2 candidates are tracked for Lake County Treasurer on the November 3, 2026 ballot: David Penaherrera and Sandy Hart. Candidate information follows official Lake County election filings; verify with the official election office linked below.
David Penaherrera (Republican) and Sandy Hart (Democratic) meet on the November 3 ballot for this open seat; sitting Treasurer Holly Kim did not seek reelection, running instead for Illinois Comptroller, per the county's official candidate list and press reporting.
County treasurer. The county treasurer collects property taxes and other revenue, holds the county's funds, and invests them under state rules. The treasurer distributes tax collections to the county, cities, school districts and special districts that levy them. The office is a custodian of public money, not the body that sets the tax rate.
This race. Every voter in Lake County votes on this seat.
Illinois › Lake County › Lake County Treasurer
Republican
David Penaherrera describes himself as a young entrepreneur and loan officer, per David Penaherrera's own campaign Facebook post. No campaign website was found as of September 8, 2026; the official election filing is the only verifiable source for David Penaherrera.
Democratic
Per the campaign site.
Sandy Hart has chaired the Lake County Board since 2018, after first being elected to the board representing District 13 in 2012; she holds a BA from Indiana University's business school and an MBA from DePaul University, per Sandy Hart campaign site.
Who is running for Lake County Treasurer in 2026?
2 candidates are tracked for Lake County Treasurer on the November 3, 2026 ballot: David Penaherrera and Sandy Hart. Candidate information follows official Lake County election filings; verify with the official election office linked below.
When is the Lake County Treasurer 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 Lake 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 Lake 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 Lake County sample ballot and your exact ballot by address.
32 tracked races in Lake County, Illinois. Landed here from another county's search? Look up your own ballot below.