List of parliamentary gains and losses in the 2015 United Kingdom general election
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This is a list of parliamentary constituencies that changed political allegiance in the United Kingdom general election on 7 May 2015. This includes those seats that changed parties in by-elections but were regained on 7 May. It does not include those where a new member has been elected from the same party as the previous incumbent.
Constituency Region Party of incumbent before election Party of incumbent after election[1] Notes[2] Aberdeen South Scotland Labour Scottish National Party Airdrie and Shotts Scotland Labour Scottish National Party Ayr, Carrick and Cumnock Scotland Labour Scottish National Party Bath South West Liberal Democrats Conservative Party Belfast East Northern Ireland Alliance Democratic Unionist Party Bermondsey and Old Southwark London Liberal Democrats Labour Party Berwick-upon-Tweed North East Liberal Democrats Conservative Party Berwickshire, Roxburgh and Selkirk Scotland Liberal Democrats Scottish National Party Birmingham, Yardley West Midlands Liberal Democrats Labour Party Bolton West North West Labour Conservative Party Bradford East Yorkshire and the Humber Liberal Democrats Labour Party Bradford West Yorkshire and the Humber Respect Labour Party Brecon and Radnorshire Wales Liberal Democrats Conservative Party Brent Central London Liberal Democrats Labour Party Brentford and Isleworth London Conservative Labour Party Bristol West South West Liberal Democrats Labour Party Burnley North West Liberal Democrats Labour Party Caithness, Sutherland and Easter Ross Scotland Liberal Democrats Scottish National Party Cambridge Eastern Liberal Democrats Labour Party Cardiff Central Wales Liberal Democrats Labour Party Central Ayrshire Scotland Labour Scottish National Party Cheadle North West Liberal Democrats Conservative Party Cheltenham South West Liberal Democrats Conservative Party Chippenham South West Liberal Democrats Conservative Party City of Chester North West Conservative Labour Party Coatbridge, Chryston and Bellshill Scotland Labour Scottish National Party Colchester Eastern Liberal Democrats Conservative Party Corby East Midlands Labour Co-operative Conservative Party Cumbernauld, Kilsyth and Kirkintilloch East Scotland Labour Scottish National Party Derby North East Midlands Labour Conservative Party Dewsbury Yorkshire and the Humber Conservative Labour Party Dumfries and Galloway Scotland Labour Scottish National Party Dundee West Scotland Labour Scottish National Party Dunfermline and West Fife Scotland Labour Scottish National Party Ealing Central and Acton London Conservative Labour Party East Dunbartonshire Scotland Liberal Democrats Scottish National Party East Kilbride, Strathaven and Lesmahagow Scotland Labour Scottish National Party East Lothian Scotland Labour Scottish National Party East Renfrewshire Scotland Labour Scottish National Party Eastbourne South East Liberal Democrats Conservative Party Eastleigh South East Liberal Democrats Conservative Party Edinburgh East Scotland Labour Scottish National Party Edinburgh North and Leith Scotland Labour Co-operative Scottish National Party Edinburgh South West Scotland Labour Scottish National Party Edinburgh West Scotland Liberal Democrats Scottish National Party Enfield North London Conservative Labour Party Falkirk Scotland Labour Scottish National Party Fermanagh and South Tyrone Northern Ireland Sinn Féin Ulster Unionist Party Glasgow Central Scotland Labour Scottish National Party Glasgow East Scotland Labour Scottish National Party Glasgow North Scotland Labour Scottish National Party Glasgow North East Scotland Labour Scottish National Party Glasgow North West Scotland Labour Scottish National Party Glasgow South Scotland Labour Scottish National Party Glasgow South West Scotland Labour Co-operative Scottish National Party Glenrothes Scotland Labour Scottish National Party Gordon Scotland Liberal Democrats Scottish National Party Gower Wales Labour Conservative Party Hazel Grove North West Liberal Democrats Conservative Party Hornsey and Wood Green London Liberal Democrats Labour Party Hove South East Conservative Labour Party Ilford North London Conservative Labour Party Inverclyde Scotland Labour Scottish National Party Inverness, Nairn, Badenoch and Strathspey Scotland Liberal Democrats Scottish National Party Kilmarnock and Loudoun Scotland Labour Co-operative Scottish National Party Kingston and Surbiton London Liberal Democrats Conservative Party Kirkcaldy and Cowdenbeath Scotland Labour Scottish National Party Lanark and Hamilton East Scotland Labour Scottish National Party Lancaster and Fleetwood North West Conservative Labour Party Lewes South East Liberal Democrats Conservative Party Linlithgow and East Falkirk Scotland Labour Scottish National Party Livingston Scotland Labour Scottish National Party Mid Dorset and North Poole South West Liberal Democrats Conservative Party Midlothian Scotland Labour Scottish National Party Morley and Outwood Yorkshire and the Humber Labour Co-operative Conservative Party Motherwell and Wishaw Scotland Labour Scottish National Party North Ayrshire and Arran Scotland Labour Scottish National Party North Cornwall South West Liberal Democrats Conservative Party North Devon South West Liberal Democrats Conservative Party North East Fife Scotland Liberal Democrats Scottish National Party Norwich South Eastern Liberal Democrats Labour Party Paisley and Renfrewshire North Scotland Labour Scottish National Party Paisley and Renfrewshire South Scotland Labour Scottish National Party Plymouth, Moor View South West Labour Conservative Party Portsmouth South South East Liberal Democrats Conservative Party Redcar North East Liberal Democrats Labour Co-operative Rochester and Strood South East UKIP Conservative Party Ross, Skye and Lochaber Scotland Liberal Democrats Scottish National Party Rutherglen and Hamilton West Scotland Labour Co-operative Scottish National Party Solihull West Midlands Liberal Democrats Conservative Party Somerton and Frome South West Liberal Democrats Conservative Party South Antrim Northern Ireland DUP Ulster Unionist Party Southampton Itchen South East Labour Conservative Party St Austell and Newquay South West Liberal Democrats Conservative Party St Ives South West Liberal Democrats Conservative Party Stirling Scotland Labour Scottish National Party Sutton and Cheam London Liberal Democrats Conservative Party Taunton Deane South West Liberal Democrats Conservative Party Telford West Midlands Labour Conservative Party Thornbury and Yate South West Liberal Democrats Conservative Party Torbay South West Liberal Democrats Conservative Party Twickenham London Liberal Democrats Conservative Party Vale of Clwyd Wales Labour Conservative Party Wells South West Liberal Democrats Conservative Party West Aberdeenshire and Kincardine Scotland Liberal Democrats Scottish National Party West Dunbartonshire Scotland Labour Co-operative Scottish National Party Wirral West North West Conservative Labour Party Wolverhampton South West West Midlands Conservative Labour Party Yeovil South West Liberal Democrats Conservative Party