The Fountain of Youth is discovered in some random forest in California, and Jimmy Carter drinks it and becomes 40 something again. Biden retires and Kamala loses the Primary to Jimmy Carter who promises to make the south blue again.
Jimmy Carter pulls a Grover Cleveland and beats Ron DeSantis in a massive upset that shocks the political establishment. The election is very close, and Carter wins the PV by only 1%. He does worse than Biden among minorities and suburban voters, but he gets Al Gore levels among rural white southerners. He is sworn in with Roy Cooper as his running mate.
https://www.yapms.com/app/?m=7j6g