From ABC News:
Nearly 100 percent of the McCain campaign's advertisements had a negative message, while roughly 34 percent of Obama’s commercials were negative. The study shows that negative advertising is up compared to 2004. President Bush's ads were negative 64 percent of the time, Massachusetts Sen. John Kerry had 34 percent negative ads.
One hundred percent! That's, like, the best score you can possibly get on a math test. If we were in school for AVOIDING-RELEVANT-ISSUES/ADVANCED-HATE-MONGERING, McCain/Palin would be the valedictorians.