"Johnson scored a landslide victory. Goldwater took his home state of Arizona and just five others: Louisiana, Mississippi, Alabama, Georgia and South Carolina. It was the first time those Deep South states had voted for a Republican presidential candidate since Reconstruction -- and marked the moment when, for many Southern voters, the GOP became the party of white racial grievance.
It wasn't "a different generation from those who fought integration" that made the switch. Integration was the whole reason for the switch."
washingtonpost.com