Factbox - Brexit 'plan B': What happens next in parliament?

Instead, Tuesday is a chance to discover what sort of changes to her strategy would be required to win the support of parliament, so May can try to renegotiate the deal in Brussels and then ask lawmakers to approve it.May has said she wants to secure concessions relating to the border with Northern Ireland in order to win the support of pro-Brexit lawmakers in her own party and the small Northern Irish party which props up her government, who voted against her deal.Some lawmakers want to shift c