When New York City Mayor Bill de Blasio announced he would run for president, the mockery was swift. City tabloids were typically disdainful (New York Post: “Everyone Hates Bill!”). New York’s attorney general quipped, “Why?” Even de Blasio’s former staffers have declined to voice support for their old boss’s presidential bid. Here, now, an explanation for why New Yorkers are so sure their mayor would be a bad fit for the White House.  Guest: Henry Grabar, Slate staff writer.  Learn more about your ad choices. Visit megaphone.fm/adchoices