CBS News adds South Carolina as battleground state; still Leans Republican

Anthony Salvanto, CBS News elections and surveys, told "Face the Nation with Margaret Brennan" that South Carolina has been added as a battleground state, although the state is still considering leaning Republican.

Anthony Salvanto, CBS News elections and surveys, told "Face the Nation with Margaret Brennan" that South Carolina has been added as a battleground state, although the state is still considering leaning Republican.