Holly Otterbein reports on two Philadelphia mayoral hopefuls, Ken Trujillo and Lynne Abraham, officially throwing their hats into the ring. Dave Davies reports on efforts to hold outside groups to campaign finance limits. Amy Quinn reflects on a big night for amateur sleuths on Twitter in Philadelphia. Jessica McDonald reports on Penn Professor Danielle Bassett, a recipient of one of this year’s MacArthur “genius” grants. Annenberg Public Policy Center Director Kathleen Hall Jamieson joins us to discuss initiatives around promoting knowledge of American democracy. And commentator Beth Olanoff reminds us of a local connection to the woman suffrage movement.