Ohio and IA are not going to be as GOP-friendly as many think. Underrated chance of them flipping back, especially if Biden gets the nomination.
If they flip back that will probably the last time ANY DEMOCRAT wins there for the forseeable future. The dice has already been cast in 2016 which was to some extend a realignment Election. The Democrats will get clobbered in MN, IA, OH, MI, WI, and PA in the future. The Midwest is GONE for them because their Base Vote (Cities, AA) is shrinking in those States.
The Future for the Democratic Party lies in the Sunbelt. The Question then is: Which Region is changing faster, the Sunbelt or the Rustbelt. Democrats will have a massive Electoral Vote Problem on their hands come 2024 and beyond.