Breaking Down Rangel's (Slim) Lead

Congressman Charlie Rangel has declared victory in New York's 13th congressional district Democratic primary. But he only leads Adriano Espaillat by about two thousand votes, and a significant number of absentee ballots have yet to be counted. WNYC political reporter Brigid Bergin and Data News team's John Keefe break down the politics and data of the super-close race.