I would think that would be the Missouri Republican party's responsibility.
Nope, that’s the Governor’s responsibility. The Governor is the leader of the party. I’d have a lot more respect for Blunt if he stood up to Nixon and went out fighting. Cutting and running is a poor show. Of course, judging from his father’s performance in DC as the worst party Whip in years (and virtually non-existent in the leadership department), I can see where he gets it from. :-(