Front-Runners in G.O.P. Pennsylvania Senate Race Are Put on Spot at Debate. Oz, Mehmet C, McCormick, David H (1965- ), Sands, Carla (1960- ), Republican Party, Debates (Political), Elections, Senate, United States Politics and Government, Primaries and Caucuses, Barnette, Kathy (1971- ), Bartos, Jeff, Pennsylvania