Let’s not be defeatist. It matters a lot as to who controls the Senate. Any GOP candidate is better than the most conservative Dem. Look at the ratings across the organizations. It matters a lot and we need the GOP.
I submit John Boehner's actions (as late as yesterday)as evidence this is false. When it counts, RINOs caucus with Democrats and leave conservatives hanging. McConnell will do likewise if he is ML. I have reached the point that better the enemy I know than the friend I cannot trust.
So conservatives should stick with the GOPe no matter how the GOPe kicks them and tries to destroy them, because the other choices might be worse? That is why many wives stay with battering husbands and it’s a bad decision. Sometime you have to take a few short term problems to fix long term ones. If conservatives ditch the GOPe, it may seem to help democrats in the near term, but it would force a political realignment that might be beneficial in the long term. In any event, it is the sane thing to do.