Pivotal Primaries for Senate and Governor in Pennsylvania

Years-old tweets, outside money groups and an endorsement from Donald Trump all are factors in a three-way race for the Republican nomination for U.S. Senate in Pennsylvania. So who will come out on top after Tuesday's primary: Kathy Barnette, David McCormick, or Dr. Oz? Plus, Republicans raise concerns about the electability of the frontrunner for the GOP nomination for Governor.     Learn more about your ad choices. Visit megaphone.fm/adchoices