The county of West Sussex is divided into 9 parliamentary constituencies: 2 borough constituencies and 7 county constituencies, one of which crosses the county border with East Sussex.

Constituencies

ConstituencyBC denotes borough constituency, CC denotes county constituency.ElectorateMajorityThe majority is the number of votes the winning candidate receives more than their nearest rival.Member of ParliamentNearest oppositionElectoral wardsMapArundel and South Downs CC77,96912,134 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, PetworthHorsham: Bramber, Upper Beeding and Woodmancote, Henfield, Pulborough, Coldwaltham and Amberley, Steyning and Ashurst, Storrington and Washington, West Chiltington, Thakeham and AshingtonBognor Regis and Littlehampton CC77,5653,651 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, YaptonChichester CC78,37412,178 Jess Brown-Fuller ¤ Gillian Keegan †Arun: Bersted, PaghamChichester: 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, WestbourneCrawley BC76,5755,235 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, TilgateEast Grinstead and Uckfield CC (part)75,3858,480 Mims Davies † Benedict Dempsey ¤Lewes: Chailey, Barcombe and Hamsey, Newick, WivelsfieldMid Sussex: Ardingly and Balcombe, Ashurst Wood, Copthorne and Worth, Crawley Down and Turners Hill, East Grinstead Ashplats, East Grinstead Baldwins, East Grinstead Herontye, East Grinstead Imberhorne, East Grinstead Town, High WealdWealden: Buxted, Danehill and Fletching, Forest Row, Maresfield, Uckfield East, Uckfield New Town, Uckfield North, Uckfield Ridgewood and Little HorstedEast Worthing and Shoreham CC74,7389,519 Tom Rutland ‡ Leila Williams †Adur: Buckingham, Churchill, Cokeham, Eastbrook, Hillside, Manor, Marine, Mash Barn, Peverel, Southlands, Southwick Green, St Mary's, St Nicolas, WidewaterWorthing: Broadwater, Gaisford, Offington, SeldenHorsham CC79,1502,517 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, TrafalgarMid Sussex CC75,9696,662 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, LindfieldWorthing West BC77,0383,949 Beccy Cooper ‡ Peter Bottomley †Arun: Angmering and Findon, East Preston, FerringWorthing: Castle, Central, Durrington, Goring, Heene, Marine, Northbrook, Salvington, Tarring

Historic list of constituencies in West Sussex Used from 1950 to 1974

Arundel and Shoreham Chichester Horsham Worthing

Used from 1974 to 1983

Arundel Chichester Horsham and Crawley Shoreham Worthing

Used from 1983 to 1997

Arundel Chichester Crawley Horsham Mid Sussex Shoreham Worthing

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.

Boundary changes

2010 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. NameBoundaries 1997-2010Boundaries 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

2024 See 2023 review of Westminster constituencies for further details. NameBoundaries 2010–2024Boundaries 2024–present 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 East Grinstead and Uckfield CC (2024–present) For the 2023 review of Westminster constituencies, which redrew the constituency map ahead of the 2024 United Kingdom general election, the Boundary Commission for England opted to combine West Sussex 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.

The following constituencies were proposed:

Containing electoral wards from Adur

East Worthing and Shoreham (part)

Containing electoral wards from Arun

Arundel and South Downs (part) Bognor Regis and Littlehampton Chichester (part) Worthing West (part)

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

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: PartyVotes%Change from 2019SeatsChange from 2019Conservative126,02530.8%25.5%26Labour102,33825.0%2.4%33Liberal Democrats91,34922.3%5.8%33Reform60,72714.8%New00Greens22,8415.6%1.8%00Others5,7781.4%0.6%00Total409,058100.08

Percentage votes Election year19831987199219972001200520102015201720192024Conservative59.960.057.344.746.046.751.854.256.856.330.8Labour9.811.814.624.325.921.313.116.128.822.625.0Liberal Democrat129.327.625.725.623.026.127.48.48.316.522.3Reform - - - - - - - - - -14.8Green Party -*****0.94.92.63.85.6UKIP - - -***5.215.62.4* -Other1.00.62.35.55.16.01.60.90.90.91.4 11983 & 1987 - SDP–Liberal Alliance

* Included in Other

Seats Election year19831987199219972001200520102015201720192024Conservative77777788882Labour00011100003Liberal Democrats00000000003Total77788888888

Maps 1885-1910

1918-1945

1950-1979

1983-present

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

Constituency18851886881892939418951900041906Jan 1910Dec 1910ChichesterC. Gordon-LennoxW. Gordon-LennoxTalbotHorshamBarttelotJohnstoneTurnour

1918 to 1950

Constituency191821192219231924192919311935421945ChichesterTalbotBirdRudkinCourtauldJoynson-HicksHorsham and Worthing / Horsham (1945)TurnourWorthingPrior-Palmer

1950 to 1983

Constituency195019515419555819591964196669197071Feb 1974Oct 19741979Arundel and Shoreham / Shoreham (1974)CuthbertKerbyLuceChichesterJoynson-HicksLoveysChatawayNelsonHorsham / Horsham and Crawley (1974)TurnourGoughHordernWorthingPrior-PalmerHigginsArundelMarshall

1983 to present

Constituency19831987199219972001200520102015201720192024Arundel / Arundel and South Downs (1997)MarshallFlightHerbertGriffithChichesterNelsonTyrieKeegan Brown-FullerCrawleySoamesMoffattSmith LambHorshamHordernMaudeQuin MilneShoreham / East Worthing and Shoreham (1997)LuceStephenLoughton RutlandMid SussexRentonSoamesDavies BennettWorthing / Worthing West (1997)HigginsBottomley CooperBognor Regis and LittlehamptonGibb Griffiths

See also List of parliamentary constituencies in the South East (region)

Notes

References