UK parliamentary by-elections since 1945
This list notes the number of by-elections by session since 1945-46 and also lists the successful candidate in by-elections since 2005.
Documents to download
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Election Timetables (466 KB , PDF)
This Research Paper sets out the model timetables for Parliamentary general elections and by-elections. The Electoral Registration and Administration Act 2013 creates a 25 day timetable for general elections, with a timetable of up to 27 days for a by-election. A model local election timetable is also included. The Paper updates and replaces Research Paper 09/44 Election Timetables. Please note that the new timetables are not yet in force.
Documents to download
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Election Timetables (466 KB , PDF)
Related posts
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By-elections in the 2019 Parliament
This Commons Library Briefing Paper sets out results of the by-elections held in the 2019 Parliament. Full details are presented in the associated PDF but an overview of the recent by-election results are shown below. Data is also attached on this page.
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Fixed-term Parliaments Act 2011
The Fixed-term Parliaments Act 2011 creates a five year period between general elections. Early elections may only be held in specified circumstances. The Dissolution and Calling of Parliament Bill 2021-22, currently going through Parliament, would repeal the 2011 Act.
