2008Final results
2008 election for President in Illinois
President · Illinois
Barack H. Obama (D) won with 61.9% of the vote, defeating John McCain (R) by 25.1 points.
Barack H. ObamaDemocrat · winner
61.9%3,419,348
John McCainRepublican
36.8%2,031,179
Ralph NaderIndependent
0.6%30,948
Bob BarrLibertarian
0.4%19,642
Cynthia McKinneyGreen
0.2%11,838
Charles ""chuck"" BaldwinConstitution
0.1%8,256
5,522,371 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 2008
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The candidates
Barack H. Obama (D)John McCain (R)
Also on the ballot: Ralph Nader (Independent), 0.6%; Bob Barr (Libertarian), 0.4%; Cynthia McKinney (Green), 0.2%; Charles ""chuck"" Baldwin (Constitution), 0.1%