5 of the 10 fastest growing counties in South Carolina are trending Democratic. SC only slightly trended Republican. MO heavily trended Republican. Clinton was a weak candidate. The PVI of SC-07 is fairly close to the statewide PVI. Archie Parnell lost a close race that wasn't even expected to be competitive. In Missouri, Trump did far better than the statewide PVI. I don't think Missouri is elastic enough anymore to flip before South Carolina. Which state did Clinton do better with white voters? Which state has a larger percentage of minority voters?
South Carolina has a higher minority percentage but also a more Republican white vote.