Politics thumb|right|Presbyterian Church of Westfield as seen from Mindowaskin Park near the downtown area As of March 2011, there were a total of 20,684 registered voters in Westfield, of which 6,485 (31.4% vs. 41.8% countywide) were registered as Democrats, 5,244 (25.4% vs. 15.3%) were registered as Republicans and 8,942 (43.2% vs. 42.9%) were registered as Unaffiliated. There were 13 voters registered as Libertarians or Greens.Voter Registration Summary – Union, New Jersey Department of State Division of Elections, March 23, 2011. Accessed May 24, 2013. Among the town's 2010 Census population, 68.2% (vs. 53.3% in Union County) were registered to vote, including 97.5% of those ages 18 and over (vs. 70.6% countywide).GCT-P7: Selected Age Groups: 2010 – State -- County Subdivision; 2010 Census Summary File 1 for New Jersey , United States Census Bureau. Accessed May 24, 2013.
Politics thumb|right|Presbyterian Church of Westfield as seen from Mindowaskin Park near the downtown area As of March 2011, there were a total of 20,684 registered voters in Westfield, of which 6,485 (31.4% vs. 41.8% countywide) were registered as Democrats, 5,244 (25.4% vs. 15.3%) were registered as Republicans and 8,942 (43.2% vs. 42.9%) were registered as Unaffiliated. There were 13 voters registered as Libertarians or Greens.Voter Registration Summary – Union, New Jersey Department of State Division of Elections, March 23, 2011. Accessed May 24, 2013. Among the town's 2010 Census population, 68.2% (vs. 53.3% in Union County) were registered to vote, including 97.5% of those ages 18 and over (vs. 70.6% countywide).GCT-P7: Selected Age Groups: 2010 – State -- County Subdivision; 2010 Census Summary File 1 for New Jersey , United States Census Bureau. Accessed May 24, 2013.