MPs are demanding the chance to consider a range of alternatives to Theresa May's Brexit deal.
A cross-party group of MPs hope they will finally end the chaos over Brexit - by seizing control of the decision-making process through an amendment to be voted on Monday night.
Those supporting the plan include Redcar MP Anna Turley; City of Durham MP Roberta Blackman-Woods; Bishop Auckland MP Helen Goodman; Newcastle Central MP Catherine McKinnell, and Sedgefield MP Phil Wilson.
They have put their name to the amendment. However, many more MPs are likely to vote for it, if it is chosen for debate by Speaker John Bercow tonight.
If it is backed by a majority in the House of Commons, the amendment will lead to a series of votes on Wednesday allowing MPs to decide what the UK should do.
MPs would be free to propose motions setting out options such as a no-deal Brexit, cancelling Brexit, a second referendum or a "soft" Brexit plan, which supporters describe as Common Market 2.0.
This process is sometimes known as holding "indicative votes".
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The amendment is also backed by Conservative MP Sir Oliver Letwin, Labour MP Hilary Benn, Liberal Democrat Norman Lamb, SNP MP Stewart Hosie and Independent Group MP Anna Soubry.
Supporters of Brexit have hit back and tabled an amendment of their own, calling on the House of Commons to confirm "its commitment to honour the result of the referendum that the UK should leave the European Union".
Anne-Marie Trevelyan, the Conservative MP for Berwick-upon-Tweed, and Ronnie Campbell, Labour MP for Blyth Valley, have signed the pro-Brexit amendment.
Mrs May made a statement about the progress of Brexit this afternoon
The Prime Minister told the House of Commons that there was still not sufficient support among MPs to pass a third meaningful vote one her Brexit deal.
"It is with great regret that I have to conclude that as things stand there is still not sufficient support in the House to bring back the deal for a third meaningful vote," she said.
"I continue to have discussions with colleagues across the House to build support so that we can bring the vote forward this week and guarantee Brexit."
What happens next?
Mrs May said the "default outcome" remained leaving without a deal.
"The alternative is to pursue a different form of Brexit or a second referendum," she said.
"But the bottom line remains: if the House does not approve the Withdrawal Agreement this week and is not prepared to countenance leaving without a deal, we would have to seek a longer extension."
That would mean holding European elections and would mean "we will not have been able to guarantee Brexit".
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Setting out the choices facing MPs, Mrs May said: "Unless this House agrees to it, no-deal will not happen.
"No Brexit must not happen.
"And a slow Brexit, which extends Article 50 beyond May 22, forces the British people to take part in European elections and gives up control of any of our borders, laws, money or trade is not a Brexit that will bring the British people together."
She said her deal was a compromise which respected both sides of the argument and "if this House can back it we can be out of the European Union in less than two months".
What about tonight?
There will then be a debate on a motion which states simply that the House of Commons has considered her statement.
That's when MPs will have the chance to propose amendments.
There's also an amendment from the Labour leadership, which again calls for a series of "indicative votes" on different options. However, MPs from other parties will be reluctant to vote for an amendment in the name of Labour leader Jeremy Corbyn, and the cross-party proposal probably has more chance of success.
Voting on all the amendments is expected to begin at 10pm tonight.
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So when will Brexit happen?
EU leaders have agreed to delay Brexit until May 22 if Mrs May can win House of Commons approval for the proposed withdrawal agreement, or until April 12 if she can’t.
It means the one thing the UK knows for sure is that Brexit will not take place on March 29, the date originally planned.
But the European Commission has warned that a no-deal Brexit on April 12 is becoming "increasingly likely".
The warning came as Mrs May addressed senior ministers at a special meeting of Cabinet.
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In its statement, the European Commission said it had completed its preparations for a possible no-deal Brexit, but warned it would nonetheless cause "significant disruption for citizens and businesses".
If it crashes out without a deal on April 12, the UK will not benefit from a transition period to new arrangements, but will immediately be subject to checks and tariffs on its exports to the EU, while "significant delays" can be expected at the borders, said officials.
Will Theresa May resign?
Some Conservative MPs are calling on Mrs May to announce when she will stand down.
Tory backbencher Nigel Evans, a joint executive secretary of the influential Conservative 1922 Committee, said Theresa May should set out her plans to quit in order to get her Brexit deal through.
"Clearly a number of people do not want the Prime Minister anywhere near the next phase of negotiations, which is the future trading relationship between ourselves and the EU," he told BBC Radio 4's Today programme.
He said there should be an "orderly" process to replace the Prime Minister, with a full leadership contest rather than an interim successor.
And Mrs May's former Downing Street director of communications, Katie Perrior, said it was time for the Prime Minister to announce her departure date to get her Brexit deal through.
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Writing in The Times Red Box, Ms Perrior said: "Maybe it's time to stop finding scapegoats and admit that Theresa May and her lack of leadership has made a bad situation worse.
"With great sadness, it's time for her to swap her departure date in return for the deal. It's the least she can do."
But International Trade Secretary Liam Fox insisted that Mrs May was respected by the public, despite calls for her to go from MPs.
"What I was finding from real voters was people spontaneously saying: 'I don't understand how Theresa May puts up with the pressure, she is a great public servant, her resilience is amazing'," Dr Fox told Today.
"There seems to me to be a bigger disconnect now between Westminster and what is happening out in the country than ever before."
On Sunday, Mrs May held "lengthy" talks with prominent Brexiteer backbenchers including Boris Johnson, Jacob Rees-Mogg and David Davis at her country residence Chequers to discuss whether there is sufficient support among MPs for another vote on her deal.
But Mr Johnson claimed the Government had "chickened out" of delivering Brexit this week.
And he signalled his belief in the need for a change of leadership by asking in an article in the Daily Telegraph: "Can we really go on with a negotiating team that has so resoundingly failed?"
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Here's how many people have signed the petition to cancel Brexit in your area of the North East
