I see in my lifetime that this USA could very well break up along red/blue states.
It's not nearly that simple.
For example, Pennsylvania is, geographically, overwhelmingly conservative.
Yet demographically, the urban looter sewers in the corners consistently manufacture enough fraudulent 'votes' to disenfranchise the rest of us, primarily Somalia-on-the-Delaware, Filthadelphia.
If it gets to that point, many a fascist invader bastard will come into the mountains and valleys of the interior and never come out again.