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Theresa May's Brexit deal was defeated by 432 votes to 202 — a majority of 230. Scores of her own backbenchers rejected the deal, but she did pick up a handful of opposition votes.
Using POLITICO Pro Intelligence, we've analyzed how the vote was lost.
Against (432)
For (202)
The rejection marked a dramatic shift from the Article 50 trigger vote in February 2017.
Against (114)
For (498)
MPs who voted for Theresa May's deal are depicted below in green and those voting against are in red. The second map looks more closely at constituencies in London.
The constituencies in gray are represented by MPs that did not vote (Paul Flynn, who was ill and did not attend); the speaker (John Bercow) and his three deputies (Lindsay Hoyle, Eleanor Laing, Rosie Winterton); the tellers appointed to verify the count when there is a division and not counted in the total vote (Wendy Morton, Iain Stewart, Vicky Foxcroft, Nick Smith) and the seven Sinn Fein MPs, who do not take their seats in Westminster.
SOURCE: POLITICO Pro Intelligence
Roughly half of the defeats suffered by British governments since 1918 have been by 10 votes or fewer and around two-thirds by 20 votes or fewer. Below are the largest government defeats since World War I, with May's Brexit deal now the highest on record*.
*The number of votes against minus the number of votes for the government.
SOURCE: Political scientist Philip Cowley writing in Prospect