The parties were not as polarized back then and in particular the Southern Democrats and Rockefeller Republicans were both powerful factions in their party. Str

The parties were not as polarized back then and in particular the Southern Democrats and Rockefeller Republicans were both powerful factions in their party. Strom Thurmond being the most notable example of the former, pre-1964: https://www.theguardian.com/commentisfree/2013/aug/28/republicans-party-of-civil-rights https://www.theguardian.com/commentisfree/2013/aug/28/republ...