2021 Chesham and Amersham by-election
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Chesham and Amersham constituency | |||||||||||||||||||||||||
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| Turnout | 52.1% (24.7 pp) | ||||||||||||||||||||||||
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A by-election was held in the United Kingdom Parliament constituency of Chesham and Amersham on 17 June 2021, following the death of the sitting member, Dame Cheryl Gillan, on 4 April 2021. Gillan had served as MP for the constituency since 1992. The by-election was the third to the 58th Parliament, which was elected in 2019.
The Liberal Democrat candidate, Sarah Green, won the by-election with 56.7% of the vote and a swing from the Conservatives of 25.2%. This was the first time a non-Conservative candidate had won this seat since its formation in 1974.
This was the first of four by-elections won by the Liberal Democrats in this parliament; they subsequently won the by-elections in North Shropshire, in December 2021, in Tiverton and Honiton, in June 2022, and in Somerton and Frome, in July 2023.