The results were announced by Graham Brady, a member of parliament who chairs the 1922 Committee, which represents Conservative lawmakers in the House of Commons.
The vote was 200 vs. 117.
Voting by secret ballot began at 6 p.m. local time (that’s 1 p.m. ET) after May made her final pitch to lawmakers promising them she wouldn’t fight the next general election in 2022.
A pro-May MP told CNN the Prime Minister “got a real grilling, but overall solid support” as she made her case to MPs.
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May was forced to postpone a vote on the deal on Monday when it became clear her bill would face a humiliating defeat.
It buys her time: The Prime Minister’s victory protects her from another leadership challenge from within her own party for 12 months.
But the result will not offer any assurances to the Prime Minister’s supporters that she is able to get her all-important Brexit deal through the UK’s Parliament.