Is Donald Trump truly one of a kind—a sui generis sensation in U.S. politics? As Americans try to make sense of the businessman-turned-Republican presidential frontrunner and how he’s come to dominate the polls and the airwaves in the 2016 cycle, Politico Magazine decided to consult the archives: Is there a historical figure the Donald resembles—a model who can help explain his rise? We asked some of the smartest historians we know to name the closest antecedent to Trump from the annals of American history