 Historian, professor and communications director for Mike Gravel's 2008 presidential campaign David Eisenbach formed an exploratory committee for a potential primary challenge of Maloney.The 13th district is located entirely in New York City and includes Upper Manhattan and a small portion of the western Bronx.The incumbent was Democrat Charles Rangel, who has represented the district since 2013, and previously represented the 15th district from 1993 to 2013, the 16th district from 1983 to 1993, the 19th district from 1973 to 1983 and the 18th district from 1971 to 1973.