Division number 142 – in the House of Commons on 7 February 2017.
A majority of MPs voted not to prevent the Prime Minister giving notification of the United Kingdom's intention to leave the European Union if the European Council have not undertaken that if the United Kingdom Parliament doesn't agree the terms of the United Kingdom's leaving of the European Union the United Kingdom's will remain an EU member under the existing terms.
Want to understand more about this vote? Read the debate that it was part of.