In this article, we examine both the content and effects of opinion shows during the 2008 presidential election. First, a content analysis shows that opinion shows devote most of their attention to attacking the opposition candidate, rather than praising the like-minded candidate. Second, analyses of panel data show that exposure to opinion shows made viewers less (more) favorable toward the opposition (like-minded) candidate. Finally, we use overtime analyses to show that coverage of the opposition candidate affects attitudes toward both candidates, whereas coverage of the like-minded candidate has negligible effects on attitudes toward either candidate.