Conservative MPs are choosing the third Prime Minister of the year as Boris Johnson eyes a controversial comeback.
MPs are starting to pick their candidate for leader with each hoping to pass the 100 vote threshold in the fast-tracked leadership race.
Rishi Sunak is in the lead with Penny Mordaunt coming third. Both challenged Liz Truss for the leadership, culminating in a torrid time in No10 before eventually quitting in the shortest-ever term in Downing Street.
Amid calls for a general election, Conservatives are now voting in a quicker timetable.
If only one candidate gets 100 votes, they will become leader after an MPs' vote on Monday. If there are three - the maximum possible under these rules - then an indicative vote will be held later that day.
Members, who ultimately picked Ms Truss over Mr Sunak, could get a say in an online vote if neither of the final two candidates drops out.
Sir Graham Brady, who leads the 1922 Committee of backbench Tory MPs, said a leader should be in place October 31.
According to Conservative Home, here are how the MPs are planning on voting: