Complex sentence: Such rivalries affected the Moral Majority's grassroots efforts, like in South Carolina where the Moral Majority had no presence because Bob Jones University's religious network had already organized the state's independent Baptists.
Split into simpler sentences: Such rivalries affected the Moral Majority's grassroots efforts. In South Carolina, the Moral Majority had no presence because Bob Jones University's religious network had already organized the state's independent Baptists.