Tories launched a fresh push today to oust Theresa May after the PM unveiled a 'grotesque' new Brexit deal.
Brexiteer MPs demanded an immediate leadership contest after her offer of a vote on a second referendum - designed to win over Labour - backfired in her own ranks.
In a humiliating final gamble last might, the PM offered several changes to "soften" her Brexit deal and keep close ties with the EU.
And she promised MPs a binding vote on forcing the government to hold a second EU referendum, as long as MPs approve the deal.
But that compromise was shot down in flames last night by the very Labour Remainers Theresa May had hoped to convince.
And today Tory MPs will push to start the process of removing her - before her deal comes before Parliament in two weeks' time.
Executive members of the Tories' backbench 1922 Committee will meet this afternoon and some members will push to force a leadership challenge.
Mrs May's critics want to rip up a 'one year's grace' rule that prevents her facing a challenge until December.
One executive member, Nigel Evans, said: "It’s game over. It’s about time the Prime Minister recognised that."
And he told The Sun: "She has U-turned on absolutely everything.
"We cannot put up with this any longer.
"I will be asking my colleagues [on Wednesday] to agree to a rule change so we can hold an immediate confidence vote if Theresa is not prepared to stand down now.”
Theresa May is due to give a statement to MPs on her compromise deal at 12.45pm where she'll likely face a barrage from Tories.
Her compromise had already faced a mutiny from Brexiteers in a Cabinet meeting lasting more than three hours yesterday.
Senior Tory Brexiteer Bernard Jenkin told BBC Newsnight: “There’s a lot of affection and respect for Theresa in the party - but a lot of anger at mistakes that she’s made.
"Today seems to have compounded the situation for her.
"That may well raise the temperature and the pressure for an early leadership election.
"It won’t happen earlier than next week, but I think it will accelerate the process."
The 1922 Committee's executive has already considered ripping up the 'one-year rule' several times. Each time Mrs May has survived - but only by a narrow majority.
Last time they met, the embattled PM agreed to set out her timetable for quitting after a vote on her new Brexit deal in the week of June 3.
Yet after her final gambit went down in flames, even loyal ally Michael Gove today had to be asked twice if she'll still be Prime Minister by Tuesday.
"I don’t think I should provide a commentary on that," he said initially - before later insisting she would be in place.
Mr Gove urged MPs to “step back” from the “storm” and take some time to “consider what the options are”.
Last night Mrs May wrote a three-page letter to Jeremy Corbyn in a "last chance" plea for him to back her compromise deal.
But Remain-backing MPs said her pledge for a second referendum vote did not go far enough.
And Mr Corbyn said her offer of a vote on a temporary customs union - not a permanent one - did not go far enough either.
He said last night: "I can't see how it will get through Parliament anyway. No we'll not be supporting it."
A No10 insider told The Sun: "It feels like checkmate now.
"They’re all too deep in the trenches to listen to anything she has to say. We really have nowhere else to go.”
As opposition mounted today, Mrs May's ally Michael Gove suggested the Withdrawal Agreement Bill (WAB) - the vehicle for her Brexit deal - could be dropped altogether.
"We will reflect over the course of the next few days on how people look at the proposition that has been put forward," he told BBC Radio 4's Today programme.
Shadow Brexit secretary Sir Keir Starmer said Theresa May should abandon attempts to get her new deal through the Commons.
"The Prime Minister needs to, today, accept that what she announced yesterday isn't going to work and pull the vote," he told BBC Radio 4's Today.
"She has still got time to say 'I do know what the central concerns of the Labour Party are and I'm prepared to put a concrete policy proposition on the face of the Bill on the issues of a close economic relationship and on the issue of a public vote'.
"She could do that, that would be a far better way forward than just allowing this vote to happen in a week or two's time and to lose it. So, I think she should pull it today and reconsider."
Tory Brexiteer Jacob Rees-Mogg also called on her to rethink, "look at the figures, look at the lack of support for her deal."
He told the BBC: "In truth the Prime Minister does not command a majority in the House of Commons."
