The race between Dr. Oz, who was backed by Trump, and businessman David McCormick is still too close to call in Pennsylvania's GOP Senate primary. RELATED: Lt. Gov. John Fetterman suffers stroke days before PA Senate election https://bit.ly/3Py6B2S While Tuesday's big primary day ended in the defeat of controversial Rep. Madison Cawthorn in North Carolina and win of controversial GOP candidate Doug Mastriano in Pennsylvania's GOP gubernatorial race, the Keystone State may be headed toward a recount for the GOP Senate primary featuring Dr. Mehmet Oz. Oz, backed by former President Donald Trump, and businessman David McCormick, were separated by less than 1 percentage point, with conservative commentator Kathy Barnette in third, for the Pennsylvania GOP Senate nomination. The winner faces Lt. Gov. John Fetterman, who won the Democratic nomination for the Senate seat in Pennsylvania, despite the fact that he suffered a stroke just a few days ago. » Subscribe to USA TODAY: http://bit.ly/1xa3XAh » Watch more on this and other topics from USA TODAY: https://bit.ly/3q3ON4B » USA TODAY delivers current local and national news, sports, entertainment, finance, technology, and more through award-winning journalism, photos, videos and VR. #Primaries #Cawthorn #DrOz