The incumbent MP is Sarah Pochin of Reform UK, who defeated Labour candidate Karen Shore by six votes at a by-election on 1 May 2025, overturning a 34.8% majority.
Its predecessor constituency, Weaver Vale, had a Conservative MP from 2010 to 2017.[3]
Boundaries
Map of boundaries from 2024
The constituency is composed of the following (as they existed on 1 December 2020):
The Borough of Cheshire West and Chester wards of: Frodsham; Gowy Rural; Helsby; Sandstone.
The Borough of Halton wards of: Beechwood & Heath; Bridgewater; Daresbury, Moore & Sandymoor; Grange; Halton Castle; Halton Lea; Mersey & Weston; Norton North; Norton South & Preston Brook.[4]