Illinois' 12th congressional district
The current representative of the 12th congressional district is Jerry Costello (D).
|U.S. House, Illinois District 12 General Election, 2012|
|Source: Illinois Board of Elections "2012 General Election Official Vote Totals"|
- See also: Redistricting in Illinois
In 2011, the Illinois State Legislature re-drew the Congressional districts based on updated population information from the 2010 census.