PolitiFact: Correct That Obama In 2008 Ran “More Negative Ads In American History” Than Any Other Presidential Candidate. Rubio said, ‘No candidate has run more negative ads in American history than Barack Obama did in 2008, especially in the general.’ In sheer numbers, that statement is correct: Obama bought many more ads than McCain did, both positive and negative. Nevertheless, two studies suggest that, overall, Obama’s ads were not significantly more negative than his rival. He ran the most negative ads because he ran the most ads. We rate Rubio’s statement Mostly True.” (“Marco Rubio Said ‘No Candidate Has Run More Negative Ads In American History Than Barack Obama In 2008,” Tampa Bay Times’, “Politifact” 2/6/12)