U.K. Prime Minister Boris Johnson's plans to exit from the European Union crossed a key hurdle on Tuesday. British lawmakers backed his Brexit deal in a surprising, and narrow, 329-to-299 vote. The vote "in principle" for the Brexit plan isn't the final world on Britain's three-year saga to divorce from the EU trade bloc, but comes after a key setback a day ago. Speaker of the House of Commons John Bercow on Monday refused to allow a "straight up-and-down" vote on Brexit because lawmakers elected to delay approving the the vote on Saturday, and parliamentary rules bar the same measure from being considered a second time during a session of Parliament unless something has changed. Johnson still faces a second vote the government's schedule for debate and possible amendments. The votes come just nine days before Britain's scheduled departure date. Sterling fell 0.1% against the U.S. dollar, last changing hands at $1.2916, according to FactSet data. Meanwhile, the FTSE 100 closed up 0.7% on Tuesday.