Roberts is a dependable conservative vote.
I am also not a denier of facts. Establishment Republicans have always been here and will always be here, it's just a fact. McConnell, who gives me the creeps, will nonetheless win his race. McConnell is not going to lose in a conservative coal state in a year that one-third of all voters will be voting against Obama. Especially after today's revelations catching Grimes' staff on tape talking about Grimes having to say she supports coal, but when she gets into office she will work against coal. McConnell will easily win Kentucky. Cochran will easily win Mississippi. Is it fair? No, I don't think so, but we all know life isn't fair.
There are Cruz' and the Mike Lee's, but unfortunately most politicians are insecure and will do as told by the leadership. So when Cantor lost his primary and resigned from the House, who did the rank and file vote for his replacement: a tried and true moderate Republican establishment from California - conservatives voted for him, too.
So you see, establishment republicans are not in danger at all. I'm just pointing out facts.