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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Electoral Registration (Northern Ireland) Bill (HL) (Bill 64 of 2004/05) (166 KB , PDF)
The Electoral Registration (Northern Ireland) Bill (HL). (Bill 64 of 2004/05). House of Commons Library Research Paper 05/15.
Documents to download
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Electoral Registration (Northern Ireland) Bill (HL) (Bill 64 of 2004/05) (166 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.
