In Kevin Philips's The Emerging Republican Majority, Phillips outlines a majority based on the South and the Sunbelt, as made by Richard Nixon's Southern Strategy, built be Southern Whites, the disaffected White Working Class, Big Business, and the middle class.
Your Challenge is this: Create a different Republican Majority, Nixon doesn't have to be the author of it, but from 1968- 2000, the Republican Party must be the Majority Party, at least on Presidential Elections. You also must describe what happens to the Democratic Party.