As it stands now, this broken and dysfunctional party has no hope of winning the Presidency. Establishment types are far more interested in destroying conservatives than defeating democrats.
What conservatives need to do is lay down an ultimatum..
“Either you move to the political right and redirect your fire at the left side of the aisle, or plan to be in a permanent minority status, because we are forming a new party.”
What conservatives need to do is vote intelligently. Coalesce around a candidate earily. Replace dead wood with fire brands. Fight the best holding action you can when you don’t succeed.