This Saturday, Democrats in America’s largest city will be asked to begin picking their nominee for mayor, a person whose influence is certain to extend beyond the five boroughs. But the voting system is different than anything New York City has used before, and there still isn’t a frontrunner. Dan digs in with Dana Rubinstein, a metro desk reporter with the New York Times, to learn more about the candidates, why crime and policing have become the top issue and what to watch heading into Saturday.  Learn more about your ad choices. Visit megaphone.fm/adchoices