PolitiFinder

2010 Illinois U.S. Senate Special

Illinois · 5 candidates · See every 2010 U.S. Senate race

Who won the 2010 Illinois U.S. Senate Special?

Mark Steven Kirk won the 2010 Illinois U.S. Senate Special. Mark Steven Kirk received 1,778,698 popular votes (48.01%). The main challenger was Alexander Alexi Giannoulias (46.42%).

See the full head-to-head between Kirk and Giannoulias

Kirk +1.6 pts · won by 59,220 votes
Mark Steven KirkRepublicanWINNER48.01%
1,778,698 votes
Alexander Alexi GiannouliasDemocratic46.42%
1,719,478 votes
Lealan M. JonesGreen3.18%
117,914 votes
Mike LabnoLibertarian2.36%
87,247 votes
Corey DabneyIndependent0%
33 votes
A special election fills a Senate seat that came open mid-term. Popular-vote totals for U.S. Senate elections come from the MIT Election Data and Science Lab (1976–2024).

Data last verified July 28, 2026.