All of McConnell's political moves make perfect sense if you consider his goal - to maximum the number of GOP votes he can count on in the Senate. He'll always support incumbents, because that gives him leverage over them when they're in his caucus. And given a choice between two GOP non-incumbents, he'll always choose the one he thinks most likely to win the general election regardless of which is the more conservative.
BS. McConnell is a traitorous RINO and has TDS.