Reagan secured the nomination IN SPITE OF the GOP establishment. And in case you forgot, Romney ran a "conservative" campaign without any specifics that was contrary to his history of actions.
Also lest you forget, Romney didn;t even garner as many votes from conservatives as McCain.precisely because he was not as conservative as he tried to present himself.
As for the "Purists" I will remind you that our "strong bench" for the next pres. election consists of the very same "Purists" like Rubio and Cruz who the GOP opposed. McCain and his band of 8 or whatever the number it is today are the very people that are first to the plate to throw darts at the very purist that we are now told are our strong bench. Your contempt is misplaced.