Bmaz at Emptywheel is expecting a win for the plaintiffs:
Walker is very detailed and very smart and crafty. He will lock in and protect his decision to every extent he can, and trust me Walker is very good at this. One of the best I have ever seen. Ted Olson, David Boies, Plaintiffs Perry et. al and fans of Constitutional equality everywhere could not ask for anything more.
We'll know this afternoon.