The electoral wards in the Blackburn seat fought at the UK general election in 2010 were entirely within the district of Blackburn with Darwen.
Audley, Bastwell, Beardwood and Lammack, Corporation Park, Ewood, Higher Croft, Little Harwood, Livesey with Pleasington, Meadowhead, Mill Hill, Queen's Park, Roe Lee, Shadsworth with Whitebirk, Shear Brow and Wensley Fold.