Senator Jim Bunning is no longer the most vulnerable incumbent in the U.S. Senate, according to Roll Call. He's been displaced by Sen. Chris Dodd (D-CT), who is up to his eyeballs in corruption charges relating to his sweetheart mortgage, his wife's connections to AIG and moving his family to Iowa when he ran for president, among other problems.
So Bunning, like Avis, is now No. 2. Guess that means he has the "big mo."