Darlington is the parliamentary constituency for the eponymous market town in County Durham in the North East of England. It is currently represented in the House of Commons of the UK Parliament by Peter Gibson of the Conservative Party, who was first elected in 2019. The constituency was created for the 1868 election; it covers the market town of Darlington in County Durham. Constituency profile The constituency is tightly drawn around the Darlington urban boundary, and is slightly less wealthy and more deprived than the UK average figures. Boundaries 1868–1885 Under the Reform Act 1867, the proposed contents of the new parliamentary borough were defined as the townships of Darlington, Haughton-le-Skerne, and Cockerton. However, this was amended under the Boundary Act 1868, with the boundary defined as being coterminous with the Municipal Borough of Darlington. See map on Vision of Britain website. 1885-1918 As defined in 1868 with minor amendments. 1918–1983 The County Borough of Darlington. The boundaries were adjusted in 1918, 1950 and 1973 to reflect changes to the boundaries of the county borough. 1983–2010 The Borough of Darlington wards of Bank Top, Central, Cockerton East, Cockerton West, college, Eastbourne North, Eastbourne South, Harrowgate Hill, Haughton East, Haughton West, Hummersknott, Lascelles, Lingfield, Mowden, Northgate North, Northgate South, North Road, Park East, Park West, and Pierremont. No change to boundaries. 2010–2015 The Borough of Darlington wards of Bank Top, Central, Cockerton East, Cockerton West, College, Eastbourne, Faverdale, Harrowgate Hill, Haughton East, Haughton North, Haughton West, Hummersknott, Lascelles, Lingfield, Mowden, Northgate, North Road, Park East, Park West, and Pierremont. Minor change to reflect new ward boundaries. 2015–present The Borough of Darlington wards of Bank Top and Lascelles, Brinkburn and Faverdale, Cockerton, College, Eastbourne, Harrowgate Hill, Haughton and Springfield, Hummersknott, Mowden, Northgate, North Road, Park East, Park West, Pierremont, Red Hall and Lingfield, Stephenson, and Whinfield. Following a further change to the ward boundaries of Darlington Borough in 2015, the contents of the seat are currently as above. No change to boundaries. Political history The seat has been held by all three major parties in its long existence, but has been a marginal constituency between the Labour and Conservative parties in the years since the Second World War. Labour held the seat for 27 years from 1992 with their candidate Jenny Chapman winning the seat in 2010 with a 3,388 majority down from 10,404 in the previous election. In 2015, her majority