When does May bring forward the vote - which needs to be passed for the deal to take hold?
If I was in her shoes, and I _really_ wanted the vote to pass, I'd schedule it in for March 28th, the day before Brexit day. Basically saying "You either vote this through or it's No Deal".
But if she does that, how long until enough of the DUP and her own party decide that this is so self-destructive that it's worth a vote of confidence?
(I'm not sure what she thinks she's going to get from the EU which will make people happier about the backstop.)
Original post on Dreamwidth - there are comments there.