Why does every long-term Atlas prediction involve a early-to-mid-21st Century Democratic realignment? Before Trump won, the consensus was that it started in 2008, and now they have just shifted the goalposts to 2020/2024. Partisan realignments are becoming more and more rare, and there is no evidence that we are about to embark in a long-term Democratic era. In fact, the author of "The Emerging Democratic Majority" (from the early 2000s) has now recanted and said that we are entering a Republican era.
Reagan - FDR
HW Bush - Truman
Clinton - Eisenhower
W Bush - Kennedy/LBJ
Obama - Nixon/Ford
Trump - Carter