Missouri U.S. Senator Claire McCaskill says she thinks she would “win in a walk” if people knew who paid for political ads against her. The Democrat is seeking re-election next month.
McCaskill, who faces Republican Attorney General Josh Hawley, is considered one of the most vulnerable U.S. Senate incumbents. She has taken on the top three drug makers for shipping 1.6 billion in addictive prescription drugs to Missouri in five years.
