Thinking it'll be Kasich.
Really, I'm mostly curious as to when Chafee is going to endorse. He kind of did so implicitly through announcing the end of his campaign at the Women's Leadership Conference, but since he was so anti-Hillary the whole campaign, I really have trouble believing he's going all the way for Hillary.
He endorsed Rubio earlier today.
This is actually significant, because, up until now, pretty much all of Rubio's endorsements have been from congressmen to the right of your average Republican in Congress, according to 538. Now, he has the support of a prominent liberal Republican, possibly sending a clue that the RNC is ready to rally around him as the anti-Trump.