McCaskill three-of-a-kind ad: Brunner doesn't even bother to vote

Sen. Claire McCaskill's campaign seems to be having a lot of fun watching the three GOP candidates muddy the waters with slams against each other, while McCaskill simply stand to the side and take shots at all of them. This is one of her three-of-a-kind ads, designed to show voters that the Republican candidates really are Moe, Sarah, and Curly.