LONDON: British lawmakers defeated Prime Minister Theresa May’s Brexit divorce deal by a crushing margin on Tuesday, triggering political upheaval that could lead to a disorderly exit from the EU or even to a reversal of the 2016 decision to leave.

Parliament voted 432-202 against her deal, the worst parliamentary defeat for a government in recent British history. Scores of her own lawmakers – both Brexiteers and supporters of EU membership – joined forces to vote down the deal.

Opposition Labour leader Jeremy Corbyn promptly called a vote of no confidence in May’s government, to be held within 24 hours.

With the clock ticking down to March 29, the date set in law for Brexit, the United Kingdom is now trapped in the most profound political crisis in half a century as it grapples with how, or even whether, to exit the European project that it joined in 1973.