The field of Tory leadership challengers has been whittled down to six after three candidates were ousted at the first ballot of MPs on Thursday and Matt Hancock opted to withdraw on Friday.
Those still standing now have one day in which to persuade more of their Conservative colleagues to back their bids before the second round of voting takes place tomorrow.
At this point the race is entirely about momentum. Boris Johnson has cemented his status as the favourite after he secured 114 votes – enough to effectively guarantee he is one of the final two candidates.
But for the remaining five candidates, it is all still to play for.
Four Tory leadership challengers are now out of the race for Number 10. Esther McVey, Andrea Leadsom and Mark Harper were eliminated in the first round of voting while Matt Hancock has chosen to withdraw from the race
What is happening today?
Five of the six remaining leadership candidates will face a grilling by political journalists at an event in Parliament.
The candidates will take it in turns to face 20 minutes of questions but Mr Johnson is not taking part.
There will also be another hustings event, this one in front of Tory MPs, featuring all of the candidates as they seek to win further support.
What happens on Tuesday?
Tory MPs will vote for the second time in what is likely to be a make or break moment in the race to succeed Theresa May.
There will be six candidates to choose from but only Mr Johnson will have any certainty about making it to the next stage.
Anyone not named Mr Johnson will now have the same goal: To finish in second place and make it onto the final ballot paper alongside Mr Johnson.
Jeremy Hunt came second in Thursday’s vote with the support of 43 of his colleagues.
But none of the other remaining candidates are too far behind and all of them will be hopeful of hoovering up at least some of the MPs who backed the four candidates who are no longer in the race.
They will need at least 33 votes to progress to the third vote but if all of the six candidates manage to get past that threshold, whoever has the fewest votes will be eliminated.
The Foreign Secretary came second in the first round of voting and will now be hoping to persuade Tory MPs that he is the candidate capable of challenging Boris Johnson
Rory Stewart faces the biggest challenge after he only secured the support of 19 MPs in the first round.
Mr Johnson’s grip on the contest is expected to grow still further after he picked up the support of former rivals Mr Hancock and Esther McVey.
Once the second ballot has finished and at least one candidate has been eliminated there will then be a televised leadership debate on BBC One at 8pm hosted by Emily Maitlis.
Mr Johnson has said he will take part after snubbing one held by Channel 4 on Sunday.
What happens after the second round of voting on Tuesday?
It is the job of Tory MPs to cut the list of candidates to two and after Tuesday’s vote there will then follow further ballots on Wednesday and, if necessary, on Thursday, until the chosen pair remain.
The number of further ballots needed will be determined by whether trailing candidates opt to withdraw from the contest but the third ballot is scheduled for Wednesday while the fourth and fifth would take place on Thursday.
What happens once there are two candidates left?
The Conservative Party’s estimated 160,000 members will be asked to choose who they want to be their next leader.
The final two will have to face 16 leadership hustings events across the nation with the first due to be held in Birmingham on June 22 and the last one taking place in London in the week starting July 15.
Ballot papers are expected to sent out to members between July 6-8.
The overall winner of the contest is due to be announced in the week of July 22.
Mrs May will then go to see the Queen to formally resign and the newly elected leader of the Conservative Party will be invited to Buckingham Palace to form a new government.
Who could the MPs who supported the four eliminated candidates now back?
Mr Johnson has racked up endorsements from both Esther McVey and Matt Hancock over the weekend – increasing his already impressive tally.
The support will be hugely disappointing to Mr Raab – who needs votes from Brexiteers like Ms McVey – and Mr Gove, who had been hoping to woo Mr Hancock’s centrist acolytes.
The 10 MPs who backed Mark Harper, a candidate with a softer approach to Brexit, have been targeted by the likes of Mr Hunt and Sajid Javid.
Boris Johnson is now the prohibitive favourite to succeed Theresa May after securing the support of 114 Tory MPs in the first round of voting
So does Boris have it sewn up?
Previous Tory leadership contests have shown that the person who leads the race at the start of the process does not always finish in first.
Leadership campaigns are also volatile and it is distinctly possible that an unforeseen event in the coming weeks could radically shake up the battle for Number 10.
Mr Johnson is in pole position but there is still plenty of time for that to change.