Advertising in the social ecosystem offers presidential candidates bigger results than tweeting and Facebooking alone. Mainstream media is already asking: how big a role will social ads play in the 2012 presidential election? To create this infographic about the 2012 landscape for political advertising, 140 Proof’s Data Team reviewed data from the 2004 and 2008 elections as well as recent reporting from AdAge, Adweek, and eMarketer.