When will South Carolina go Democratic in a presidential election?

[Indy Texas]

I think for the next several decades, South Carolina will be a "Pennsylvania" for the Democrats - a state they lose by less than 10 points and in very good years might come within a few points of carrying, that they throw piles and piles of money at, but that they never ever actually win. The high black population is never quite high enough, even with good turnout. The Charleston moderates are never numerous enough to get them over the top.