May’s Conservative government won with 325 votes versus 306.
The vote means that May will now press ahead with talking to lawmakers from all parties to try to find a consensus over how to proceed with Britain’s departure from the European Union.
May was battling to save her job after staking her political reputation on a last-ditch effort to win support for the divorce agreement she negotiated with the European Union over the last two years. Though defeat was widely expected, the scale of the rout — 432-202 — was devastating for May’s leadership.
Immediately after the vote, opposition leader Jeremy Corbyn tabled a no-confidence motion, saying it would give Parliament a chance to give its verdict “on the sheer incompetence of this government.”
WATCH: British MPs reject Theresa May’s Brexit deal