The United Kingdom constitution – a mapping exercise
A briefing paper which "maps" (or summarises) the main elements of the United Kingdom's uncodified constitution.
By-elections in the 2024 Parliament
This briefing sets out results of the by-elections held in the 2024 Parliament, including lists of candidates, vote share and voter turnout.
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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Research Briefing
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.
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Research Briefing
Voting systems in the UK
UK elections use different voting systems. This briefing explains which systems are used for which election and how they work.
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Research Briefing
MPs standing down from the Commons at the next general election
Spreadsheet listing MPs not standing in the next general election.
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Research Briefing
How might a cap on donations affect political party income in the UK?
Modelling suggests that a cap on political donations would have substantially reduced annual party income in the year of, and the year before, the 2024 general election.
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Research Briefing
When do political donations have to be disclosed?
There are a number of different regulated entities in UK politics that, when certain thresholds are met, have to a) ensure that donations come from permissible sources and b) disclose information about the donor (often to the Electoral Commission).
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Research Briefing
The Privy Council: history, functions and membership
A briefing paper on the history, functions and membership of the Privy Council
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Research Briefing
By-election timetables
Election rules state elections must be held using a set timetable. This briefing explains the timetable for by-elections to the UK Parliament.
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Research Briefing
Senedd Cymru/ Welsh Parliament elections 2026
Elections to the Senedd Cymru/ Welsh Parliament took place on 7 May 2026. Plaid Cymru won the most seats, followed by Reform UK Wales.
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Research Briefing
Scottish Parliament elections 2026
Elections to the Scottish Parliament took place on 7 May 2026. The Scottish National Party won the most seats, followed by Labour and Reform UK.
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Research Briefing
State Opening of Parliament – history and ceremonial
A briefing paper on the State Opening of Parliament, its history and ceremonial
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Research Briefing
What impact do digital imprints have on voters?
Election campaign material produced by political parties, candidates and non-party campaigners must carry an ‘imprint’ on both digital and printed material. The Representation of the People Bill includes some reforms to the current digital imprints regime.
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Research Briefing
Overseas voters
Overseas voters are British citizens living overseas registered to vote in UK Parliament elections. This briefing explains overseas voters' eligibility and voting.
Total results (page 1 of 15)