Oh, I see.
For the foreseeable future, it won't. Of all the GOP's deep/tidewater south conquests, SC is the safest. It lacks the slow African-American increases of LA/MS/AL or the rapid urban growth of NC/VA/GA. Instead, its fastest growing areas are Conservative places like Greenville-Spartanburg, the Charlotte suburbs, or Myrtle Beach.
I thought New England transplants were to have a role in a leftward shift.
In the Charleston area yes, but Charleston doesn't have the same kind of influence that NOVA or the research triangle has.