Ellesmere Port and Neston is a constituency^{[n 1]} represented in the House of Commons of the UK Parliament since 2015 by Justin Madders of the Labour Party.^{[n 2]}

Further to the completion of the 2023 Periodic Review of Westminster constituencies, the seat will be subject to boundary changes which will involve the loss of Neston to the new constituency of Chester North and Neston. To compensate, the Metropolitan Borough of Wirral wards of Bromborough and Eastham will be transferred from the disappearing seat of Wirral South. As a consequence of these changes, the constituency will be renamed Ellesmere Port and Bromborough, to be first contested at the next general election.^[3]

The constituency was formed in 1983, largely from the southern parts of the former Bebington and Ellesmere Port and Wirral constituencies. Both were former Conservative seats. Mike Woodcock of the Conservatives held the seat from the 1983 election until the 1992 election, when it was taken by Andrew Miller of the Labour Party. Miller held the seat until his retirement from the Commons in 2015, during which time it became a relatively safe Labour seat, and was succeeded by Justin Madders.^[4]

1983–1997: The Borough of Ellesmere Port and Neston, and the City of Chester wards of Elton, Mollington, and Saughall.^[5]

The majority of the constituency (Ellesmere Port) had previously been one half of the abolished Bebington and Ellesmere Port constituency, whilst Neston had been a smaller part of the abolished Wirral constituency. The three City of Chester wards were transferred from the City of Chester constituency.

1997–2010: The Borough of Ellesmere Port and Neston, and the City of Chester ward of Elton.^[6]

The Mollington and Saughall wards transferred back to City of Chester.

2010–2019: The Parliamentary Constituencies (England) Order 2007 defined the boundaries as:

The Borough of Ellesmere Port and Neston (all wards), and the City of Chester wards of Elton and Mickle Trafford.^[7]

Minor changes due to revision of ward boundaries.

However, before the new boundaries came into force for the 2010 election, the districts making up the county of Cheshire were abolished on 1 April 2009, being replaced by four unitary authorities. Consequently, the constituency's boundaries became:

The Cheshire West and Chester wards of Chester Villages (part), Ellesmere Port Town, Elton, Grange, Ledsham and Manor, Little Neston and Burton (part), Neston, Netherpool, Parkgate, Rossmore, St Paul's, Strawberry, Sutton, Whitby, and Willaston and Thornton.

2019–present: Following a further local government ward boundary review in 2019, the boundaries are currently:

The Cheshire West and Chester wards of Central and Grange, Gowy Rural (part), Ledsham and Manor, Little Neston, Neston, Netherpool, Parkgate, Sandstone (part), Strawberry, Sutton Villages, Westminster, Whitby Groves, Whitby Park, Willaston and Thornton (part), and Wolverham.^[8]

The constituency includes the industrial town of Ellesmere Port, the smaller residential town of Neston and villages such as Burton, Parkgate, Willaston, Elton and Mickle Trafford.^[9]

• List of parliamentary constituencies in Cheshire
• History of parliamentary constituencies and boundaries in Cheshire
• Politics of the United Kingdom