List of parliamentary constituencies in West Sussex

The county of West Sussex is divided into 8 parliamentary constituencies - 2 borough constituencies and 6 county constituencies.

Constituencies

Conservative † Labour ‡ Liberal Democrat ¤

Constituency^{[nb 1]}	Electorate	Majority^{[nb 2]}			Electoral wards^[1]
Arundel and South Downs CC	77,969	12,134	Andrew Griffith †	Richard Allen ¤	Arun: Arundel and Walberton, Barnham, Felpham East (polling district BHOE) Chichester: Easebourne, Fernhurst, Fittleworth, Goodwood (polling districts GWBX, GWEA, GWED, GWSI and GWUP), Harting, Loxwood, Midhurst, Petworth Horsham: Bramber, Upper Beeding and Woodmancote, Henfield, Pulborough, Coldwaltham and Amberley, Steyning and Ashurst, Storrington and Washington, West Chiltington, Thakeham and Ashington
Bognor Regis and Littlehampton CC	77,565	3,651	Alison Griffiths †	Clare Walsh ‡	Arun: Aldwick East, Aldwick West, Beach, Brookfield, Courtwick with Toddington, Felpham East (polling districts BFELE1, BFELE2, BFELE3 and BFELE4), Felpham West, Hotham, Marine, Middleton-on-Sea, Orchard, Pevensey, River, Rustington East, Rustington West, Yapton
Chichester CC	78,374	12,178	Jess Brown-Fuller ¤	Gillian Keegan †	Arun: Bersted, Pagham Chichester: Chichester Central, Chichester East, Chichester North, Chichester South, Chichester West, Goodwood (polling districts GWWD and GWWH), Harbour Villages, Lavant, North Mundham and Tangmere, Selsey South, Sidlesham with Selsey North, Southbourne, The Witterings, Westbourne
Crawley BC	76,575	5,235	Peter Lamb ‡	Zack Ali †	Crawley: Bewbush and North Broadfield, Broadfield, Gossops Green and North East Broadfield, Ifield, Langley Green and Tushmore, Maidenbower, Northgate and West Green, Pound Hill North and Forge Wood, Pound Hill South and Worth, Southgate, Three Bridges, Tilgate
East Worthing and Shoreham CC	74,738	9,519	Tom Rutland ‡	Leila Williams †	Adur: Buckingham, Churchill, Cokeham, Eastbrook, Hillside, Manor, Marine, Mash Barn, Peverel, Southlands, Southwick Green, St Mary's, St Nicolas, Widewater Worthing: Broadwater, Gaisford, Offington, Selden
Horsham CC	79,150	2,517	John Milne ¤	Jeremy Quin †	Horsham: Billingshurst, Broadbridge Heath, Colgate and Rusper, Cowfold, Shermanbury and West Grinstead, Denne, Forest, Holbrook East, Holbrook West, Itchingfield, Slinfold and Warnham, Nuthurst and Lower Beeding, Roffey North, Roffey South, Rudgwick, Southwater North, Southwater South and Shipley, Trafalgar
Mid Sussex CC	75,969	6,662	Alison Bennett ¤	Kristy Adams †	Mid Sussex: Bolney, Burgess Hill Dunstall, Burgess Hill Franklands, Burgess Hill Leylands, Burgess Hill Meeds, Burgess Hill St. Andrews, Burgess Hill Victoria, Cuckfield, Hassocks, Haywards Heath Ashenground, Haywards Heath Bentswood, Haywards Heath Franklands, Haywards Heath Heath, Haywards Heath Lucastes, Hurstpierpoint and Downs, Lindfield
Worthing West BC	77,038	3,949	Beccy Cooper ‡	Peter Bottomley †	Arun: Angmering and Findon, East Preston, Ferring Worthing: Castle, Central, Durrington, Goring, Heene, Marine, Northbrook, Salvington, Tarring

Historic list of constituencies in West Sussex

Used from 1950 to 1974

Used from 1974 to 1983

Used from 1983 to 1997

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.

2010 boundary changes

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

Name	Boundaries 1997-2010	Boundaries 2010–2024
Arundel and South Downs CC Bognor Regis and Littlehampton CC Chichester CC Crawley BC East Worthing and Shoreham CC Horsham CC Mid Sussex CC Worthing West BC	Boundaries 1997-2010	Boundaries 2010–2024

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.^[2] 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 West Sussex be combined with East 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.^[3]^[4]

The following constituencies are proposed:

Containing electoral wards from Adur

East Worthing and Shoreham (part)

Containing electoral wards from Arun

Containing electoral wards from Chichester

Arundel and South Downs (part)
Chichester (part)

Containing electoral wards from Crawley

Crawley

Containing electoral wards from Horsham

Arundel and South Downs (part)

Horsham

Containing electoral wards from Mid Sussex

East Grinstead and Uckfield (also contains parts of Lewes and Wealden Districts in East Sussex)
Mid Sussex

Containing electoral wards from Worthing

East Worthing and Shoreham (part)
Worthing West (part)

Results history

Primary data source: House of Commons research briefing - General election results from 1918 to 2019^[5]

2024

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

Party	Votes	%	Change from 2019	Seats	Change from 2019
Conservative	126,025	30.8%	25.5%	2	8
Labour	102,338	25.0%	2.4%	3	3
Liberal Democrats	91,349	22.3%	5.8%	3	3
Reform	60,727	14.8%	New	0	0
Greens	22,841	5.6%	1.8%	0	0
Others	5,778	1.4%	1.6%	0	0
Total	409,058	100.0		8

Percentage votes

Election year	1983	1987	1992	1997	2001	2005	2010	2015	2017	2019	2024
Conservative	59.9	60.0	57.3	44.7	46.0	46.7	51.8	54.2	56.8	56.3	30.8
Labour	9.8	11.8	14.6	24.3	25.9	21.3	13.1	16.1	28.8	22.6	25.0
Liberal Democrat¹	29.3	27.6	25.7	25.6	23.0	26.1	27.4	8.4	8.3	16.5	22.3
Reform	-	-	-	-	-	-	-	-	-	-	14.8
Green Party	-	*	*	*	*	*	0.9	4.9	2.6	3.8	5.6
UKIP	-	-	-	*	*	*	5.2	15.6	2.4	*	-
Other	1.0	0.6	2.3	5.5	5.1	6.0	1.6	0.9	0.9	0.9	1.4

¹1983 & 1987 - SDP-Liberal Alliance

* Included in Other

Seats

Election year	1983	1987	1992	1997	2001	2005	2010	2015	2017	2019	2024
Conservative	7	7	7	7	7	7	8	8	8	8	2
Labour	0	0	0	1	1	1	0	0	0	0	3
Liberal Democrats	0	0	0	0	0	0	0	0	0	0	3
Total	7	7	7	8	8	8	8	8	8	8	8

Maps

1885-1910

1885
1886
1892
1895
1900
1906
Jan 1910
Dec 1910

1918-1945

1918
1922
1923
1924
1929
1931
1935
1945

1950-1979

1950
1951
1955
1959
1964
1966
1970
Feb 1974
Oct 1974
1979

1983-present

1983
1987
1992
1997
2001
2005
2010
2015
2017
2019
2024

Historical 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.

From 1885 to 2019, only two MPs had won elections who were not members of the Conservative Party: one Liberal MP in 1923 and one Labour MP in 1997, 2001 and 2005. This changed in 2024, with 3 Labour MPs and 3 Liberal Democrat MPs being elected.

1885 to 1918

Conservative

Constituency	1885	1886	88	1892	93	94	1895	1900	04	1906	Jan 1910	Dec 1910
Chichester	C. Gordon-Lennox		W. Gordon-Lennox			Talbot
Horsham	Barttelot				Johnstone				Turnour

1918 to 1950

Conservative Liberal

Constituency	1918	21	1923	1924	42	1945
Chichester	Talbot	Bird	Rudkin	Courtauld	Joynson-Hicks
Horsham and Worthing / Horsham (1945)	Turnour
Worthing						Prior-Palmer

1950 to 1983