Newt Gingrich and Rick Santorum deplore them, even as they rely on them. Mitt Romney wants them to “disappear,” despite one that helped him in Iowa. President Obama launched his first ad of the 2012 campaign – in response to a super PAC ad. Jon Huntsman Jr. gave up his candidacy, saying “This race has degenerated into an onslaught of negative and personal attacks not worthy of our people.”