Obama campaign goes on the attack, Romney counters (KPCC, Southern California Public Radio, May 16th, 2012)
Super PAC Attack Ads Paved Way For Explosion in Independent Group Spending In Presidential Primaries (The Huffington Post, April 30th, 2012)
Fact checking group accuses Romney super PAC of spending $20 million on deceptive ads (Sunlight Foundation, April 30th, 2012)
Deception! Pro-Romney super PAC spent $20 million on deceptive ads in primary (San Francisco Chronicle, April 30th, 2012)