Celebrity heart surgeon Dr. Mehmet Oz, who hosts the ‘The Dr. Oz Show,’ said he would mount a Republican bid for a U.S. Senate seat for Pennsylvania, shaking up what could be one of the most competitive races in next year's congressional elections #DrOz #GOP #Pennsylvania #Senate #News #Reuters Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en