Former President Donald Trump would have a crisis on his hands if he wins in November, warned David M. Marchick, a scholar who specializes on the history of presidential transitions. His dire warning was published by Bloomberg Monday. Presidential transitions, he wrote, are always a challenge even for winning candidates with managerial skill. “In fewer than 75 days, the president-elect needs to appoint hundreds of White House staffers, select a cabinet and fill more than 4,000 politically appointed positions,” he wrote. “The new administration needs to quickly prepare a budget and engage allie…