The 2006 Cook County Board of Commissioners election was held on November 7, 2006. It was preceded by a primary election held on March 21, 2006. It coincided with other 2006 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.
Fifteen members were reelected. One incumbent Democrat withdrew from their election after being renominated, while one incumbent Republican lost his primary. No seat changed parties.
Democrats ran nominees in the races for all seventeen seats. Republicans ran nominees in ten races, while the Green Party ran a nominee in a single race. Five Democratic nominees faced no opponents in the general election, four of whom had also faced no opponents in their Democratic Party primary.
Incumbent second-term Commissioner Earlean Collins, a Democrat, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary. The Republican Party ultimately nominated Henrietta S. Butler.
Incumbent commissioner Robert Steele, a Democrat, was reelected. He had been appointed to succeed his mother Bobbie L. Steele, after they were appointed President of the Cook County Board of Commissioners.
No candidates, ballot-certified or formal write-in, ran in the Republican primary. The Republican Party ultimately nominated Scott W. Kummer.
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. The Republican Party ultimately nominated Maurice Perkins.
Then-incumbent Commissioner John Stroger originally sought reelection, winning the Democratic primary, but backed-out due to health issues (and also resigned his seat), and was replaced as Democratic nominee by William Beavers, who went to win the general election.
No candidates, ballot-certified or formal write-in, ran in the Republican primary. Ultimately, the Republican Party nominated Ann Rochelle Hunter.
Incumbent third-term Commissioner Deborah Sims, a Democrat, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
Incumbent first-term Commissioner Joan Patricia Murphy, a Democrat, was reelected.
Incumbent third-term Commissioner Joseph Mario Moreno, a Democrat, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
Incumbent third-term Commissioner Roberto Maldonado, a Democrat, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
Incumbent third-term Commissioner Peter N. Silvestri, a Republican, was reelected.
Incumbent second-term Commissioner Mike Quigley, a Democrat, was reelected, running unopposed in both the Democratic primary and general election.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
Incumbent Commissioner John P. Daley, a Democrat in office since 1992, was reelected.
Incumbent first-term Commissioner Forrest Claypool, a Democrat, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
Incumbent first-term Commissioner Larry Suffredin, a Democrat, was reelected, running unopposed in both the Democratic primary and general election.
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
Incumbent second-term Commissioner Gregg Goslin, a Republican, was reelected.
No candidates, ballot-certified or formal write-in, ran in the Democratic primary. The Democratic Party ultimately nominated Michelene "Mickie" Polk.
Incumbent eighth-term Commissioner Carl Hansen, a Republican, sought reelection, but was defeated in the Republican primary by Tim Schneider, who went on to win the general election.
Incumbent first-term Commissioner Tony Peraica, a Republican, was reelected.
Incumbent first-term Commissioner Elizabeth Ann Doody Gorman, a Republican, was reelected.