Key:
GP – General PrimaryGE – General Election
1st – GP: Antonio Munoz (D) vs. Adolfo Mondragon (D)
4th – Uncontested
7th – GP: Heather Steans (D) vs. Jim Madigan (D)
7th – GE: Heather Steans (D) vs. Adam Robinson (R)
10th – GP: John Mulroe (D) vs. John Nocita (D) vs. Mary Anselmo (D) vs. Wanda Majcher (D) vs. Thomas Ryan (D); objection against Nocita filed 12/15/2009; objection against Anselmo filed 12/10/2009; objection against Ryan filed 12/15/2009; objection against Mulroe filed 11/9/2009
10th – GE: John Mulroe (D) vs. Brian Doherty (R)
13th – GP: Kwame Raoul (D); objection against Al Hofeld, Jr. (D) filed 12/7/2009, who withdrew on same day
16th – Uncontested
19th – GE: Mary Crotty (D); objection against Adam Wojcik (R) filed 4/26/2010
22nd – GP: Steven Rauschenberger (R) vs. Jeffrey Meyer (R); objection against Rauschenberger filed 11/9/2009
22nd – GE: Michael Noland (D) vs. Steven Rauschenberger (R)
25th – GP: Chris Lauzen (R) vs. Sean Michels (R)
25th – GE: Chris Lauzen (R) vs. Leslie Juby (D)
28th – GE: John Millner (R) vs. Corinne Pierog (D)
31st – GE: Michael Bond (D) vs. Suzi Schmidt (R)
34th – GE: Dave Syverson (R) vs. Marla Wilson (D)
37th – Uncontested
40th – GP: Adam Baumgartner (R) vs. Judy Ogalla (R)
40th – GE: Toi Hutchinson (D) vs. Adam Baumgartner (R)
43rd – GE: A.J. Wilhelmi (D); objection against Christopher Pedersen (IC) filed 7/9/2010; objection against Cedra Crenshaw (R) filed 4/19/2010
46th – GE: David Koehler (D); objection against Bradley Carter (C) filed 8/17/2010
49th – GE: Deanna DeMuzio (D) vs. Sam McCann (R)
51st – GE: Kyle McCarter (R) vs. Tim Dudley (D)
52nd – GE: Michael Frerichs (D) vs. Al Reynolds (R)
55th – GE: Dale Righter (R) vs. Josh Weger (D)
58th – GE: David Luechtefeld (R) vs. Jeremy Randal Walker (D)