Prime Minister Boris Johnson was headed for a showdown Tuesday with lawmakers who want to put the brakes on his drive to push his European Union divorce bill through the House of Commons in just three days and take the U.K. out of the bloc by Oct. 31.

Johnson said that if Parliament imposes a longer timetable and “decides to delay everything until January or possibly longer,” he will withdraw the bill and call a vote on holding a snap general election.

“I will in no way allow months more of this,” said Johnson, who took power in July vowing that the U.K. will leave the EU — “do-or-die” — on Oct. 31. His only hope of doing that is to pass the Brexit-implementing bill through the U.K.’s fractious Parliament before then.

Johnson’s announcement piles pressure on lawmakers as they consider whether to approve the government’s legislation, which would finally take the U.K. out of the EU — more than three years after voters opted to leave the bloc.

The bill faces two votes Tuesday, with lawmakers first being asked to approve it in principle, followed by a vote on the government’s schedule for debate and possible amendments.

Johnson said backing the bill would allow lawmakers to “turn the page and allow this Parliament and this country to begin to heal and unite.”

Labour Leader Jeremy Corbyn said his opposition party would not support Johnson’s Brexit deal or his timetable to pass the legislation for it through Parliament.

Labour Party Leader Jeremy Corbyn said Tuesday that his opposition party would not support Johnson’s Brexit deal or his timetable to pass the legislation for it through Parliament. (UK Parliament/Jessica Taylor/Handout via Reuters)

“My own view is that we should vote against this bill this evening,” he told Parliament at the start of a debate on approving the legislation Tuesday.

“My recommendation would be to vote against this bill,” he added, saying the party would also oppose the so-called program motion, which sets the timetable for passage of the legislation through the House.

9 days until departure from bloc

While many analysts expect the bill to be approved, lawmakers may reject the three-day timetable because of concerns it doesn’t provide enough time for scrutiny of the 115-page document, which sets out the terms of the U.K.’s departure from the 28-nation bloc.

Major bills usually take weeks or months to pass through Parliament, giving time for line-by-line scrutiny by lawmakers.

Green lawmaker Caroline Lucas tweeted that lawmakers “had more time to debate the Wild Animals in Circuses Act” than they will to decide the future of 65 million people.

Ominously for the government, some lawmakers who support the Brexit deal said they would vote against the short timetable.

“Unless you are prepared to contemplate more expansive debate, there is not the slightest possibility of considering the deal that has been obtained within the time available,” Ken Clarke, a senior lawmaker recently ousted from Johnson’s Conservative Party group in Parliament, told the Guardian newspaper.

The showdown comes just nine days before the U.K.’s scheduled departure date. Johnson’s government had sought a “straight up-and-down vote” Monday on the agreement he struck last week with the 27 other EU nations laying out the terms of the U.K’s exit.

But the Speaker of the House of Commons, John Bercow, refused to allow it, because lawmakers voted to delay approving the Brexit deal on Saturday, and parliamentary rules bar the same measure from being considered a second time during a session of Parliament unless something has changed.

Bercow’s ruling plunged the tortuous Brexit process back into grimly familiar territory: acrimonious uncertainty.

Politicians still squabbling over terms

Johnson’s Conservatives hold just 288 of the 650 House of Commons seats, so he will need support from opposition and independent lawmakers to pass the bill — if, that is, Parliament approves the timetable on Tuesday.

The bill turns the deal Johnson struck with the EU into law. It sets out the terms of the U.K.’s departure, including measures to maintain an open border between Northern Ireland and EU member Ireland.

It also enshrines the right of U.K. and EU citizens living in the other’s territory to continue with their lives, and sets out the multi-billion pound payments the U.K. must make to meet its financial obligations to the EU.

European Council President Donald Tusk that the decision on prolonging Brexit for three months after the Oct. 31 deadline ‘will very much depend on what the British Parliament decides or doesn’t decide.’ (Piroschka van de Wouw/Reuters)

It also confirms a transition period lasting until at least the end of 2020 — and possibly 2022 — in which relations will remain frozen as they are now while a permanent new relationship is worked out.

Opposition lawmakers plan to seek amendments that could substantially alter the bill, for example by adding a requirement that the Brexit deal be put to voters in a new referendum, or by requiring the government to extend the transition period until a new trade deal with the EU has been agreed.

The government says such major amendments would wreck its legislation and it will withdraw the bill if the opposition plan succeeds.

With the Brexit deadline looming and politicians still squabbling over the country’s departure terms, Johnson has been forced to ask the EU for a three-month delay to the departure date.

He did that, grudgingly, to comply with a law passed by Parliament ordering the government to postpone Brexit rather than risk the economic damage that could come from a no-deal exit.

European Council President Donald Tusk said Tuesday that EU leaders “will decide in coming days” whether to grant another extension to the deadline for leaving the bloc, but said their decision depends on developments in London.

Tusk said Tuesday that the decision on prolonging Brexit for three months after Oct. 31 “will very much depend on what the British Parliament decides or doesn’t decide.”

France also weighted  in on the U.K.’s request to seek an extension, with its foreign minister saying he sees no grounds to extend Brexit’s deadline

Jean-Yves Le Drian told the French parliament on Tuesday that “at this stage, we consider that there is no justification for a new extension.”