On Tuesday May 16, voters across Pennsylvania will go to the polls for a primary election. One race to watch is the contest for the U.S. Senate seat currently held by Republican Rick Santorum. On we presented interviews with 2 of the Democratic challengers (candidate and State Treasurer Robert Casey Jr. did not respond to a request for an interview.) On we aired an interview with the incumbent, Republican Senator Rick Santorum. This is that conversation with WPSU's Cynthia Berger.