BORIS Johnson suffered a historic by-election defeat in Tory home-county heartlands this morning as the Lib Dems scored an extraordinary upset to overturn a 16,000 majority.
Bruised Conservatives were reeling on Friday after losing leafy Chesham and Amersham for the first time since its creation in 1974 - while Labour also slumped to their worst by-election result ever.
Lib Dem candidate and soon-to-be MP Sarah Green stormed the seat by 8,000 votes to trounce Tory favourite Peter Fleet.
Party leader Sir Ed Davey hailed the "shockwave through British politics" and put the Tories on notice he's eyeing up further strongholds.
Conservative sources played down the loss as normal for a governing party in the middle of an electoral cycle.
But privately it will jangle nerves that the party's charm offensive in Red Wall towns is costing them support in southern strongholds.
The contest was triggered by the death of former Cabinet minister Dame Cheryl Gillan, who took the seat with a majority of 16,233 in the 2019 general election - some 55 per cent of the vote.
In a stunning result, Ms Green took 56.7 per cent of the vote to secure a majority of 8,028 over the second-placed Tories.
"This Conservative Party has taken people across the country for granted for far too long," Ms Green said.
The Green Party came third with 1,480 votes, with Labour trailing in fourth with just 622 votes, losing the party's deposit in the process.
Lib Dems overturn a 16,000 Tory majority to win Chesham and Amersham by-election by 8,000 votes in bloody nose for Boris
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