This is the MSM strategy. First build McCain up to the stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid, stupid members of the Republican Party, securing his nomination.
Then tear him down, and make him unelectable in the general election, by pounding in this charge of erratic and out of control.
(Did I mention the Republicans are stupid?)
Based on this, my vote for stupidest Republican is Cochran.