A lot of big things could happen before the final race next fall, but this is a small snapshot of how things stand of today:
SC Primary Average: Romney 28% (+6)
National Nomination: Romney 34% (+18)
And the November elections:
WH Election: Obama 47, Romney 46
Congress: Dems 47, Gop 44
So Romney looks steady in SC, and even more steady nationally for the GOP Nomination. And the primaries from now on might be more about inflicting mutual damage among the candidates than making any significant difference for the outcome.