During the 2016 presidential race, “Hillbilly Elegy” author J.D. Vance was a scathing critic of Donald Trump and argued that he would be terrible for the Republican Party if he won the election. But Vance, now a U.S. senator via Ohio, has since taken an ultra-MAGA turn and become a strident Trump supporter. And he is reportedly on Trump’s short list for a running mate. In a biting op-ed published by The Guardian on July 9, Jan-Werner Müller attacks Vance as a “faux populist” who favors style over substance. READ MORE: ‘Wrong direction’: Trump’s revenge obsession alarms GOP senators “The junior…