Illinois's 18th congressional district

The district covered parts of McLean, Peoria, Sangamon, Stark and Tazewell counties, and all of Adams, Brown, Cass, Hancock, Logan, Marshall, Mason, McDonough, Menard, Morgan, Pike, Schuyler, Scott and Woodford counties, as of the 2011 redistricting which followed the 2010 census. All or parts of Bloomington, Chatham, Jacksonville, Lincoln, Macomb, Morton, Normal, Peoria, Quincy and Springfield were included. The representatives for these districts were elected in the 2012 primary and general elections, and the boundaries became effective on January 5, 2013. Future Due to Illinois losing population in the 2020 United States census, the district was eliminated in January 2023. == Election results from statewide races ==

== List of members representing the district ==

1994 1996 1998 2000 2002 2004 2006 2008 Ray LaHood decided not to seek re-election in 2008 and was chosen by Barack Obama to serve as U.S. Secretary of Transportation. Illinois State Representative Aaron Schock of Peoria won the seat for the Republicans in the November 4, 2008 election. His main opponent was Democrat Colleen Callahan, of Kickapoo, a radio and television broadcaster. Green Party candidate and educator Sheldon Schafer, of Peoria, was in a distant third place on the ballot. 2010 2012 2014 2015 special election 2016 2018 2020 ==Historical district boundaries==