Republicans in general could be considered "libetratian lite". Of course there are those RINOs who are authoritarian, but they don't count.Well said. Iv said the same thing for a while now, democrats tell you what they want and what they are going to do. They are good at rallying and sticking together. On the other hand as you said republicans can’t or won’t agree on anything. They do not stick together, most the rinos do not have a backbone when under pressure it seems they cave. When you mentioned the non dem voters will cut their nose to spite their face, your correct.
My conclusion on why the parties are this way—-
Democrats like or want some sort of social/ communism so naturally they will stick together. It’s natural to them
Collective thought
Republicans love individualism/ capitalism with American values of every man for himself but at the time will help those in need.
Individual thought