2 candidates are tracked for Cook County Assessor on the November 3, 2026 ballot: Pat Hynes and Nico Tsatsoulis. Candidate information follows official Cook County election filings; verify with the official election office linked below.
On Cook County's November 3, 2026 general election ballot, per the Cook County Clerk's official candidate filing list. Open seat: the Democratic nomination was decided in the March 17 primary, where the sitting assessor was defeated.
Property assessor. The assessor determines the taxable value of every parcel of real estate and, in many states, of business property, using state-set methods and market data. Those values, multiplied by rates set by other elected bodies, produce property tax bills. The assessor also administers exemptions such as homestead or senior exemptions.
This race. Every voter in Cook County votes on this seat.
Illinois › Cook County › Cook County Assessor
Democratic
Per the campaign site.
Pat Hynes is the Lyons Township Assessor with more than 30 years of property tax experience; he won the Democratic nomination by defeating the sitting assessor in the March 17, 2026 primary, per WTTW's voter guide and Chicago election coverage.
Libertarian
Per the campaign site.
Tsatsoulis has worked in finance, retail, wholesale, and real estate, and holds an MBA in finance from the University of Chicago, per the campaign site. Tsatsoulis currently manages a residential building in Chicago, per the campaign site.
Who is running for Cook County Assessor in 2026?
2 candidates are tracked for Cook County Assessor on the November 3, 2026 ballot: Pat Hynes and Nico Tsatsoulis. Candidate information follows official Cook County election filings; verify with the official election office linked below.
When is the Cook County Assessor election in Illinois?
Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for Illinois are on the Illinois election hub at theballotbrief.com.
How do I see my exact Cook County ballot?
Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.
Candidate roster from official Cook County and state election office filings, last verified September 27, 2026. Bios and priorities carry their attribution inline.
Cross-check with the official Illinois election office, or see the full Cook County sample ballot and your exact ballot by address.
135 tracked races in Cook County, Illinois. Landed here from another county's search? Look up your own ballot below.