[2] Turnout by county[2] Incumbent Democrat Roland Burris, appointed in 2009 by then-Governor Rod Blagojevich to fill the U.S. Senate seat that Barack Obama had vacated after being elected President of the United States, did not seek reelection.

Green Party nominee Adrian Frost withdrew before the election.

Alexi Giannoulias Democratic Dan Rutherford Republican Incumbent Treasurer Alexi Giannoulias, a Democrat, did not seek reelection to a second term, instead opting to run for United States Senate.

As of 2022[update], this is the last time a Republican was elected Illinois state treasurer.

One measure, the Governor recall amendment, was certified for the 2010 statewide election.