The conventional wisdom is Tom Lingenfelter will pull votes from Republican Mike Fitzpatrick. Two former interns for Congressman Patrick Murphy, now working for the state Democratic Party, have turned in nominating petitions to get a third-party candidate on the ballot. The interns - Brian Caplan of Northampton and Jessica Milinichik of Bristol Township - submitted 148 signatures on the notarized papers for Tom Lingenfelter, a Doylestown historian. The addition of Lingenfelter to the 8th District ballot is significant as his presence in a rematch between Murphy, a Democrat, and former Congressman Mike Fitzpatrick, a Republican, could tilt the outcome. Back...