2020:
The Democratic ticket (let's say Harris/Bullock) wins a closer than expected victory over Trump, who presided over a recession over 2019-2020. The Democrats hold the House and gain the Senate.
2024:
Despite losing the Senate and barely holding onto the House, Harris/Bullock wins re-election over some faux Trumpist.
2028:
A larger recession occurs in 2025-26, causing the Dems to lose Congress. Tom Cotton wins election due to the poor economy.
2032:
Pres. Cotton handles climate disasters poorly, and a young left-wing Midwestern Senator wins in a landslide. This is the first time Ohio votes for the Democrats since 2012.
2036:
A charismatic female Republican governor from the South defeats the incumbent who fails to address the climate disasters affecting southern states. The revival of Detroit and other Rust Belt cities brings Michigan back into the solid Democratic column. Rhode Island votes for the GOP for the first time since 1984.
2040:
A popular Democratic Senator from Texas defeats the incumbent after a recession starting in 2037.
(And yes, an incumbent President loses re-election in 2032, '36 and '40)