Sources: Press Association, Electoral Commission, House of Commons Library, Office for National Statistics, National Records of Scotland, Northern Ireland Statistics and Research Agency.
Note: The tally of seats and votes at the top of this page includes the Speaker of the House of Commons with Other. The map and details card for the Chorley constituency list his party as “Speaker”.
Notional results: UK parliamentary constituency boundaries have changed since the last election in 2019, affecting 90 per cent of constituencies. All results prior to 2024 are therefore “notional”, or estimates of what the outcome of past elections would have been, had they been contested under the present boundaries. Notional results for 2019 were compiled by Professors Colin Rallings and Michael Thrasher on behalf of BBC News, ITV News, Sky News and the Press Association. Calculations for Scotland were done by Professor David Denver and those for Northern Ireland by Nicholas Whyte. Notional results for all years prior to 2019 were calculated by the FT.
Produced by: Lizzy Bowler, Oliver Hawkins, Eade Hemingway, Ella Hollowood, Joanna S Kao, Emma Lewis, Debie Loizou, Caroline Nevitt, Ændra Rininsland, Martin Stabe, Jana Tauschinski and Jonathan Vincent.
To contact the team that maintains this page, email elections@ft.com.