ABC News: McCain, Obama Camps Go Negative as Presidential Campaign Nears Homestretch

After Obama was pummeled over the weekend for his alleged  ties to a former radical Weatherman Bill Ayers, a top Obama aide accused McCain Monday of waging a "dishonest, despicable smear campaign."

At the same time, the Obama camp got down and dirty, launching a Web documentary reminding voters that in the 1980s McCain was one of the "Keating 5," a group of congressmen who were investigated for trying to fend off charges against a campaign contributor who was a major player in the savings and loan scandal.