Thomas Dart

Thomas Dart

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Democratic Party

Candidate, Cook County Sheriff

Cook County Sheriff

Tenure

2006 - Present

Term ends

2026

Years in position

19

Report an officeholder change

Elections and appointments

Last elected

November 8, 2022

Next election

March 17, 2026

Contact

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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 declared candidacy for the Democratic primary scheduled on March 17, 2026.^[source]

Elections

2026

See also: Municipal elections in Cook County, Illinois (2026)

General election

The primary will occur on March 17, 2026. The general election will occur on November 3, 2026. General election candidates will be added here following the primary.

Democratic primary

Democratic primary for Cook County Sheriff

Incumbent Thomas Dart (D) is running in the Democratic primary for Cook County Sheriff on March 17, 2026.

		Candidate
	Submit photo	Thomas Dart

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	Incumbents are bolded and underlined.
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Libertarian Party primary

Libertarian primary for Cook County Sheriff

Brad Sandefur (L) is running in the Libertarian Party primary for Cook County Sheriff on March 17, 2026.

		Candidate
		Brad Sandefur

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	There are no incumbents in this race.
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Endorsements

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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
✔	Submit photo	Thomas Dart (D)	74.2	1,041,525
		Lupe Aguirre (R)	22.9	321,252
		Brad Sandefur (L)	2.9	40,752

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	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 1,403,529
= candidate completed the Ballotpedia Candidate Connection survey.
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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
✔	Submit photo	Thomas Dart	86.2	314,427
	Submit photo	Noland Rivera	13.8	50,455

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	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 364,882
= candidate completed the Ballotpedia Candidate Connection survey.
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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

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	There were no incumbents in this race. The results have been certified. Source	Total votes: 1,957
= candidate completed the Ballotpedia Candidate Connection survey.
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2018

See also: Municipal elections in Cook County, Illinois (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
✔	Submit photo	Thomas Dart (D)	100.0	1,455,825

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	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 1,455,825
= candidate completed the Ballotpedia Candidate Connection survey.
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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
✔	Submit photo	Thomas Dart	100.0	640,512

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	Incumbents are bolded and underlined. The results have been certified.	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

See also: Ballotpedia's Candidate Connection

Thomas Dart has not yet completed Ballotpedia's 2026 Candidate Connection survey. If you are Thomas Dart, click here to fill out Ballotpedia's 2026 Candidate Connection survey.

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2022

Thomas Dart did not complete Ballotpedia's 2022 Candidate Connection survey.

See also

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