Thomas Dart
Thomas Dart (Democratic Party) (also known as Tom) is the Cook County Sheriff in Illinois. He assumed office in 2006. His current term ends on December 1, 2026.
Dart (Democratic Party) is running for re-election for Cook County Sheriff in Illinois. He is on the ballot in the general election on November 3, 2026. He advanced from the Democratic primary on March 17, 2026.
Elections
2026
See also: Municipal elections in Cook County, Illinois (2026)
General election
The general election will occur on November 3, 2026.
The candidate list in this election may not be complete.
General election for Cook County Sheriff
Incumbent Thomas Dart (D) and Brad Sandefur (L) are running in the general election for Cook County Sheriff on November 3, 2026.
Candidate | ||
| Thomas Dart (D) | ||
 | Brad Sandefur (L) | |
| ||||
 = candidate completed the Ballotpedia Candidate Connection survey. | ||||
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Democratic primary
The candidate list in this election may not be complete.
Democratic primary for Cook County Sheriff
Incumbent Thomas Dart (D) advanced from the Democratic primary for Cook County Sheriff on March 17, 2026.
Candidate | % | Votes | ||
| ✔ | Thomas Dart | 100.0 | 280,877 | |
| Total votes: 280,877 | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
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Republican primary
The Republican primary scheduled for March 17, 2026, was canceled.
Libertarian Party primary
The candidate list in this election may not be complete.
Libertarian primary for Cook County Sheriff
Brad Sandefur (L) advanced from the Libertarian Party primary for Cook County Sheriff on March 17, 2026.
Candidate | ||
| ✔ | | Brad Sandefur |
| ||||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
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Endorsements
Dart received the following endorsements. To send us additional endorsements, click here.
- Cook County, Ill., Democratic Party
- International Union of Operating Engineers (IUOE) Local 150
- Chelsea Laliberte Barnes’ Voter Guide (Sway viewpoint group by Chelsea Laliberte Barnes)
- Chicago’s Progressive Northside Dems Organization (Sway viewpoint group by 40th Ward Democratic Organization)
- Danielle Moss' Voter Guide (Sway viewpoint group by Danielle Moss)
- KO Illinois (Sway viewpoint group by Ken Obel)
- Liberal Moms of the NW Suburbs (Sway viewpoint group by Melissa Parry)
- Liz Minnella’s Voter Guide (Sway viewpoint group by Liz Minnella)
- March 17 matters in Illinois! Early Voting is open! (Sway viewpoint group by The Lake Forest Women's Collective)
- MowreyMovement (Sway viewpoint group by Christopher Mowrey)
- The Chicago Crusader
- buildtomorrow.chi (Sway viewpoint group by buildtomorrow.chi)
2022
See also: Municipal elections in Cook County, Illinois (2022)
General election
General election for Cook County Sheriff
Incumbent Thomas Dart defeated Lupe Aguirre and Brad Sandefur in the general election for Cook County Sheriff on November 8, 2022.
Candidate | % | Votes | ||
| ✔ | Thomas Dart (D) | 74.2 | 1,041,525 | |
 | Lupe Aguirre (R) | 22.9 | 321,252 | |
| Brad Sandefur (L) | 2.9 | 40,752 | |
| Total votes: 1,403,529 | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
Democratic primary election
Democratic primary for Cook County Sheriff
Incumbent Thomas Dart defeated Noland Rivera in the Democratic primary for Cook County Sheriff on June 28, 2022.
Candidate | % | Votes | ||
| ✔ | Thomas Dart | 86.2 | 314,427 | |
| Noland Rivera | 13.8 | 50,455 | ||
| Total votes: 364,882 | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
Libertarian primary election
Libertarian primary for Cook County Sheriff
Brad Sandefur advanced from the Libertarian primary for Cook County Sheriff on June 28, 2022.
Candidate | % | Votes | ||
| ✔ | | Brad Sandefur | 100.0 | 1,957 |
| Total votes: 1,957 | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
2018
General election
General election for Cook County Sheriff
Incumbent Thomas Dart won election in the general election for Cook County Sheriff on November 6, 2018.
Candidate | % | Votes | ||
| ✔ | Thomas Dart (D) | 100.0 | 1,455,825 | |
| Total votes: 1,455,825 | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
Democratic primary election
Democratic primary for Cook County Sheriff
Incumbent Thomas Dart advanced from the Democratic primary for Cook County Sheriff on March 20, 2018.
Candidate | % | Votes | ||
| ✔ | Thomas Dart | 100.0 | 640,512 | |
| Total votes: 640,512 | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
Withdrawn or disqualified candidates
- Edward Acevedo (D)
- John Fairman (D)
Campaign themes
2026
Ballotpedia survey responses
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Campaign website
Dart's campaign website stated the following:
As sheriff, Dart is responsible for overseeing 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, Dart’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.
Dart has used his diverse background to bring a unique approach to each of those efforts at the Sheriff’s Department.
A former state prosecutor and state legislator, Dart has long fought for the rights of others and protecting the most vulnerable of our society.
As a Cook County State’s Attorney, Dart helped initiate a massive public corruption investigation in Ford Heights – specifically focusing on its corrupt police department. Residents of the poverty-stricken suburb had been abused by officers, many of whom had developed partnerships with neighborhood drug dealers. Dart’s pursuit of justice led to criminal convictions of numerous officers.
In 1991, Dart was appointed to fill a vacant state Senate seat and in 1992, he won a seat in the state House of Representatives, representing a diverse district on the South Side of Chicago. He was one of the only state legislators to work full-time in his position, focusing on his constituents and refusing outside employment.
In the legislature, he developed a reputation as a persistent lawmaker, sponsoring hundreds of bills, while demanding accountability from state officials and showing a strong willingness to take on state bureaucracy. Upon taking office, he immediately instituted changes at the Cook County Jail, installing new technologies, including introducing body-scanning machines to prevent contraband from getting inside, while also raising standards for employment. Dart also created a weapons-free committee, focusing on how inmates are creating knives in the jail – an effort that led to a substantial drop in the number of violent incidents there.
Dart was also the first Sheriff in the nation to respond to the mortgage foreclosure crisis when, in October 2008, he announced his deputies would no longer conduct evictions until greater safeguards could be put into place to protect tenants. That stand resulted in new rules that banks must follow before deputies will carry out an eviction order. Those new rules include requirements that banks sign a sworn affidavit affirming all tenants of a home have received proper notification of – and given time to appeal – an eviction. Dart also committed to assigning a staff attorney to investigate potential cases of mortgage fraud, while also assigning a social worker to begin going out with eviction teams, in hopes of linking those families with social service agencies.
Dart also committed to assigning a staff attorney to investigate potential cases of mortgage fraud, while also assigning a social worker to begin going out with eviction teams, in hopes of linking those families with social service agencies.
This unique approach drew international attention and earned Dart an opportunity to shine a spotlight on the foreclosure crisis via forums such as CNN, MSNBC, Fox News and the BBC.
In November, Dart testified before the U.S. Senate Judiciary Committee, providing details to Senators about how the foreclosure crisis is impacting Cook County neighborhoods.
In the legislature, he developed a reputation as a persistent lawmaker, sponsoring hundreds of bills, while demanding accountability from state officials and showing a strong willingness to take on state bureaucracy.
He served as chief sponsor of more than a dozen new child welfare bills and successfully fought for both an audit of the Illinois Department of Children Family Services and the appointment of an inspector general for that agency.
Dart wrote the state’s groundbreaking Sexually Violent Predators Commitment Act, which requires sex offenders to remain in a supervised setting if they’re deemed likely to re-offend. He also chaired a House task force on protecting the rights of abused and neglected children.
Also while in the Legislature, Dart co-chaired the House prison oversight committee, where he developed new management and accountability standards for the Department of Corrections.
Dart is involved in many ongoing community initiatives, such as sponsoring a Safe Neighborhoods bill, toughening penalties against those involved in gun crimes.
Dart also led a first-ever study on the connection between homelessness and prostitution, while also introducing bills that would steer women charged with non-violent crimes to alternative sentencing programs instead of to jail.
These efforts provided a natural transition for Dart to be elected Cook County Sheriff in 2006.
Dart again made worldwide headlines in March 2009 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,” Dart demanded the website either better monitor those postings or remove the category altogether. Dart cited the number of human trafficking and juvenile prostitution arrests his vice officers have made in calling for the change. Just two months later, amid growing national pressure, craigslist’s administrators relented and made the very changes Dart demanded.
Continuing that fight, Dart established a first-of-its-kind prostitution intervention team, which has drawn nationwide interest. Made up of former prostitutes and licensed supervisors, sheriff’s staffers accompany vice officers on prostitution stings and perform on-site intervention after an arrest, encouraging women to immediately go to a recovery house and proceed with life-changing choices.
Dart has also infiltrated Cook County’s growing world of dog fighting with the department’s first animal crimes unit. That unit secured the department’s first-ever bust of a dog fight in progress and also made the largest seizure of fighting dogs in state history. Dart is now pushing to make it a felony to attend a dog fight. Dart also formed a public corruption and financial crimes task force, while also making efforts to publicize long-unsolved cold cases, through community awareness as well as by making case information available online.
— Thomas Dart's campaign website (March 27, 2026)
2022
Thomas Dart did not complete Ballotpedia's 2022 Candidate Connection survey.
See also
2026 Elections
External links
Footnotes
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