Sen Bill Nelson (D-FL) comes out for equality; only six lingering Dems

I'm at an event and can't easily expound or link out, but I did want to note tonight's news that US Sen. Bill Nelson (D-FL) has reversed his opposition to marriage equality and come out on history's right side. This leaves only six Senate Dems who have yet to do so.

Who will be next? Or the more provocative question: Who will be—yikes!—last?