Study: McCain Ads Overwhelmingly Negative

A study conducted by the University of Wisconsin Advertising Project, almost every TV ad run by John McCain's campaign over the past week has been negative, compared to about 34 percent of those run by Barack Obama's campaign. But for the entirety of the campaign, both have run mostly negative ad. In the campaign up to now, 73 percent of McCain's ads have been negative compared to 61 percent of Obama's, the study found.

And, Obama has been outspending McCain, the study shows. Between September 28th and October 4th Obama spent over $17 million on TV ads compared to about $11 million spent by McCain and the RNC combined. An earlier study showed that the campaigns spent about equally in early September.