Rust Belt type (Detroit,Cleveland....)
These are all democrat monolith run too. Competence only comes with competition politically. You have same guys running the place for decades, this is what sets in over time.
Labour union bribe system kept in place while the industry is shipped overseas. So more reliance on same set of politicians formed....because people dont want to take responsibility for themselves.
Then the politicians find new set of things for people to attack each other on and stay divided so that no one asks meaningful questions and start to make separate politics outside of the establishment and convention.
I dont think separate states will form, but maybe more communities will move and set up new politics and community organisation at local level. States able to accomodate this and with balanced budget as possible will do best in interim and wait for the more fat-debt +kick the can ones to implode later.....then the whole system can be re-engineered to better setting (what is the proper role of federal govt vs state govt when it comes to debt, budget and overall political/media/social agenda). More local govt will win this argument at that point....in many ways this is already happening.
New "Liberalism"/progressivism (at entire federal + heavy institutional capture level) cannot continue on hypocrisy the way it has for a while now....you are supposed to have diversity of thought under the greater collective principle with proof rather than words and unfettered social engineering (to try subvert those principles even within one generation as though people forget so easy).
If identity politics is opened and waged (like was intensified on purpose during Obama tenure to distract from failure of delivering his promises made in 2008 after 2 terms of neo con Bush...both of them adding drastically to national debt and bad foreign and economic policy), then current setup fractures even more in lot of areas and the resolutions will have to shift accordingly.
Those that want to live in the 90s compromise system, move to those states and preserve those norms there. Those that want the brave new world stuff of deep blue states stay in those states. Federal govt is made to get out of the way of this as far as possible. Simple.
But US has the size and experience to work this out as messy as it might seem....and how anti-establishment things might look and sound in the process of these readjustments. How it does, we shall see.