“In 1959, Vice-President Nixon, speaking to members of California’s Commonwealth Club, was asked if he’d like to see the parties undergo an ideological realignment—the sort that has since taken place—and he replied, “I think it would be a great tragedy . . . if we had our two major political parties divide on what we would call a conservative-liberal line.” He continued, “I think one of the attributes of our political system has been that we have avoided generally violent swings in Administrations from one extreme to the other. And the reason we have avoided that is that in both parties there has been room for a broad spectrum of opinion.” Therefore, “when your Administrations come to power, they will represent the whole people rather than just one segment of the people.”