sentences:  Four Congressional Districts cover the county, including portions of the 7th, 8th, 10th and 12th Districts.The county is part of the 20th, 21st and 22nd Districts in the New Jersey Legislature.On March 23, 2011, there were a total of 286,071 registered voters in Union County, of whom 119,520 (41.8%) were registered as Democrats, 43,643 (15.3%) were registered as Republicans and 122,799 (42.9%) were registered as Unaffiliated.