List of Parliamentary constituencies in South Yorkshire

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Constituency[nb 1]	Electorate[1]	Majority[2][nb 2]	Member of Parliament[2]		Nearest Opposition[2]		Electoral wards[3][4]	Map
Barnsley Central	65,277	3,571		Dan Jarvis‡		Victoria Felton#	Barnsley Metropolitan Borough Council: Central, Darton East, Darton West, Kingstone, Monk Bretton, Old Town, Royston, St Helens.
Barnsley East	69,504	3,217		Stephanie Peacock‡		Jim Ferguson#	Barnsley Metropolitan Borough Council: Cudworth, Darfield, Hoyland Milton, North East, Rockingham, Stairfoot, Wombwell, Worsbrough.
Don Valley	75,356	3,630		Nick Fletcher†		Caroline Flint‡	Doncaster Metropolitan Borough Council: Conisbrough and Denaby, Edlington and Warmsworth, Finningley, Hatfield, Rossington, Thorne, Torne Valley.
Doncaster Central	71,389	2,278		Rosie Winterton‡		Roberto Weeden-Sanz†	Doncaster Metropolitan Borough Council: Armthorpe, Balby, Bessacarr and Cantley, Central, Edenthorpe, Kirk Sandall and Barnby Dun, Town Moor, Wheatley.
Doncaster North	72,362	2,370		Ed Miliband‡		Katrina Sale†	Doncaster Metropolitan Borough Council: Adwick, Askern Spa, Bentley, Great North Road, Mexborough, Sprotbrough, Stainforth and Moorends.
Penistone and Stocksbridge	70,925	7,210		Miriam Cates†		Francyne Johnson‡	Barnsley Metropolitan Borough Council: Dodworth, Penistone East, Penistone West. Sheffield City Council: East Ecclesfield, Stocksbridge and Upper Don, West Ecclesfield.
Rother Valley	74,804	6,318		Alexander Stafford†		Sophie Wilson‡	Rotherham Metropolitan Borough Council: Anston and Woodsetts, Dinnington, Hellaby, Holderness, Maltby, Rother Vale, Sitwell, Wales.
Rotherham	61,688	3,121		Sarah Champion‡		Gerri Hickton†	Rotherham Metropolitan Borough Council: Boston Castle, Brinsworth and Catcliffe, Keppel, Rotherham East, Rotherham West, Valley, Wingfield.
Sheffield Brightside and Hillsborough	69,333	12,274		Gill Furniss‡		Hannah Westropp†	Sheffield City Council: Burngreave, Firth Park, Hillsborough, Shiregreen and Brightside, Southey.
Sheffield Central	89,949	27,273		Paul Blomfield‡		Janice Silvester-Hal†	Sheffield City Council: Broomhill, Central, Manor Castle, Nether Edge. Walkley.
Sheffield Hallam	72,763	712		Olivia Blake‡		Laura Gordon¤	Sheffield City Council: Crookes, Dore and Totley, Ecclesall, Fulwood, Stannington.
Sheffield Heeley	66,940	8,480		Louise Haigh‡		Gordon Gregory†	Sheffield City Council: Arbourthorne, Beauchief and Greenhill, Gleadless Valley, Graves Park, Richmond.
Sheffield South East	67,832	4,289		Clive Betts‡		Marc Bayliss†	Sheffield City Council: Beighton, Birley, Darnall, Mosborough, Woodhouse.
Wentworth and Dearne	74,536	2,165		John Healey‡		Emily Barley†	Barnsley Metropolitan Borough Council: Dearne North, Dearne South. Rotherham Metropolitan Borough Council: Hoober, Rawmarsh, Silverwood, Swinton, Wath, Wickersley.

Constituencies used in South Yorkshire from 1997–2010

1. Barnsley Central BC
2. Barnsley East and Mexborough CC
3. Barnsley West and Penistone CC
4. Doncaster Central BC
5. Doncaster North CC
6. Don Valley CC
7. Rother Valley CC
8. Rotherham BC
9. Sheffield, Attercliffe BC
10. Sheffield, Brightside BC
11. Sheffield Central BC
12. Sheffield, Hallam CC
13. Sheffield, Heeley BC
14. Sheffield, Hillsborough CC
15. Wentworth CC

The Boundary Commission for England 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.[5] Subsequently, the Parliamentary Constituencies Act 2020[6] 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.[7] 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 South Yorkshire in the 2019 general election were as follows:

Party	Votes	%	Change from 2017	Seats	Change from 2017
Labour	257,978	42.3%	14.6%	11	3
Conservative	196,969	32.3%	2.5%	3	3
Brexit	82,838	13.6%	new	0	0
Liberal Democrats	47,831	7.8%	1.9%	0	0
Greens	14,084	2.3%	1.1%	0	0
Others	10,506	1.7%	4.5%	0	0
Total	610,206	100.0		14

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.

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• List of Parliamentary constituencies in Yorkshire and the Humber (region)