A by-election in Boris Johnson’s London seat will be held on July 20, Hillingdon Council has announced.
Mr Johnson resigned his seat of Uxbridge and South Ruislip last week after receiving a draft report of the Privileges Committee’s report into whether he misled Parliament over Partygate.
The damning report published Thursday found that the former Prime Minister deliberately and repeatedly misled MPs with his Partygate denials, a conclusion he rejected.
In a statement, Hillingdon Council said constituents would start to receive their poll cards through the post from Friday June 23, with a deadline to register to vote on July 4.
The seat is seen as winnable by Labour, with a majority of 7,210.
The Conservatives will also defend a second seat in Selby and Ainsty in North Yorkshire on the same date after the resignation of Conservative MP Nigel Adams - an ally of Mr Johnson.
The seat has a majority of 20,137.
A third by-election is also due to be held in the normally Conservative safe seat of Mid Bedfordshire after former Culture Secretary Nadine Dorries announced her intention to resign.
However, Ms Dorries, an arch-loyalist to Mr Johnson, has demanded answers about why she was denied a peerage before she formally quits as an MP, meaning a date for a by-election has not been set.
The by-elections are set to be a major test for Rishi Sunak’s grip on power, coming as soaring interest rates and high inflation cause difficulties for household finances up and down the country.
MPs on the Commons’ Privileges Committee earlier Thursday published a damning report into Mr Johnson’s repeated denials of lockdown rule breaking at Downing Street while he was prime minister.
In a report, the committee found Mr Johnson committed “repeated contempts” of Parliament by deliberately misleading MPs, and was complicit in a campaign of abuse and intimidation by criticising the committee’s work.
Branding him the first former prime minister to have ever lied to the Commons, the Privileges Committee recommended a 90-day suspension.
It also recommended that he be denied the pass normally given to former MPs which allows access to the Parliamentary estate.
Mr Johnson hit back at the report’s findings, calling it a “dark day” for democracy, and accusing the committee of “twisting the truth” in order to carry out a politicial assassination of him.