I'd imagine a common theme would be for red counties in deep blue states to leave and join their light blue neighbors, which may shift them red. (Or vice versa.

I'd imagine a common theme would be for red counties in deep blue states to leave and join their light blue neighbors, which may shift them red. (Or vice versa.) For example if upstate NY joined Pennsylvania, then the D senator from PA would very likely lose. Or if (Republican-leaning) inland California joined Nevada, then Nevada would probably tip red. Or maybe (heavily blue) Jacksonville and Gainesville get fed up with DeSantis, and leave Florida for Georgia, cementing GA as a solid blue state.