Oprah Winfrey on Thursday night turned on the TV doctor she propelled to stardom - saying she would vote for Dr Mehmet Oz's rival John Fetterman in their battle to be elected to the Senate. Oz, a Turkish-American surgeon, and Fetterman, the current lieutenant governor of Pennsylvania, are neck-and-neck ahead of next week's election. Winfrey turned Oz into a household name when she appeared on his show in 2003, and invited him onto hers in 2004. He would go on to make more than 60 appearances on her hugely influential daytime show. Yet on Thursday, the 68-year-old media mogul said...