Britain's Brexit drama: What next?

Even the most optimistic of Theresa May's allies are preparing for her to lose next week's crucial House of Commons vote on her Brexit deal. After three crushing defeats for her government earlier this week, and with her Brexit plans opposed by MPs in all parties, the mood of Parliament is against her. The question is by how much will the Prime Minister lose that vote next Tuesday -- and current predictions are that it will be a very heavy defeat. So what might happen next?