Voter turnout in Cook County during the primaries was 35.02%, with 921,086 ballots cast. Among these, 764,160 Democratic, 145,447 Republican, 74 Libertarian, 76 Green, and 11,326 nonpartisan primary ballots were cast. The city of Chicago saw 38.58% turnout and suburban Cook County saw 31.34% turnout. The general election saw 74.75% turnout, with 2,088,727 ballots cast. Chicago saw 75.13% turnout and suburban Cook County saw 74.36% turnout.
In the 2004 Clerk of the Circuit Court of Cook County election, incumbent first-term Clerk Dorothy A. Brown, a Democrat, was reelected.
Primaries
Democratic
Republican
General election
;Endorsements ;Results
Recorder of Deeds
In the 2004 Cook County Recorder of Deeds election election, incumbent Recorder of Deeds Eugene Moore, a Democrat, was reelected. Moore had first been appointed in 1999, and had been elected to a full-term in 2000.
Primaries
Democratic
Republican
General election
Republican nominee Cox had declared that his intent in seeking the office was to push for its elimination, as he argued that the office was an unnecessary duplication of services and had become a "model of waste and corruption". ;Endorsements ;Results
State's Attorney
In the 2004 Cook County State's Attorney election, incumbent second-term State's Attorney Richard A. Devine, a Democrat, was reelected.
In the 2004 Cook County Board of Review election, one seat, Democratic-held, was up for election. The incumbent won reelection. The CookCounty Board of Review has its three seats rotate the length of terms. In a staggered fashion, the seats rotate between two consecutive four-year terms and a two-year term.
3rd district
Incumbent second-term member Robert Shaw, a Democrat last reelected in 2002, lost reelection, being unseated by in the Democratic primary by Larry R. Rogers Jr., who went on to win the general election unopposed. Rogers' margin-of-victory over Shaw in the Democratic primary was narrow, at 1,087 votes. This election was to a four-year term.
Primaries
Democratic
Republican
No candidates, ballot-certified or formal write-in, ran in the Republican primary.
Pasrtisan elections were held for judgeships on the Circuit Court of Cook County due to vacancies. Retention elections were also held for the Circuit Court. Partisan elections were also held for subcircuit courts judgeships due to vacancies. Retention elections were held for other judgeships.
