchio, Emilio (24 March 2016). "Two by-elections set for same day as UK-wide polls". PoliticsHome. Dod's Parliamentary Communications. Retrieved 28 March 2016.
- "By-election results since the 2015 General Election" (PDF). House of Commons Library. Retrieved 14 February 2020.
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- http://www.bridgend.gov.uk/media/426111/statement-of-persons-nominated.pdf[permanent dead link]
- "Ogmore Parliamentary constituency". Election 2017 Results. BBC. Retrieved 7 April 2020.
- "2017 Results" (PDF). Bridgend Council. Bridgend Council. Retrieved 7 April 2020.
- "The General Election 2019 candidates standing in Ogmore". Wales Online. Ruth Mosalski. Retrieved 17 November 2019.
- "Ogmore Parliamentary constituency". Election 2019 Results. BBC. Retrieved 7 April 2020.
- "Election-Results/General-Election-2019" (PDF). Bridgend Council. Bridgend Council. Retrieved 7 April 2020.
- Craig, F. W. S. (1983) . British parliamentary election results 1918-1949 (3rd ed.). Chichester: Parliamentary Research Services. ISBN 0-900178-06-X.
- Leigh Rayment's Peerage Pages
- A Vision Of Britain Through Time (Constituency elector numbers)
- 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)