An underrated possible future is that in a few months time Donald Trump loses the election and then spends the rest of his life in court and in jail for his many crimes. Like, this could definitely be how things go
At this point I feel like "Republicans collapse for a while, centrist Dems become the new major right-wing party, the more left side eventually splits off" is about the ideal outcome
I'd modify it to, "Republicans collapse, hard right republicans flee to fringe parties and even domestic terror elements, moderate repubs join Dems, progressive Dems break away to form new left" is how it'll play out.
That realignment period could be a time of strength for the secular right.