Runcorn and Helsby is a new constituency that was only created in time for the general election in July 2024. More than half of it (51.2%) came from the former constituency of Weaver Vale, with 37.1% from Halton and the remainder from three other former constituencies - Ellesmere Port and Neston, Eddisbury, and City of Chester.

Reform beats Labour by six votes to take Runcorn and Helsby - The by-election victory came on top of gains in local contests across England for Nigel Farage’s party.

Reform have won the Runcorn and Helsby by-election, taking the seat from Labour by just six votes. The by-election was called after Labour's Mike Amesbury resigned following his conviction for punching a constituent. The result was the closest by-election result since records began in 1945.