Johnson will learn the fate shortly before the 9 p.m. vote of confidence is announced
Boris Johnson’s fate will be decided in Committee Room 10, in the heart of the Palace of Westminster, where Tory MPs will vote.
MPs have been ordered to hand over their phones to keep the confidence vote process secret after two of them broke rules to take photos of their ballot papers during the 2018 leadership decision of Theresa May, a conservative source said.
MPs will parade through the committee room between 6 p.m. and 8 p.m. to vote with ballots counted by officers of the 1922 Committee.
The Prime Minister will be briefed on the outcome shortly before the official announcement, which will be made just down the hall from the committee in room 2 at 9 p.m.
Members who cannot vote in person may appoint a proxy to vote.
The whole process will be overseen by Sir Graham Brady, chairman of the 1922 Committee, who said he was steering a ‘tight ship’ – he was also in that position when Mrs May faced the same ordeal under her turbulent direction.
Sir Graham told Mr Johnson he would face a confidence vote early on Sunday afternoon.
The threshold of 54 MPs calling for a vote was passed on Sunday and Sir Graham said he received a ‘clear indication’ from other MPs that they would be submitting letters on Monday after the conclusion of the Platinum Jubilee festivities.
If Mr Johnson loses the vote of confidence, his leadership of the Conservative Party would come to an end – triggering a contest to replace him that could last around two months, as did the process that led to his election.
However, that process could be significantly curtailed, as was the case when Mrs May became Prime Minister and her last rival, Andrea Leadsom, dropped out.