List of parliamentary constituencies in East Sussex

The ceremonial county of East Sussex, (which includes the unitary authority of Brighton & Hove) is divided into 9 parliamentary constituencies - 4 borough constituencies and 5 county constituencies.

2010 boundary changes
Under the Fifth Periodic Review of Westminster constituencies, the Boundary Commission for England decided to retain the existing 8 constituencies in East Sussex, with minor changes to realign constituency boundaries with those of current local government wards, and to reduce the electoral disparity between constituencies.

Proposed boundary changes
See 2023 Periodic Review of Westminster constituencies for further details.

Following the abandonment of the Sixth Periodic Review (the 2018 review), the Boundary Commission for England formally launched the 2023 Review on 5 January 2021. Initial proposals were published on 8 June 2021 and, following two periods of public consultation, revised proposals were published on 8 November 2022. The final proposals were published on 28 June 2023.

The commission has proposed that East Sussex be combined with West Sussex as a sub-region of the South East Region, resulting in the creation of a new cross-county boundary constituency named East Grinstead and Uckfield. The resultant changes to existing constituencies would entail the abolition of Wealden and the creation of the new constituency of Sussex Weald. Brighton Kemptown will be renamed Brighton Kemptown and Peacehaven, and, although its boundaries are unchanged, it is proposed that Hove be renamed Hove and Portslade.

The following constituencies are proposed:

Containing electoral wards from Brighton and Hove


 * Brighton Kemptown (part)
 * Brighton Pavilion
 * Hove and Portslade

Containing electoral wards from Eastbourne


 * Eastbourne

Containing electoral wards from Hastings


 * Hastings and Rye (part)

Containing electoral wards from Lewes


 * Brighton Kemptown (part)
 * East Grinstead and Uckfield (part)1
 * Lewes (part)

Containing electoral wards from Rother


 * Bexhill and Battle (part)
 * Hastings and Rye (part)

Containing electoral wards from Wealden


 * Bexhill and Battle (part)
 * East Grinstead and Uckfield (part)1
 * Lewes (part)
 * Sussex Weald

1 Also contains part of Mid Sussex District in West Sussex

Results history
Primary data source: House of Commons research briefing - General election results from 1918 to 2019

2019
The number of votes cast for each political party who fielded candidates in constituencies comprising East Sussex in the 2019 general election were as follows:

Percentage votes
11983 & 1987 - SDP-Liberal Alliance

* Included in Other

Seats
11983 & 1987 - SDP-Liberal Alliance

Historic representation by party
A cell marked → (with a different colour background to the preceding cell) indicates that the previous MP continued to sit under a new party name.

The Local Government Act 1972 moved the District of Mid Sussex into West Sussex from East Sussex. This change was put into effect in the Parliamentary constituency boundaries for the 1983 boundary changes.

1983 to present
1partly in West Sussex