Halton is a constituency^{[n 1]} in Cheshire, represented in the House of Commons of the UK Parliament since 1997 by Derek Twigg of the Labour Party.^{[n 2]}

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Halton
County constituency for the House of Commons
Boundary of Halton in Cheshire
Location of Cheshire within England
County	Cheshire
Electorate	72,668 (2018)[1]
Major settlements	Runcorn and Widnes
Current constituency
Created	1983
Member of Parliament	Derek Twigg (Labour)
Seats	One
Created from	Widnes and Runcorn[2]

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Further to the completion of the 2023 Periodic Review of Westminster constituencies, the seat will be abolished, with the majority, comprising the areas to the north of the River Mersey (Widnes), being included in the new constituency of Widnes and Halewood, to be first contested at the next general election. Areas to the south of the river (Runcorn) will be included in the new constituency of Runcorn and Helsby.^[3]

Halton was created for the 1983 general election following the major reorganisation of local authorities under the Local Government Act 1972, which came into effect on 1 April 1974. The constituency name refers to the Halton barony and covers the majority of the borough of the same name. It sits on either side of the River Mersey and comprises Widnes, the original town of Runcorn (with a small part of the new town) and Hale village.

The larger, northern part of the constituency comprised the former municipal borough of Widnes and the parish of Hale, which were part of the abolished Widnes constituency. The smaller, southern part comprised the majority of the former urban district of Runcorn (excluding Daresbury and Norton), which had been part of the abolished constituency of Runcorn.^[4]

1983–1997: The Borough of Halton wards of Appleton, Broadheath, Castlefields, Ditton, Farnworth, Grange, Hale, Halton, Halton Brook, Heath, Hough Green, Kingsway, Mersey, Victoria, and Weston.^[5]

1997–2010: The Borough of Halton wards of Appleton, Broadheath, Ditton, Farnworth, Grange, Hale, Halton, Halton Brook, Heath, Hough Green, Kingsway, Mersey, and Riverside.^[6]

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

2010–present: The Borough of Halton wards of Appleton, Birchfield, Broadheath, Castlefields, Ditton, Farnworth, Grange, Hale, Halton Brook, Halton View, Heath, Hough Green, Kingsway, Mersey, and Riverside.^[7]

Castlefields ward transferred back from Weaver Vale.

Halton is considered a safe seat for the Labour Party. Its most marginal election result, a 12.8% majority, was the earliest in 1983, the year of Margaret Thatcher's first landslide victory, — three elections later that majority had risen to 53.2% of the vote. 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. The 2015 result made the seat the 22nd safest of Labour's 232 seats by percentage of majority.^[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.

• List of parliamentary constituencies in Cheshire
• History of parliamentary constituencies and boundaries in Cheshire