BBC News Devon
In case you missed it
By Justin Parkinson
Political reporter, BBC News
By Jennifer McKiernan
Newly-elected Richard Foord says his win is a loud and clear message to the PM.
BBC South West
The new Liberal Democrat MP for Tiverton and Honiton says his win shows that voters think "enough is enough" of Boris Johnson's leadership.
Richard Foord said it was an "extraordinary and historic result which has sent a shockwave through British politics".
He said: "Tonight the people of Britain have spoken.
“They’ve sent a loud and clear message: It's time for Boris Johnson to go and go now.”
He said the prime minister had brought a state of "shame, chaos and neglect”.
He added: “By any measure you are unfit to lead, and the people of Tiverton and Honiton have said is enough is enough.
“The only decent course of action is to heed their call and resign.”
Counting has now begun in Devon in the Tiverton and Honiton by-election after the full verification of votes, officials confirm.