[youtube=http://www.youtube.com/watch?v=Ak_KhhHqTP0&feature=player_embedded] The best negative ads need to connect viscerally with viewers. They need to engage with them, this ad just doesn't feel credible. It seems political and somehow unfair, and I ultimately think it fails. It's ads like these that give political ads a bad name. Potentially, an ad like this one could backfire on Poizner if voters feel like he's just slinging mud.