As of March 2011, there were a total of 9,738 registered voters in North Plainfield, of which 3,403 (34.9% vs. 26.0% countywide) were registered as Democrats, 1,582 (16.2% vs. 25.7%) were registered as Republicans and 4,746 (48.7% vs. 48.2%) were registered as Unaffiliated. There were 7 voters registered as Libertarians or Greens.Voter Registration Summary - Somerset, New Jersey Department of State Division of Elections, March 23, 2011. Accessed February 13, 2013. Among the borough's 2010 Census population, 44.4% (vs. 60.4% in Somerset County) were registered to vote, including 58.8% of those ages 18 and over (vs. 80.4% countywide).GCT-P7: Selected Age Groups: 2010 - State -- County Subdivision; 2010 Census Summary File 1 for New Jersey , United States Census Bureau. Accessed February 13, 2013.
