Lake County, Illinois

Lake County Treasurer

Penaherrera and Hart are on the November 3, 2026 ballot. Names follow official Lake County election filings.

About this race

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.

What this office does

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.

We use AI to research and write election information. Errors are possible. Verify important details with official sources.

Illinois › Lake County › Lake County Treasurer

David Penaherrera

Republican

Biography

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.

Sandy Hart

Democratic

Top priorities

From the campaign site

Ensure fiscal responsibility and the security of county funds
Enhance transparency and the integrity of the tax system
Strengthen oversight of treasury operations for working families

Biography

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.

Campaign site (opens in a new tab)

Next on your ballotLake County Sheriff

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Voting info and more

Questions about this race

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.

Verify this race

Candidate roster from official Lake County and state election office filings, last verified October 19, 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.

The rest of your Lake County ballot

32 tracked races in Lake County, Illinois. Landed here from another county's search? Look up your own ballot below.

Also on your ballot

Lake County Regional Superintendent of Schools Lake County Board Member, District 1 Lake County Board Member, District 3 See all 32 Lake County races

Candidate profiles

David Penaherrera, full profile Sandy Hart, full profile Official Illinois election office