Donald Trump has a message he’d like to give Fox News political pollster Frank Luntz: You’re fired. Fresh off his confrontation with Fox News superstar Megyn Kelly, Donald Trump is now lashing out at Luntz and calling on Fox News to fire him from overseeing its post-debate focus groups. The participants in Luntz’s focus group bashed the real-estate mogul’s performance during the Fox News Republican presidential debate on Aug. 6, calling Trump “mean” and “bombastic.” Trump was quick to criticize the focus group, calling Luntz a “clown” and a “low class slob” on Twitter. It has now come to light...