I am not an American, so don't have a clear picture of how the situation is over there (does sound bad), or how likely it actually is for something like a Civil War to break out, but I am hearing about it a lot from all sorts of people.
On the other hand, nothing of the sort seems to be happening, even though the US is supposedly being destroyed, stolen elections, inflation, tensions everywhere, left and right seemingly incapable of coexisting anymore, immigrant invasion, LGBT shit everywhere, people's kids groomed everywhere, and so on.
If all this is not enough, then what will it take? How would it happen? Who would fight with whom?
Based on the fact that nothing has happened so far with all of the above, and more, it sounds like nothing will ever happen.
And Chicago, Detroit, quite a bit of Wisconsin. Nearly all of Minnesota. Not sure about Indiana or Ohio
There will be a Great Migration from Blue to Red states. It's only just starting.
I'll be happy to see more than half of them leave. But if you let them in, your states will turn purple at the very least. And that's without the weather and physical environment. A purple/blue state with hellish conditions is the worst of all worlds.
They won't get blue islands surrounded by red states. Those states will simply be forced into minority status in the red state majority nation. Any libs who don't like it, can emigrate.
The only solidly blue areas are: NE coast - Maine down to Washington DC. & the whole West Coast. States like VA and PA and NY would fracture, since the large majority of the western parts of those states are conservative.
The problem with liberals is that the real estate footprint they occupy in the country is very very small since they overwhelmingly concentrate in big cities. In any national divorce, none of those rural areas will consent to libtard governance, and they will have a right wing army backing their secession.
Maine and New Hampshire will have to expel the NPCs to survive, meaning there may well be red areas there.