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Cook County Sheriff Election 2026 Results: Dart's Lead Builds Over Sandefur [Live Updates]

A blowout is in the making in the Cook County Sheriff's race with Democrat Tom Dart surging past Libertarian challenger Brad Sandefur.

| Updated
Democratic incumbent Tom Dart faced Libertarian challenger Brad Sandefur in the 2026 Cook County Sheriff's race. (Tom Dart/Brad Sandefur Campaigns)

COOK COUNTY, IL—UPDATED 8:08 p.m.—A blowout appears to be in the making with Democrat incumbent Tom Dart galloping ahead of Libertarian challenger Brad Sandefur in the Cook County Sheriff's race, with 38 percent of votes counted. .

Election results:

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Polls closed at 7 p.m., and election officials began tallying ballots. Check back throughout the evening for updates as vote totals are released.

Tom Dart is the longest serving sheriff in Cook County history. He is running for his sixth term. As Cook County Sheriff, Dart oversees a police department that patrols and investigates crimes while also hunting for fugitives throughout suburban Cook County.

He also oversees more than 10,000 inmates and 3,000 correctional officers at the Cook County Jail—the largest single-site jail in the nation. Additionally, sheriff's deputies are responsible for providing judicial safety in hundreds of courtrooms scattered across Cook County, while they are also responsible for serving thousands of court orders every year, according to Dart's campaign bio.

Dart brings extensive law enforcement and political experience, including serving in the Illinois House (1992 to 2003), the Illinois Senate (1991-1992) and was a Cook County assistant state's attorney from 1987 to 1991.

He told WTTW that he is running because he is as passionate about the job as he was when he started.

"The Cook County Sheriff's Office not only is responsible for public safety but is also one of the state's largest mental health providers—a responsibility we see as critical to the safety and security of our community."

Dart claims to bring a reformative vision to his role as sheriff. After recognizing that much of the population in Cook County Jail needed mental health treatment, Dart worked with Cermak Health to provide detainees in custody with mental health treatment plans.

In 2008, Dart became the first sheriff in the nation to respond to the mortgage foreclosure crisis, announcing the sheriff's deputies would no longer conduct evictions until greater safeguards could be put in place to protect tenants.

He also touted that the Cook County Sheriff's Department has become a "national model for innovation in law enforcement."

Dart touted his successes as creating the county's first animal crimes task force to combat dog fighting and establishing a first-of-its-kind prostitute intervention team. In March 2009, Dart drew headlines and accolades from around the country when he filed a federal lawsuit against the popular website Craigslist, accusing its owners of creating a public nuisance through its "erotic services" section, calling it "the single largest source of prostitution in America."

Sandefur said he was running "to put law-abiding American Cook County citizens ahead of criminals, stop the release of dangerous criminals back onto the street without their ever having seen the inside of the jail, and to stop the continuing political reward system."

Sandefur served in the U.S. Marine Corps. He joined the Cook County Sheriff's Department in 1990, where he has served as a correctional officer, police officer, tactical officer, investigator, academy instructor and supervisor. Seventeen of those years has been supervisory leadership.

He served in the U.S. Marine Corps. He joined the Cook County Sheriff's Department in 1990, where he has served as a correctional officer, police officer, tactical officer, investigator, academy instructor and supervisor. Seventeen of those years has been supervisory leadership.

He said he built his campaign on six commitments: justice, community, safety, mental health, training and service.

Sandefur supports major changes to the SAFE-T Act and Pretrial Fairness Act, with stronger public-safety safeguards and more effective handling of repeat offenders. He brings a rank-and-file mentality to prioritize more cross-training, broader arrest procedures, stronger preparation for specialized and street assignments so deputies are equipped to respond safely, confidently and professionally.

He told WTTW the most pressing issue facing Cook County residents is the high crime rate, pointing to "recently publicized false reporting of crime data" reported in the Chicago Contrarian, "To make it appear that crime is down has given a false sense of increased safety to the public. There is no single solution to reducing crime. Eliminating crime will never happen, so reduction is the achievable goal."

Election results are unofficial until certified by election authorities. This story will be updated as additional vote totals become available.

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