With speculation of a bid within the Conservative Party to force Theresa May to step down, her tenure in Number 10 could be one of the shortest in British history.
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Mrs May became Prime Minister in July 2016 after David Cameron resigned following the Brexit referendum.
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But after a full year in Downing Street, Mrs May has already exceeded the terms of Andrew Bonar Law in the 1920s and Alec Douglas-Home in the 1960s.