UK's Labour Will Try to Topple May if Brexit Deal Rejected

British Prime Minister Theresa May walks past the EU flag at the conclusion of an EU summit in Brussels, Nov. 25, 2018.

Britain's opposition Labour Party is ramping up the pressure on Prime Minister Theresa May, saying it will call a no-confidence vote in the Conservative leader if Parliament rejects her Brexit deal on Dec. 11.

May is battling to persuade skeptical British lawmakers to back the deal agreed between her government and the European Union last month. Rejecting it would leave the U.K. facing a messy, economically damaging "no-deal" Brexit on March 29.

Labour Brexit spokesman Keir Starmer said Sunday it's "inevitable" that Labour will bring a no-confidence motion in the government if Parliament rejects the Brexit agreement. The left-of-center party says it will vote against the deal.

If May's Conservative government lost a no-confidence vote it would have two weeks to overturn the result. If that failed, Britain would hold a new national election.