It is difficult to see how Corbyn could win this given that the DUP will support May. Nevertheless, he is under great pressure from his party to call a vote, not because they think he will win but because he has said that if a general election is proved not to be possible then the Labour Party...
It depends partly on what amendments are passed beforehand, although the maths are opaque. For example, one such amendment would make a no-deal impossible - this might mean that some no-dealers would vote for the May deal on the basis that there is nothing to be gained by seeing it fail. (On...