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2026 Illinois Primary Election

2026 Illinois Primary Election header

Cook County Treasurer

The Cook County treasurer is responsible for collecting, safeguarding, investing and distributing property tax funds.

Candidates

Did not participate

Maria Pappas

Incumbent Democrat

Did not participate in the 2026 voter guide.

Latest Coverage

Mayra Macías and Ald. Byron Sigcho-Lopez (25th Ward) appear on “Chicago Tonight” on July 22, 2026. (WTTW News)

Macías, Sigcho-Lopez Talk Next Steps After Ballot Removal in Race to Replace ‘Chuy’ García

(WTTW News)

Chicago Voters Will Be Asked to Condemn Aggressive Immigration Raids on November Ballot

Ald. Byron Sigcho-Lopez, left, and Mayra Macías. (Provided)

Sigcho-Lopez, Macías Failed to Qualify for 4th District Congressional Race: Elections Board

A student at the University of Illinois Chicago casts a ballot for the April 4, 2023, Chicago runoff election at the UIC Student Center polling location. (Michael Izquierdo / WTTW News)

Trump Doubles Down on Election Fraud Claims. Here’s What to Know About US Voting Security

Mayor Brandon Johnson presides over a meeting of the Chicago City Council in October 2024. (WTTW News)

Chicago Voters Won’t Weigh Whether to Tax Millionaires — But Will Be Asked About ShotSpotter, Festivals

Newly appointed U.S. interim Senator, Darline Graham Nordone, with South Carolina Gov. Henry McMaster, right, speaks to members of the press after being appointed of to fill the vacancy created by the passing of her brother, U.S. Senator Lindsey Graham, at the statehouse Monday, July 13, 2026, in Columbia, S.C. (AP Photo / Sean Rayford)

Darline Graham Nordone, Sister of Lindsey Graham, Chosen to Fulfill Remainder of His US Senate Term

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