Illinois Senate race

Interest groups and political parties reported spending $18,059,569 on independent campaigning in the Illinois Senate race this year, with $11,124,632 benefiting Republicans and $6,934,937 benefiting Democrats. Back to race list.

Group Week before election Two weeks before election Three weeks before election Total
Democratic Senatorial Campaign Committee
Opposing Mark Kirk (R)
$2,296,793 $992,823 $871,035 $5,932,520
American Crossroads
Opposing Alexander Giannoulias (D)
$1,033,183 $1,202,218 $1,171,602 $5,606,835
National Republican Senatorial Committee
Opposing Alexander Giannoulias (D)
$1,486,730 $825,330 $0 $2,312,060
U.S. Chamber of Commerce
Opposing Alexander Giannoulias (D)
$0 $1,182,856 $0 $1,682,856
New Prosperity Foundation
Opposing Alexander Giannoulias (D)
Supporting Mark Kirk (R)
$473,588 $185,007 $0 $1,006,309
Working For Us
Opposing Mark Kirk (R)
$0 $192,128 $500,000 $692,128
League of Conservation Voters
Opposing Mark Kirk (R)
Supporting Alexander Giannoulias (D)
$200,000 $0 $0 $200,000
American Society of Anesthesiologists
Supporting Mark Kirk (R)
$76,150 $76,150 $0 $152,300
American Hospital Association
Supporting Mark Kirk (R)
$0 $123,500 $0 $123,500
Illinois Chamber of Commerce
Supporting Mark Kirk (R)
$0 $0 $107,500 $107,500
American College Of Surgeons Professional Association
Supporting Mark Kirk (R)
$0 $0 $0 $90,030
MoveOn.org
Opposing Mark Kirk (R)
Supporting Alexander Giannoulias (D)
$0 $2,181 $62,232 $64,413
The Advocacy Fund
Opposing Mark Kirk (R)
Supporting Alexander Giannoulias (D)
$2,191 $0 $0 $36,166
Trust In Small Business PAC
Supporting Mark Kirk (R)
$0 $23,236 $0 $23,236
Revere America
Supporting Mark Kirk (R)
$10,012 $0 $0 $10,012
Right to Life
Opposing Alexander Giannoulias (D)
$9,994 $0 $0 $9,994
America's Voice
Supporting Alexander Giannoulias (D)
$9,434 $0 $0 $9,434
NARAL Pro-Choice America
Opposing Mark Kirk (R)
Supporting Alexander Giannoulias (D)
$0 $0 $0 $276
SOURCES: Federal Election Commission filings; Washington Post research

NOTE: Totals represent spending in calendar year 2010 and will change as new filings are made or information is amended. Data includes "electioneering communication" and electronically-filed "independent expenditure" spending reported to the Federal Election Commission. Spending on "issue ads" targeting candidates will not be included if it is more than 30 days before a primary or more than 60 days before the general election. "Weeks on list" shows the total number of weeks that a group or race has been in the top ten throughout the year.

By T.W. Farnam and Nathaniel Vaughn Kelso -- The Washington Post