Obama is a little more straight forward on the stump. But in the ad he seems only to talk about the need to talk about Social Security reform. Hillary Clinton, meanwhile, is giving the appearance of kicking ass and taking names in her own spot. But you'll note the name being taken isn't Barack Obama.
Rudy Giuliani also takes a swipe at Clinton in a radio ad called "Chances." Though he doesn't name the Democratic candidate, he says: "I had prostate cancer, five, six years ago. My chance of surviving prostate cancer, and thank God I was cured of it, in the United States, 82%. My chances of surviving prostate cancer in England, only 44% under socialized medicine."
Though "socialized medicine" could technically refer to plans put forward by any of the Democratic candidates, the phrase is meant to be code for Clinton's sweeping proposals.