This is a cross over state. Whatever and whoever wins should be taken with a grain of salt. It is time for registered voters to be able to vote in states so the results are coming from actual Republicans instead of fraud.
I don't think there will be much cross over voting this time of the mischief making variety. The Dim contest is too tight and Hillary is depending on the SC Dim voters to give her a win and some amount of momentum.
Any Dims crossing over to vote for a Republican will probably be a legitimate supporter of the Republican they vote for.