Well, remember, all that area from which the Gore family comes was solid Democrat and progressive under Roosevelt for several decades. So they just didn't become Republicans because they all wanted to be bankers. They became it because they didn't like black people, and they thought the Democrats were pushing integration too fast. And that's how the great split came about, to the shame of the whole country.

On the American South's switch from Democrat to Republican. - Gore Vidal's America (2009)