NEW YORK—Repeatedly emphasizing how her proposed policies would benefit middle-aged fathers of three who work in the public sector, Democratic presidential candidate Hillary Clinton appeared to be tailoring each of her answers during Thursday night’s primary debate to a single unclaimed New York superdelegate, sources reported. “As your next president, I promise to make America work for all of us—not just the billionaires, but also middle-class families working to pay off a 30-year mortgage on a postwar duplex in Queens,” said Clinton, adding that, now more than ever, the federal government needed to reduce the burden of student debt on those who had just taken their firstborn daughter on a tour of several colleges upstate.