The Left is consolidating power. Their population replacement strategy is working, it is only a matter of time until conservatives can't win a POTUS election, and then the Senate will be out of reach too.
The obvious "way out" is that we lose.
That is the libs run the table, they get every little thing they want enacted into law and forced on the rest of us.
To some extent we are primed to accept that - it's the way things have always worked.
37 states had elections on gay marraige, 35 banned it. We have gay marriage in every state now. The list is long of Lib victories and Conservative capitulation.
The idea of a armed rebellion is maybe fanciful at this point. But short of that I don't see how the right wins. We elected Trump, and he's been tied up in knots by the Left who do not honor the idea of a democratically elected leader if it's not one of their own.
What would such a conflict look like with no clear geographical or physical boundaries between the parties?
There is an extensive fictional literature of Civil War II, I have many of the books from the genre listed out on my profile page, with pocket reviews.
Many people think we are in Cold War II (and have been a couple of decades). We have lost it. Things will carry on. As I mentioned somewhere above, the strong, conservative, pro-American, post-WW II generation will soon be gone and, with it, all the people who remember “what it used to be like when we were free.” Unfortunately, all the relics of our wonderful civilizations will be torn down and the histories rewritten, so our progeny will need need to find underground sources of truth about the past and the wonders of the 2,500 years of Western Civilization.