| Election Name: | 2010 Cook County Board of Commissioners election |
| Ongoing: | no |
| Type: | parliamentary |
| Previous Election: | 2006 Cook County Board of Commissioners election |
| Previous Year: | 2006 |
| Next Election: | 2014 Cook County Board of Commissioners election |
| Next Year: | 2014 |
| Election Date: | November 2, 2010 |
| Seats For Election: | All 17 seats on the Cook County Board of Commissioners |
| Majority Seats: | 9 |
| Party1: | Democratic Party (United States) |
| Seats Before1: | 12 |
| Seats1: | 13 |
| Seat Change1: | 1 |
| Popular Vote1: | 875,019 |
| Percentage1: | 67.30% |
| Swing1: | 9.15% |
| Party2: | Republican Party (United States) |
| Seats Before2: | 5 |
| Seats2: | 4 |
| Seat Change2: | 1 |
| Popular Vote2: | 356,573 |
| Percentage2: | 27.42% |
| Swing2: | 4.53% |
| Party4: | Green Party (United States) |
| Seats Before4: | 0 |
| Seats4: | 0 |
| Popular Vote4: | 68,644 |
| Percentage4: | 5.28% |
| Swing4: | 4.62% |
The 2010 Cook County Board of Commissioners election was held on November 2, 2010. It was preceded by a primary election held on February 5, 2010. It coincided with other 2010 Cook County, Illinois, elections (including the election for president of the Cook County Board of Commissioners). It saw all seventeen seats of the Cook County Board of Commissioners up for election to four-year terms.
Democrats increased their majority, flipping a control of a previously-Republican seat. The Democratic Party ran candidates in races for all seventeen seats, while the Republican Party contested eleven seats and the Green Party contested ten races.
See also: Cook County Board of Commissioners 1st district.
Incumbent third-term Commissioner Earlean Collins, a Democrat, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
See also: Cook County Board of Commissioners 2nd district.
Incumbent first-term commissioner Robert Steele, a Democrat, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
See also: Cook County Board of Commissioners 3rd district.
Incumbent Commissioner Jerry Butler, a Democrat who first assumed the office in 1985, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
No candidates, ballot-certified or formal write-in, ran in the Green primary. The Green Party ultimately nominated Marie J. "Jenny" Wohadlo.
See also: Cook County Board of Commissioners 4th district.
Incumbent first-term Commissioner William Beavers, a Democrat, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
See also: Cook County Board of Commissioners 5th district.
Incumbent fourth-term Commissioner Deborah Sims, a Democrat, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Green primary.
See also: Cook County Board of Commissioners 6th district.
Incumbent second-term Commissioner Joan Patricia Murphy, a Democrat, was reelected.
Sandra Czyznikiewicz defeated former 6th district Commissioner William Moran[1] and Michael Hawkins in the Republican primary.
No candidates, ballot-certified or formal write-in, ran in the Green primary.
See also: Cook County Board of Commissioners 7th district.
Incumbent fifth-term Commissioner Joseph Mario Moreno, a Democrat, lost reelection, being unseated in the Democratic primary by Jesús "Chuy" García, who went on to win the general election.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
See also: Cook County Board of Commissioners 8th district.
Incumbent Commissioner Edwin Reyes, a Democrat, who been appointed in 2009 after Roberto Maldonado resigned to serve a Chicago alderman, was elected to a full term.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
No candidates, ballot-certified or formal write-in, ran in the Green primary.
See also: Cook County Board of Commissioners 9th district.
Incumbent fourth-term Commissioner Peter N. Silvestri, a Republican, was reelected.
See also: Cook County Board of Commissioners 10th district.
Incumbent Commissioner Bridget Gainer, a Democrat first appointed in 2009 (to fill the vacancy left after Mike Quigley resigned to assume office as the United States congressman), was elected to a full term.
No candidates, ballot-certified or formal write-in, ran in the Republican primary. The Republican Party ultimately nominated Wes Fowler.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
See also: Cook County Board of Commissioners 11th district.
Incumbent Commissioner John P. Daley, a Democrat in office since 1992, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
See also: Cook County Board of Commissioners 12th district.
Incumbent second-term Commissioner Forrest Claypool, a Democrat, did not seek reelection. John Fritchey was elected to succeed him.
No candidates, ballot-certified or formal write-in, ran in the Republican primary. The Republican Party ultimately nominated William C. "Bill" Miceli.
No candidates, ballot-certified or formal write-in, ran in the Green primary.
See also: Cook County Board of Commissioners 13th district.
Incumbent second-term Commissioner Larry Suffredin, a Democrat, was reelected.
See also: Cook County Board of Commissioners 14th district.
Incumbent third-term Commissioner Gregg Goslin, a Republican, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Green primary.
See also: Cook County Board of Commissioners 15th district.
Incumbent first-term Commissioner Tim Schneider, a Republican, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Green primary. The Green Party ultimately nominated Laura Ehorn.
See also: Cook County Board of Commissioners 16th district.
Incumbent second-term Commissioner Tony Peraica, a Republican, lost reelection to Democrat Jeff Tobolski.
See also: Cook County Board of Commissioners 17th district.
Incumbent second-term Commissioner Elizabeth Ann Doody Gorman, a Republican, was reelected.
| Party | Seats held before | Seats contested | |
|---|---|---|---|
| Democratic | 12 | 13 | |
| Republican | 5 | 11 | |
| Green | 0 | 10 |
| Party | Popular vote | Seats won | |
|---|---|---|---|
| Democratic | 875,019 (67.30%) | 13 | |
| Republican | 356,573 (27.42%) | 4 | |
| Green | 68,644 (5.28%) | 0 | |
| Total | 1,300,236 |
| Party | Total incumbents | Incumbents that sought reelection/retired | Incumbents that won/lost re-nomination in primaries | Incumbents that won/lost general election | |
|---|---|---|---|---|---|
| Democratic | 12 | 11 sought reelection 1 retired | 10 won re-nomination 1 lost renomination | 10 won 0 lost | |
| Republican | 5 | 5 sought reelection 0 retired | 5 won re-nomination 0 lost renomination | 4 won 1 lost | |
| Green | No Green incumbents | ||||
| Party | Returning members | Newly elected members | |
|---|---|---|---|
| Democratic | 10 | 3 | |
| Republican | 4 | 0 |