Personality contrasts are starting to emerge in the race for the open U.S. Senate seat in Pennsylvania, being vacated by Republican Sen. Pat Toomey. Republican candidates met at Villanova University Monday in a debate—televised statewide—that delivered sparks, barbs, and even some substantive answers. The debate was sponsored by BroadandLiberty.com; PA Chamber of Business and Industry; LV Strong; and Keystone Free Enterprise Fund. Although candidates Dave McCormick, Mehmet Oz, and Carla Sands have been spending big bucks on advertising to get statewide exposure, all three skipped the debate. It is the second debate the three have missed. Participating candidates were Jeff Bartos, Kathy Barnette, George Bochetto, and Everett Stern. Moderators who asked questions were former Republican state Rep. Becky Corbin; PA Chamber Director of Political Engagement Allison Coccia, and BroadandLiberty.com President and CEO Terry Tracy. There were also a few prepared questions from students. The Debate Before answering his first question, …