 Chesterfield Township is located in the 3rd Congressional District and is part of New Jersey's 12th state legislative district.Prior to the 2011 reapportionment following the 2010 Census, Chesterfield Township had been in the 30th state legislative district.Prior to the 2010 Census, Chesterfield Township had been part of the , a change made by the New Jersey Redistricting Commission that took effect in January 2013, based on the results of the November 2012 general elections.