The choice is between this deal and not having this deal. "Not having this deal" does not mean no deal. It could mean no brexit. A vote to reject the deal triggers a request for an extension, which will be granted, especially if a tie to a second referendum can be made. No EU nation or body wants us to leave, after all. The intervention by Juncker today was most unwelcome. He's going to have us thinking that unelected bureaucrats such as he can blackmail our sovereign parliament. I'm surprised and disappointed with him. He spoke out of order. He is clearly seeking his legacy. Poor show.