Insiders in Donald Trump’s campaign are increasingly worried that an ally’s extremist past could hand a key swing state to Joe Biden in November. TheDaily Beast reported concerns that the former president’s aligning himself with North Carolina’s far-right candidate for governor, Lt. Gov. Mark Robinson, is damaging his chances of taking the state. “He’s an opposition researcher’s dream,” Democratic strategist Morgan Jackson told the Beast. Want more breaking political news? Click for the latest headlines at Raw Story. “Mark Robinson is the most extreme candidate for public office, period, in No…