McConnell, in wake of manager's resignation, starts ad attacking Grimes for bus deal with father

If the gloves weren't already off in Kentucky's race for the U.S. Senate, they are now.

Hit by the resignation of its campaign manager in a bribery scandal from his last campaign, the campaign of Sen. Mitch McConnell launched a television commercial about "potentially illegal campaign contributions from her father," in the form of less-than-market rate rental of her campaign bus. This is McConnell's toughest ad yet.