MPS could be forced into another election if they vote for a soft Brexit this week, Steve Barclay has warned.

The Brexit boss threatened to drop Britain into another chaotic vote if they choose to ignore their party manifestos and try and keep Britain tied closely to the EU.

The Tories promised in 2017 to leave the single market and customs union, but dozens of them are still pushing for their own plans as the answer to the Brexit deadlock.

This week MPs are set to be allowed a string of so-called "indicative votes" on the future of Brexit to try and find out what Parliament wants.

But Mr Barclay said this morning: "The risk of a general election increases because you potentially have a situation where Parliament is instructing a situation counter to what it was elected to do."

And he added: "There is a constitutional collusion... The votes would not be binding."

The PM's deal is looking doomed this week and she might not even put it back up for a third vote if she thinks she can't get it through.

No10 figures are said to be pinning hopes on a "last chance" bid to win over Brexiteer Jacob Rees-Mogg.

One told the Mail on Sunday: "No10 are banking it all on Jacob.

"If he can persuade colleagues to back the deal, we may still - just - get over the line.

"It's the last throw of the dice."

If the powerful chair of the ERG group were to switch sides, he could sway over many of his colleagues and has said he will keep an open mind as to how he will vote in a third crunch Commons clash.

He told LBC last week that he'd rather go for No Deal than Mrs May's deal, but he would back the PM if it were a choice between that and no Brexit altogether.

Today Brexiteers Mr Rees-Mogg, Dominic Raab, David Davis, Iain Duncan Smith, Boris Johnson and Damian Green are set to meet the PM at Chequers.

And Brexiteer Nigel Evans said he would back the PM if she says she steps aside.

He told the Sun last week she would have to go if she signed up to a long extension.

Today he wrote: "The Prime Minister must now declare the timetable of her departure to get this most imperfect but necessary accord over the line. She must stay in office for only as long as it takes to win her deal.

"Trying to cling on to power will endanger her deep desire to deliver on the referendum result and will only end in tears."

The DUP last week said they were standing firm against her and were not convinced she is doing enough to get them onside.

Meanwhile, Tory chairman Brandon Lewis begged Mr Corbyn to get behind the deal and deliver on Brexit for the people.

He wrote in the Sunday Express: "The Prime Minister throughout this process has been guided by the passionate belief that she must act in the national interest and I implore the Labour leader to now follow suit.

"That means working together and seeking to compromise in the national interest, not endlessly manoeuvring to advance your own ambitions."