Wentworth and Dearne is a constituency^{[n 1]} in South Yorkshire represented in the House of Commons of the UK Parliament since its 2010 creation by John Healey, a member of the Labour Party who has served as Shadow Secretary of State for Defence since 2020.^{[n 2]}

Further to the completion of the 2023 Periodic Review of Westminster constituencies, the seat will be subject to boundary changes, which will entail the loss of the two Dearne wards, offset by the addition of the City of Doncaster wards of Conisbrough, and Edlington and Warmsworth. As a consequence of these changes, it will be renamed Rawmarsh and Conisbrough, to be first contested at the next general election.^[2]

Parliament accepted the Boundary Commission's Fifth Periodic Review of Westminster constituencies recommending the creation of this constituency for the 2010 general election.

Political history

Most forerunner parts of the seat of Wentworth (which only existed in its second period from 1983 until 2010) matched its record of being a safe seat for the Labour Party. However, since the 2019 general election, the seat has become a marginal between Labour and the Conservative Party. Labour's majority over the Conservatives currently stands at 2,165. Labour's vote share declined by 24.7% at the 2019 election, the second-worst decline in vote share it suffered in any of the 630 constituencies that the party contested at that election (only being surpassed by the 24.9% decline in the Labour vote share in Bassetlaw).^[3]

Prominent frontbencher

The present member, John Healey, held a continuous period of frontbench positions, withstanding during this time various rotations of the Labour frontbench – the positions were:

• May 2002 – May 2005 – Economic Secretary to the Treasury
• May 2005 – June 2007 – Financial Secretary to the Treasury
• June 2007 – June 2009 – Minister of State for Local Government
• July 2007 – June 2009 – Minister for Flood Recovery
• June 2009 – May 2010 – Minister of State for Housing
• May 2010 – October 2010 – Shadow Minister of State for Housing
• October 2010 – October 2011 – Shadow Secretary of State for Health

In September 2015 he was appointed Shadow Minister for Housing (attending Shadow Cabinet)

The seat comprises satellite settlements to two large Yorkshire towns, separated by green buffers, in a band north of Rotherham and southeast of Barnsley and as such has the electoral wards:

• Metropolitan Borough of Rotherham: Hoober, Rawmarsh, Silverwood, Swinton, Wath and Wickersley
• Metropolitan Borough of Barnsley: Dearne North and Dearne South^[4]

Most of the constituency succeeds Wentworth however the large settlement of Dearne was instead the largest in Barnsley East and Mexborough. The name of the seat stems from the village that shares its name with the largest private house in the country and listed gardens in the seat, Wentworth Woodhouse, in a similar manner, with a widened use of an otherwise scarcely populated settlement, as Sefton and Tatton.

The South Yorkshire settlements grew in the seat into primarily large town size developments from the large presence of coal leading to extensive mining in this area, coupled with convenient proximity to Sheffield, the canals and rivers network, as well as to Doncaster, York, Wakefield and Leeds. As the mining industry has suffered a decline and agriculture employs few people, niche manufacturing, general processing (such as of food and raw materials) as well as retail and distribution are critical sectors of the economy to local employment. Workless claimants who were registered jobseekers were in November 2012 higher than the national average of 3.8%, at 5.6% of the population, based on a statistical compilation by The Guardian.^[5]

• List of parliamentary constituencies in South Yorkshire