Ex-British Treasury Secretary Rishi Sunak could succeed outgoing Prime Minister Truss. The two fought each other during the election campaign after Johnson’s resignation.

Ex-Finance Minister Rishi Sunak has gathered the hundred supporters needed to run to succeed outgoing Prime Minister Liz Truss. “I am honored to be the 100th Tory MP to ‘

Sunak has not yet officially declared his candidacy. He would automatically become party leader and prime minister if his opponents failed to rally 100 supporters each.

The most promising candidates are Sunak, leader of the House of Commons Penny Mordaunt, who was the first to officially announce her candidacy on Friday, and ex-Prime Minister Boris Johnson, who only stepped down in September.

The candidates should be known by Monday. A maximum of three can run, because each candidate needs at least a hundred supporters from the 357 Conservative MPs in Parliament. After that, MEPs either have to agree on two candidates, which party members can vote on by next Friday, or they directly choose a candidate who moves into Downing Street.