Labour's Barry Sheerman has been MP for Huddersfield since the constituency was established in 1983.
He also represented Huddersfield East from 1979 to 1983. Mr Sheerman had a majority of 8,359 over the Lib Dems in the 2005 general election, making Huddersfield the safest Labour seat in Kirklees.
Mr Sheerman will contest the seat against James Blanchard of the Lib Dems, Conservative Karen Tweed and Andrew Cooper of the Greens. Paul Cooney is standing for the Trade Unionist and Socialist Coalition. Huddersfield is the only seat in Kirklees which the BNP are not contesting.
The constituency covers the Kirklees Council wards of Almondbury, Ashbrow, Dalton, Greenhead and Newsome. The Boundary Commission has made minor changes to the shape of the constituency since the last general election, including bringing in Lepton from the Wakefield seat.
Labour currently has seven councillors in Huddersfield, the Lib Dems have five and the Greens three. There are no Conservative councillors in the constituency.
The latest census figures show that four in five people in the Huddersfield constituency are white, while one in 10 was born outside the UK.
Once a centre of textiles, Huddersfield's main employers are now Kirklees Council, the NHS and the University of Huddersfield.
The constituency is home to several landmarks, including Victoria Tower, the Galpharm Stadium and Huddersfield Railway Station.