Halton was a constituency[n 1] in Cheshire, represented in the House of Commons of the UK Parliament from 1997 until 2024 by Derek Twigg of the Labour Party.

[6] Eastern part, including Castlefields ward transferred to the new constituency of Weaver Vale.

Its most marginal election result, a 12.8% majority, was the earliest in 1983, the year of Margaret Thatcher's first landslide victory.

It has otherwise, to date, proven a statistical safe seat for the Labour Party's incumbent MPs, of which there have thus far been two.

[8] Of the two forerunner seats, Widnes was last won by another party in 1935, whilst Runcorn had Conservative representation from its creation in 1950 to 1983, when it was abolished.