Look at it like a marriage that has broken and cannot be reconciled. We could very well see a break-up of this country along red states/blue states, but that is me.
I agree. A wide variety of sources have pointed out that differences in political philosophy seem to match the differences in geographical location. Thus the seacoasts - east and west - are more liberal while the south and the middle of the country are much more conservative. There are plenty of exceptions in both cases but the rule still seems to stand.
Dividing this country into several smaller, more stable countries would be a problem unless the people of the interior states could come to some sort of agreement with the Canadian provinces to their north. Since Canada has many of the same problems we have with the eastern population centers overvoting the western, more conservative provonces, there might be sufficient grounds for collaboration.
Regardless of how or where the divide occurs, it won’t be peaceful. Whereas the first war of secession was fought with the tactics of the previous war (ranks of men firing into opposing ranks at close range) this next war will be little more than a war of assassination. Small groups on both sides will target key players of the opposing group. I doubt many of those “targets” will be military figures. Instead, politicians and media personalities will bear the brunt of the efforts of those we call the “FreeFor” while local leaders of that “FreeFor” will have the increased attention of the government forces.
It won’t be pretty.