The United Kingdom constitution – a mapping exercise
A briefing paper which "maps" (or summarises) the main elements of the United Kingdom's uncodified constitution.
Documents to download
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By-elections in the 2024 Parliament (375KB PDF)
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Supporting documents
- Results and candidates summary (37KB , Excel spreadsheet, XLSX ) (37KB Excel spreadsheet, XLSX)
This research briefing sets out results of the by-elections held during the 2024 Parliament. Results for previous by-elections for parliaments since 1997 are available in the following briefings:
- By-elections 2019-2024
- By-elections 2017-19
- By-elections 2015-17
- By-elections 2010-15
- By-elections 2005-10
- By-elections 2001-05
- By elections 1997-01
By-elections since 1945 are also summarised in UK Election Statistics: 1918-2023.
By-elections in the 2024 Parliament:
Runcorn and Helsby – 1 May 2025
Winner: Sarah Pochin (Reform).
Gorton and Denton – 26 Feb 2026
Winner: Hannah Spencer (Green).
Makerfield – 18 Jun 2026
Winner: Andy Burnham (Labour and Co-operative).
Aberdeen South – 18 Jun 2026
Winner: Douglas Lumsden (Conservative).
Arbroath and Broughty Ferry – 18 Jun 2026
Winner: Lara Bird (SNP).
Clacton – 13 Aug 2026
Winner: Nigel Farage (Reform).
Holborn and St Pancras – 08 Oct 2026
Winner: Sagal Abdi-Wali (Labour).
Full results of each by-election can be found on our election results website and in the files attached to this page.
Documents to download
-
By-elections in the 2024 Parliament (375KB PDF)
-
Supporting documents
- Results and candidates summary (37KB Excel spreadsheet, XLSX ) (37KB Excel spreadsheet, XLSX)
Related posts
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Women elected to the House of Commons
This list reports all the women who have been elected as MPs to the House of Commons, for each election since 1918 and in the order they were sworn in.
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UK parliamentary by-elections since 1945
This list notes the number of by-elections by session since 1945-46 together with a list of the the successful candidates in by-elections since 2005.
