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.
A civil war will likely start in the US with several states and districts leaving to form a new union, which will likely piss off the federal government to the point of trying to stop it.
IRA style terrorism is more likely the maximum possible extent in Canada due to the fact there may not be enough dissidents for a full scale civil war.
It is almost inevitable, on the current trajectory, that the United States will divide and break up on Red/Blue lines. The problem is that the Blues only get the Northeast and the West Coast (and border area with Mexico) and the Reds get everything else.
If this does not happen, it will be because the mainstream Democrats finally break cause with the wokes and knife them in the back as a political liability. 99% of the irreconcilable problems in this country are coming from the 5-10% of the population (the wokes) that represents the most extreme Left, who are being held up and used as a battering ram by ~25%-35% additional mainstream libs. This unholy alliance is causing all the problems. So once the Democrats start losing elections, they will have to either decide to stick with Democracy and knife the wokes, or to try to overthrow Democracy in which case you will end up with a national divorce.
And Chicago, Detroit, quite a bit of Wisconsin. Nearly all of Minnesota. Not sure about Indiana or Ohio
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.