Segregationist George Wallace won 5 states (46 electoral votes) in 1968.
Trump attracts the same kind of voter and will probably also win those five states: Alabama, Arkansas, Louisiana, Mississippi, and Texas.
Richard Nixon, Republican
301 electoral votes
32 states
Hubert Humphrey, Democratic
191 electoral votes
13 states + DC
George Wallace, American Independent
46 electoral votes
5 states