"I think my take on it was Colin had already left the party. I didn't know he was still a Republican."
"So you think that he's not a Republican?"
"I just noted he endorsed the Democratic candidate for president this time, Barack Obama," Cheney said. "I assumed that that is some indication of his loyalty and his interest."
In fact, old Dick even went so far as to explicitly proclaim that "maintaining our loyalty and commitment to those principles is vital to our success" as Republicans.
Seems to me that Dick's view is that being Republican means marching in lock-step loyal formation. Obedience to orders would seem to be a core Republican virtue, at least according to old Dick.