This is a topic that’s been ‘out there’ for some time—probably since Trump’s inauguration, when Antifa hit the streets of DC. The classic sign of an emerging revolutionary environment is, after all, the resort of a major political party to violence to advance its goals.
The Dem party has clearly been taken over by an extreme faction that views most of the populace of America as enemies and does not shrink from violent rhetoric—including condoning actual violence. Obviously the attempted assassination of Steve Scalise (and others), the widespread Antifa and BLM violence (condoned and encouraged by Dems), the false claim that Trump was a Russian agent, the purge of normal Americans from the military, are all typical revolutionary preliminaries.
We have now moved to a new stage, with threats of violence being directed at the judiciary, the constitutional third branch of government. However, in the background—largely unmentioned by the media—is a wave of firebombings directed at pro-life offices and churches. My working assumption is that all the talk of “white supremacist” movements is largely a cover for hatred and violence against Christians.
Once again we see that the Dem party refuses to condemn this new form of violence, directed against a majority of the populace, if you consider polling results. For example:
Pelosi pressed on whether Dem rhetoric fueling violence against churches, pro-life clinics
First note that Pelosi is obviously blaming the victims of the attacks for the violence:
House Speaker Nancy Pelosi, D-Calif., was pressed on Thursday whether Democrats' rhetoric about the leaked Supreme Court draft opinion that would overturn Roe v. Wade. is fueling violence against churches and pro-life clinics.
Pelosi was asked by reporters at her daily press conference whether she believes the rhetoric coming from the blue party is what is driving the attacks on pro-life pregnancy centers and churches plaguing the country.
The speaker — a Catholic who was denied communion by the San Francisco archbishop for her abortion views — did not condemn the attacks, instead saying the politicization of the abortion issue "is uniquely American."
Matt Whitlock offers one obvious response directed at the reasons that abortion is so “politicized”—by most world standards, American law with regard to abortion is remarkable barbarous and extreme. As is the rhetoric employed by proponents—and I use that word advisedly—of abortion:

The drive of a radical minority to suppress dissent from its positions and to drive the majority of the population from all positions of responsibility in societal institutions and professions, certainly appears to be a revolutionary goal. Not long ago Zhou/Brandon “joked” on TV about jailing his political opponents—with no outrage apparent from the MSM. When the rhetoric is coupled with the deployment of actual violence against dissenters, with different standards of criminal justice applied to discrete political groupings, we have arguably moved into an active and developing pre-revolutionary situation. November 2022 is a time period to watch.
My guess is things are going to be ugly for a while. But a split simply is not viable. In 1861, the seceding states at least looked like a contiguous block (it wasn't perfect, that's how we ended up with the state of West Virginia). Here is a map of the 2020 presidential election, by county. https://brilliantmaps.com/2020-county-election-map/
I like this map because it uses 5 shades of both red and blue to show the strength of the vote. There are only four states that are completely blue--Hawaii, Vermont, Massachusetts, and Rhode Island. I live in Indiana, which has five blue counties. Three of those are dominated by college towns--Purdue, IU, and Notre Dame. The other universities in the state were only able to make their counties lighter red. The other two blue spots are Marion County (Indianapolis) and Lake County (Chicago suburbs).
As you look around the map, you can spot all the major cities. There are a few rural areas that are blue, but not nearly as many as the red ones.
The reason I think a split is not viable is a strategic reality: you have to be able to control the countryside. That was why the British lost in the American Revolution. They could take any city, but they couldn't control the surrounding countryside. The Southern Campaign was the last attempt by the British, and it failed. Cornwallis tried to use his main army and two detached forces to gain control; the battles of Kings Mountain and Cowpens wiped out both of his detached forces. Cornwallis barely managed a win at Guilford Courthouse, but after a few more scrapes he headed for the coast at Yorktown, hoping the British fleet could bail him out--but the French fleet and Washington's army got there first.
Even in modern warfare, controlling the countryside is still an issue. It was a major problem in Vietnam, and even with satellites and drones, it was still a problem in Afghanistan!
Yes, modern cities have a lot of the population. That is an advantage in elections; it will be a serious disadvantage in a civil war. All of those city dwellers will expect to have their electricity stay on, their furnaces to have gas and oil, and their grocery stores to have food. Whoever controls the countryside can cut a lot--or even most--of that off. A lot of the power plants are outside the city limits--California gets over 20% of their electricity from out of state! Most food is trucked in from outside the city--most grocery stores don't have much more than a 3-day supply on hand. How much food do they grow within the city limits of NYC or Washington DC?
Can they do a Berlin-style airlift? Doing that for one city in 1947 was one thing; doing it for 30 or 40 cities is not nearly as possible (especially in a shooting war!).
So things could get ugly for a while, but the long-term result is already knowable. How long it will take for the hard left to face reality is what we will have to see.
The author of this Washington Examiner opinion piece is a former FBI agent, Thomas Baker. He has a book coming out later this year titled The Fall of the FBI.
https://www.washingtonexaminer.com/restoring-america/courage-strength-optimism/has-the-fbi-become-a-threat-to-democracy