Morning Joe 09/13/13

Gov. Christie unveils first 'positive' ad of 2013

Politico Playbook: Gov. Chris Christie, R-N.J., has begun running his first political ad of the 2013 season, and Politico's Mike Allen joins Morning Joe to discuss the ad's tone. Chris currently stands at 50 percent in the upcoming NJ gubernatorial ... more Duration: {{video.duration.momentjs}}