The Cook County, Illinois general election was held on November 2, 2010. Primaries were held February 2, 2010. Elections were held for Assessor, Clerk, Sheriff, Treasurer, President of the Cook County Board of Commissioners, all 17 seats of the Cook County Board of Commissioners, Cook County Board of Review district 1, three seats on the Water Reclamation District Board, and judgeships on the Circuit Court of Cook County.