Sarah Longwell: Susan Collins may sit 'on a throne of skulls of her enemies,' but she's facing an opponent unlike any before

<p>Dana Bash talks to focus group expert Sarah Longwell about the Maine Senate race and what Democratic voters are telling her about candidate Graham Platner. "Voters have kind of decided that your vices or some of the negative things in your background... almost confer a sense of authenticity," Longwell tells her. </p>