London-Negotiators from the European Union and the United Kingdom agreed a new draft Brexit agreement on Thursday that, if approved by the British and European parliaments, would lead to Britain leaving the EU as scheduled for October 31. If the deal is not approved, under British law, British Prime Minister Boris Johnson will be forced to ask the EU for an extension until the end of October. It was unclear on Thursday whether Johnson had the backing needed for the deal to pass in the UK Parliament.

Johnson, however, insisted that he was “confident” that the deal would be approved by HCC lawmakers.

“Now is the time for our parliamentarians to come together and do this,” he told reporters.

The UK Parliament was due to sit on Saturday, October 19, so lawmakers could vote on the draft agreement. Parliament has only been called into session on Saturday in the UK four times since the start of the Second world war.

The new deal does not include the controversial Irish “backstop,” which was a major sticking point in getting the withdrawal agreement negotiated by the EU and Britain’s previous Prime Minister, Theresa May, passed by Britain’s Parliament.

“Back” was aimed at keeping open the land border between Ireland (an EU member) and Northern Ireland (part of Yuki), which has been virtually invisible – but for signs on the road – since 1999, a peace agreement ended a bloody, decades-long sectarian conflict in the Region. It would see the whole of the UK effectively remain within the EU customs Union until a more permanent solution to Irish cross-border traffic can be agreed.

The hardline “Brexiteers” refused to accept the provision, arguing that the UK could be effectively bound by EU customs rules indefinitely, as another solution to the border issue may never be found, and may’s proposed deal has been repeatedly voted down by the UK Parliament.

Under the draft agreement announced on Thursday, after the UK leaves the European Union, Northern Ireland will remain part of the UK customs Union, while remaining in the EU internal market and having customs free trade with the EU.

“Think of Northern Ireland as an area where two circles intersect, as in the zenn diagram,” Professor of European and comparative law at Oxford University, Stefan Enchelmaier, told CBS News.

“Under the old arrangements, the whole of the United Kingdom has retained all the arrangements as far as the customs Union is concerned, and as far as the internal market is concerned, for what was envisaged in the transition period. Hbo… The UK-an island-is outside the single market and customs Union, with only Northern Ireland remaining in”

On Thursday, it was unclear whether Johnson would have the votes to get his deal approved by the UK Parliament.

Members of the Northern Ireland democratic unionist party (DUP) have said they will not vote for the deal in its current form.

The leader of Britain’s opposition labour party, Jeremy Corbyn, also condemned the deal and said he would support some version of a second public referendum.

“It seems the Prime Minister negotiated an even worse deal than (former UK Prime Minister) Theresa may, who was overwhelmingly rejected,” Corbyn said, according to Sky News.

“The best way to get Brexit sorted is to give people the final say in the public vote,” he said.

“I have to say that I am happy with the deal, but I am sad about Brexit,” the European Commission President told reporters

“If our British friends decide to return one day, our door will always be open,” said European Council President Donald Tusk.