Theresa May has urged Jeremy Corbyn to back her Brexit deal, after it received a hostile response from Conservative MPs.
The Prime Minister announced yesterday that the Withdrawal Agreement Bill would include "a requirement to vote on whether to hold a second referendum" and a choice over the UK's future customs arrangements, after discussions with her cabinet.
But the deal was described as "dead on arrival" by Tory MP and European Research Group vice-chair, Mark Francois.
In a letter to Labour leader Corbyn, Mrs May wrote: "I have shown ... that I am willing to compromise to deliver Brexit for the British people.
"The Withdrawal Agreement Bill is our last chance to do so. I ask you to compromise too so that we can deliver what both our parties promised in our manifestos and restore faith in our politics."
Leadership rivals Boris Johnson and Dominic Raab were among the Tories who backed Mrs May's deal in March, but have now vowed to oppose the Withdrawal Agreement Bill when it returns to the Commons in early June.
Former foreign secretary Mr Johnson said the Bill was "directly against" the Conservative manifesto, with Mr Raab claiming it would "frustrate rather than deliver" Brexit.
In an appeal to MPs, Mrs May maintained that her deal was the only way to deliver Brexit.
She said: "Reject this deal and leaving the EU with a negotiated deal any time soon will be dead in the water."
Brexiteer Cabinet ministers are understood to be trying to persuade Mrs May to ditch the fourth attempt to pass her deal, warning the vote will end in yet another humiliation.
And the Prime Minister faces a fresh bid to eject her from Downing Street from the 1922 Committee, which meets later today.
Mrs May will face questioning from MPs in the Commons this afternoon.