If I were in the Speaker of the House of the South Carolina legislature I would stand before the house and announce that we will with all due respect to the court ignore their ruling because the court is acting outside their jurisdiction.
The sole power of how, whet and when elections are held is granted by the constitution to the legislature of the states.
Nowhere is any power over elections given to the courts.
Civil rights legislation and court decisions from the "integration era" do precisely that.