2012Final results
2012 election for Illinois's 11th District
U.S. House · Illinois
Bill Foster (D) won with 58.6% of the vote, defeating Judy Biggert (R) by 17.1 points.
Bill FosterDemocrat · winner
58.6%148,928
Judy BiggertRepublican
41.4%105,348
254,295 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 2012
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Bill FosterJudy Biggert
$3.5M
Raised by the campaign
$2.9M
$3.6M
Spent by the campaign
$3.2M
$9K
Cash on hand
$67.4K
Campaign money: FEC, through Dec 31, 2012.
Source: FEC campaign filingsUpdated Dec 31, 2012