The Ballot Brief
Lake County, Illinois

Lake County Treasurer

IllinoisLake County › Lake County Treasurer

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.

David Penaherrera

Republican

David Penaherrera describes himself as a young entrepreneur and loan officer, per David Penaherrera's own campaign Facebook post. No campaign website or questionnaire response was found as of September 8, 2026; the official election filing is the only verifiable source for David Penaherrera.

Sandy Hart

Democratic

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.

2026 priorities (per the campaign site)

Source: candidate campaign site.

Campaign site →
Verify this race
Candidate roster from official Lake County Supervisor of Elections filings. 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.