Keighley /ˈkiːθli/ ^ⓘ is a constituency in West Yorkshire^{[n 1]} created in 1885 represented in the House of Commons of the UK Parliament^{[n 2]} since 2019 by Robbie Moore of the Conservative Party.

Since 1959, the seat has been a bellwether (its winner affiliated to the winning party nationally), with two exceptions: in 1979 and 2017, the seat leant to the left, bucking the national result.

Keighley is one of 9 seats won (held or gained) by a Conservative candidate in 2019 from a total of 22 covering its county. Moore's 2019 win was one of 47 net gains by the Conservative Party.

The seat has been considered – relative to others – a marginal seat, as well as a swing seat, since 2005, as its winner's majority has not exceeded 6.2% of the vote since the 10.5% majority won in 2005, and the seat has changed hands three times since that year.

Further to the 2023 Periodic Review of Westminster constituencies, enacted by the Parliamentary Constituencies Order 2023, there will be no changes to the constituency boundaries, but it will be renamed Keighley and Ilkley from the next general election, due by January 2025.^[2][3]

1885–1918: The parishes in the Wapentake of Staincliffe and Ewecross of Cowling, Glusburn, Keighley, Steeton with Eastburn, and Sutton, and the parishes of Haworth, Thornton, and Wilsden.

1918–1950: The Municipal Borough of Keighley, the Urban Districts of Denholme, Haworth, Oakworth, Oxenhope, and Silsden, and the Rural District of Keighley.

1950–1983: The Municipal Borough of Keighley, the Urban Districts of Denholme and Silsden, and in the Rural District of Skipton the parishes of Steeton with Eastburn, and Sutton.

1983–2010: The City of Bradford wards of Craven, Ilkley, Keighley North, Keighley South, Keighley West, and Worth Valley.

2010–present: The City of Bradford wards of Craven, Ilkley, Keighley Central, Keighley East, Keighley West, and Worth Valley. The constituency boundaries remained unchanged.

Unlike many constituencies, Keighley was unaffected by the boundary changes for the 2010 general election; indeed its boundaries have remained unchanged since the 1983 redistribution.

This constituency covers the town and outskirts of Keighley in West Yorkshire. It comprises the mostly Labour voting area of Keighley itself, the Conservative voting spa town of Ilkley, and the rural areas of Craven and Worth Valley which are also mostly Conservative voting. The seat has a large minority with Asian heritage, especially from Pakistan and Bangladesh.^[4] The seat is also a semi-reliable bellwether of the national result; it has voted for the party to form the government in every election since the Second World War except the 1951, 1955, 1979 and 2017 elections, in which it elected Labour MPs despite the Conservatives forming the government. The constituency is often known as Keighley & Ilkley rather than just Keighley.

Since the 1950s, Keighley has been a marginal seat between Labour and the Conservatives. The MP from 1997 was Labour's Ann Cryer, widow of Bob Cryer who was MP for the same seat from 1974 to 1983 (and then for Bradford South, 1987–1994). She retired at the 2010 general election.

• List of parliamentary constituencies in West Yorkshire