The Commons Library has released a roadmap of what will happen over the next few weeks if Theresa May’s Brexit deal is voted down or agreed.
The independent research unit based in Parliament issued the flow chart showing what could happen after the House of Commons makes its decision on December 11.
Should the deal make it through parliament, and receives Royal Assent before Article 50 expires, then the UK will leave the EU with the government’s deal.
However if the meaningful vote is rejected, the Prime Minister will have to make a voluntary statement, parliament will vote on motion based on the government’s statement and if that is rejected then the UK leaves the EU without a deal.
According to the chart, if an approval motion does not pass the first time, there is nothing in the EU (Withdrawal ) Act that prevents the Government from bringing forward another approval motion, and making another attempt to get it through.
The UK could also leave the EU without a deal if the meaningful vote is approved however the European Union withdrawal agreement bill does not receive Royal Assent before Article 50 expires.
"A few days before the vote in the House of Commons, it is becoming more and more clear that this deal is the best possible - in fact, the only possible one," Mr Tusk told the the G20 summit in Argentina.
He ruled out any renegotiation by the EU if parliament voted down the deal on December 11.
He said: "If this deal is rejected in the Commons, we are left with... an alternative: no deal or no Brexit at all. I want to reassure you that the EU is prepared for every scenario."
Mr Tusk will chair an EU summit two days after the crunch vote on a deal that Mrs May has also said is the best the UK can get.
On Saturday, world leaders at the G20 summit in Argentina urged Theresa May to stay to avoid a no deal Brexit.
Australian prime minister Scott Morrison and Japan’s prime minister were among those to urge Theresa May to maintain stability.
