That is not actually the way I see it. The good candidates from loftier days are still to be found. I think republican voters don't let them get past the playoffs and instead pick flawed candidates if they verbally list all the crazy things republicans want to go after that a national voter pool would never vote for them over. In this case I do think it is republican voters doing this to themselves. Nothing showed that clearer than in the last playoff as all the goofy candidates gave simplistic nonsense about what they'd do with China. Only Huntsman sounded like a man with a brain and gave the important correct answer and he could not survive and get past the republican voters. He is a brilliant man. He would never make it in this environment of stupid-think.
I think old school republicans with brains would run and do run now and then but they have no chance and they are the only ones who could win if they can get past their own brain drain election.
Has nothing to do with liberals.