 All or parts of Belvidere, Channahon, DeKalb, Dixon, Loves Park, Machesney Park, Ottawa, Morris, Pontiac, Rockford and Streator are included.The representatives for these districts were elected in the 2012 primary and general elections, and the boundaries became effective on January 5, 2013.Prominent past representatives from the 16th district have included Everett Dirksen, who went on to become the Republican leader in the United States Senate; John B. Anderson, who became the 3rd highest ranking Republican in the House and went on to run as a major independent candidate in the 1980 Presidential election; and Lynn Martin, who later served as United States Secretary of Labor.