What do you mean, IF the GOP caves.
It is a given. Go along to get along, otherwise the people who write blurbs for newspapers and TV opinion programs will point and laugh at you.
Not that these same people aren’t already pointing and laughing at you. Up to now, it has just been behind your back.
Not third party time. Secede and form a new nation time.
The blueprint is already there. Just separate the country by congressional district/counties between the “red” areas and the “blue” areas, and carve the Reunited States out of the “red” area. We get to keep the existing Declaration of Independence and the US Constitution. The little “blue” republics (and there will be a lot of them) get to keep whatevr set of cockamamie rules they want, except the right to emigrate to the “red” region without a very extensive background check.
There is a problem with that though.
If we make no changes, the same thing will occur in the Reunited Sates.
Allowing the enemies of freedom the freedom to spread their poison and further teach that poison to our children in a systematic institutionalized manner is the doom of any free society.
If a society is to remain free, it must snuff out the termites as soon as they are discovered, no questions asked. It must make only free people with each generation that follows. What is being made now are slaves, and they are slaves who wish to be slaves because that is all they have been taught.
I like the way you think.