The 13th Congressional District of Illinois covers the southwest suburbs of Chicago, including portions of the Cook, DuPage, and Will counties. It has been represented by Republican Judy Biggert since 1999.
In the 2004 U.S. General Election, this district voted for George W. Bush with 55% to 45% for John Kerry.
, most notable for being the 13th and 21st U.S. Secretary of Defense
, represented the district from January 3
– March 20
, although the former 13th district was a north suburban district and encompassed much of the current 8th