Ronald Reagan's first great victory in the 1966 California governor's race is one of the pivotal stories of American political history, a victory that seemed to come from nowhere and has long since confounded his critics. Just four years earlier Governor Edmund "Pat" Brown was celebrated as the "Giant Killer" for his 1962 victory over Richard Nixon, and his liberal agenda reigned supreme. Yet in 1966 political neophyte Reagan trounced Brown by almost...