May’s Compromised Brexit Plan Get Green Light After Showdown With Lawmakers

Pressure Group Avaaz stage a Brexit vote protest urging 12 Tory rebels to be "superheroes" by voting to overturn government plans on June 20, 2018 in London, England. Dan Kitwood/Getty Images

LONDON—Prime Minister Theresa May won a crucial Brexit vote in Parliament on Wednesday, keeping her divided government’s plans to end more than 40 years of British partnership with the European Union on track.

After pro-EU Conservative lawmaker Dominic Grieve said he would support the government’s proposal for a “meaningful vote” in Parliament on Britain’s exit, a potential rebellion that could have undermined May’s authority was averted.