Umunna and Zeichner represent Remainers. (Don't know about the rest.) Zeichner is the MP for Cambridge and he wouldn't have won if he hadn't backed Remain. (It was a highly marginal LD/Lab seat.) I respect him for standing up for what he believes in and representing his constituents.
I'm quite fearful about this, because I think the Labour fairy tale is going to unravel. The EU has been Labour's Achilles' Heel since the referendum.
You should all feel very proud (imho)
