George Wallace ran for president as part of the American Independent Party and won 5 states, all in the south. (Arkansas, Louisiana, Mississippi, Alabama, and Georgia)
The presidential election of 1968 was eventually won by Republican Richard Nixon.
In the 1948 presidential election, the election which saw Harry Truman elected president despite his predicted defeat, Strom Thurmond won 4 states as a member of the States’ Rights Democratic Party (known as the Dixiecrats). All 4 of these states were in the south as well. (Louisiana, Mississippi, Alabama, South Carolina)