 The district at very times included Skokie, Lincolnwood, Morton Grove, and portions of neighboring Chicago.Lang serves as committeeman for Niles Township Democratic Organization, Executive Vice Chairman for the Cook County Democratic Party, and as Secretary of the Democratic Legislative Campaign Committee.In 1993, Lang advanced to House Democratic Floor Leader, a post he held until 1997 when he assumed the position of Assistant Majority Leader, and in 2009 Lang became Deputy Majority Leader.