I'm somewhat surprised that South Carolina didn't even hold a popular vote for presidential elections until 1868, when they were forced to.
Why is it surprising? The same was true with the governor until 1865.
Well... most states had popular vote by the 1820's. Its just sort of surprising that it took that long for it to happen.
Well, you see my good man, South Carolina is not "most states," she is truly a diamond among the rocks.
Explain why not having a popular vote for decades after other states makes one a "diamond among the rocks."