I've seen in news articles and places on this forum that the legislation enacted by states following the overturn of Roe, and striking down NY's gun permit requirement will lead to a greater migration of progressives to blue states, and conservatives to red states. This seems to follow logically, but is there historical evidence to back up what seems to be "commonly thought". Dr. Ryan D. Enos in the NY Times said
As states become more red or blue, it’s politically easier for them to pass legislation. Does that create a feedback loop where more sorting happens? That’s the part we don’t know yet.
Given "a Harvard political scientist who studies partisan segregation" states "we don't know yet" I would assume there isn't historical precedent. Is there evidence to support the "common sense" theory this will happen?