Pennsylvania's 5th district is the second-largest Congressional district East of the Mississippi. And t his primary season, there's a huge field of candidates vying to represent it: 12 in all. WPSU is committed to letting you hear where each one of them stands on the issues. Our series of "Conversations with the Candidates" concludes this morning as WPSU's Patty Sattalia talks with Republican Derek Walker. (This interview was recorded 3 weeks ago).