I have talked with you, followed the news, studied the op-eds and given a lot of thought to the liberal position because I want to understand and respond.
I agree that the Republican Party has troublesome issues of unity, that the front-runners would be poor choices for president and that the GOP is not dealing with the situation well.
That said, I see things differently than you do.
The liberal position is so transparent to you that you do not notice how one-sided it is, namely that the liberal position is The Way and The Light, and any deviation from it or opposition to it is suspect at best and heresy at worst.
From your position, the legitimate role the conservative faction should play is to temper liberalism and progressivism, to slow them down perhaps, but not to oppose their premise, because fundamentally liberalism is the way to go, and eventually conservatives will also see the light.
You don't see the liberal role in creating the stew we are in. Since you see the conservative struggle as being internal, you do not connect it with behavior on the liberal side.
What we are witnessing is the conservative reaction to a very liberal agenda that is bearing down heavily and relentlessly on conservatives and the values they hold dear. When people feel threatened and want to fight back, varied responses emerge — from resignation to accommodation to attempted compromise to storming the barricades. This struggle is going on in the conservative camp and accounts for the disunity. But the reaction to extremism will usually be extremism.
Conservatives feel their values and their way of life are under fire from a government that has stopped listening to them, that shuts them out of negotiations, that belittles their concerns, that is manipulating information to fortify a progressive agenda and that is constricting free speech to stifle opposition. I'm not writing exaggerations here. This is how about half of America feels.