Brexit: Vote for 'improved deal' or face 'political crisis'
The Cabinet Office minister says the prime minister has secured "legally binding" changes to her Brexit deal.
In a statement, David Lidington told the House of Commons: "There will be a fundamental choice: To vote for the improved deal or to plunge this country into a political crisis."
Shadow Brexit secretary Keir Starmer has questioned whether any changes have been made to the withdrawal agreement.
Read more: 'Legally binding' changes to EU deal agreed