The great irony is that one almost certain vote against marriage equality will come from Clarence Thomas, a black man married to a white woman, whose marriage wouldn't have been possible if his "states rights" position had carried the day when Loving v. Virginia was decided.
The republican party has completely sided with the religious reich on the wrong side of history. You'd think that when the Westboro Baptist Cult supports your position, it's time to re-think that position, but no, the republican presidential hopefuls are falling all over themselves to prove that they are more anti-gay than the other guy. Fuck them all and anyone who votes for them. This shit is personal. They decide today if my marriage to Clay is valid. The Court typically meets and votes after oral argument. On the "big issues" there is likely to be little or no discussion, everyone's position is already pretty much set in stone. So chances are that this has already been decided.