It had been pegged as the biggest week in politics for decades, with Theresa May finally set to face off against MPs on her controversial Brexit deal.
The prime minister had been due to put her deal before parliament on Tuesday evening, with MPs given the chance to cast their so-called “meaningful vote” on whether the UK should adopt the divorce deal agreed by May and EU leaders.
But after weeks of speculation over how the embattled prime minister might get her deal through the Commons despite criticism from all sides (including her own MPs), it seems like May has hit the brakes.
After an emergency conference call with her cabinet, and amid reports that the PM would delay the key vote on her Brexit deal, it was announced that May will make a statement to MPs in the Commons this afternoon.
It comes after the Sunday Times reported that the Tory leader was planning to return to Brussels to “handbag” EU leaders into a better deal.
Here’s your guide to what will be a historic week in British politics, however it ends.
Why might May delay the vote?
The prime minister is facing an uphill battle to get her deal through parliament, with the Northern Ireland backstop seen as a serious hurdle by many MPs.
More than 100 Tory backbenchers have signalled they will not support the deal, as had May’s Northern Irish DUP allies. Labour is also opposed.
Losing the vote could well cost May her leadership of the party, with senior Tories jostling for position over the weekend in anticipation of a possible contest to replace her.
The former foreign secretary Boris Johnson, former work and pensions secretary Esther McVey, former Brexit secretary Dominic Raab and the current environment minister Gove have all publicly failed to rule out leadership bids.
When might the vote eventually take place?
It’s not clear when the vote would be rescheduled if it is indeed delayed. With the House of Commons set to break on December 20 for Christmas, there’s not a lot of time if May and her team decide to squeeze it into the schedule before the end of the year.
What’s happening with the debate?
On Tuesday, MPs began five days of debates ahead of what is described as the “meaningful vote” on May’s Brexit deal.
The Withdrawal Agreement they are debating outlines the terms on which the UK will leave the EU and the desired future relationship.
Would May get enough votes if the meaningful vote took place on Tuesday?
Some 20 Conservative MPs have said publicly they will vote against May’s deal, 45 have said they will not vote in favour, and more than 20 have said they are unhappy with it. Their unease comes from, as they see it, the agreement aligning the UK too closely with the EU, and they claim May is set to deliver a Brexit “in name only”.
Given that May doesn’t have a majority in parliament, she would be relying on support from opposition parties. May’s minority government ally, the Northern Irish DUP, who usually vote with the government to help them pass legislation, has also expressed its own concerns with how the deal risks separating the island of Ireland from the mainland as a trading territory.
The Labour Party, the official opposition, has also declined to approve May’s Brexit deal, saying the have concerns about the impact on jobs and Northern Ireland.
The bottom line is this: the chance of the deal being approved with the simple majority of 320 of the 639 MPs eligible to vote is highly unlikely.
What are the amendments?
The vote – or votes – may not be limited to the terms of May’s deal. Labour has tabled an amendment outlining how MPs will “pursue every option” that prevents the UK leaving the EU on the terms of May’s deal or leaving without any deal at all.
Tory and Labour backbenchers have also put forward something similar, and there appears to be united front against the UK quitting the EU without any deal – or what is colloquially referred to as “crashing out”.
Indeed, on the first day of debates, MPs voted for a motion that means if May’s Brexit is voted down next week, MPs can effectively instruct ministers on what to do next and amend her “plan B” option.
What happens if she wins the vote?
In the unlikely event that scores of MPs from across the political spectrum swing behind the embattled prime minister, it will allow the government to introduce the EU (Withdrawal Agreement) Bill to the Commons either before Christmas or after recess (the holiday for parliament), in January.
While no guarantee of the legislation passing, it would suggest an orderly procession towards the EU exit doors.
What happens if she loses the vote?
You would expect Theresa May’s premiership to be over, right? While that’s a likely outcome, it is not the only one. These are the most likely scenarios.
– She could try again
This would depend on the margin of her defeat.
The European Union has been adamant this is a ‘take it or leave it’ deal that cannot be renegotiated. But if faced with the threat of a calamitous no-deal Brexit and following a narrow Commons defeat, May might fancy testing their resolve and seeing if she can get at least some cosmetic changes to appease enough MPs to win a second vote.
– Theresa May quits
May herself has been adamant that she will stay on as prime minister regardless of the result. But a defeat by something in the order of 200 votes - which would represent a rebellion by scores of her own MPs - and it could be the most elegant way out.
– May forced out by a Conservative rebellion
Conservative MPs most strongly opposed to May’s deal have already failed to oust May, struggling to muster enough support to trigger a leadership battle two weeks ago. But once the vote is over, other disgruntled Tory politicians could make their move.
– Second referendum
Yes, taking the deal to the public is an option. May has ruled it out, and Labour has backed the idea - but only if they do not get a general election. It would possibly require an extension to the two-year timeframe to agree a Brexit deal, but even a senior Conservative has suggested another referendum could logistically be held by the end of May (the month, that is).
– May calls another general election
The ‘Hail Mary’ pass. The Prime Minister could hope that voters will - via the ballot box - back her plan. Her fellow Conservatives are anxious to avoid this route after the 2017 election resulted in a hung parliament and a resurgent Labour Party under Jeremy Corbyn.
– Labour tries to force an election