The Ballot Brief
Will County, Illinois

Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. Petrungaro

One candidate is tracked for Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. Petrungaro on the November 3, 2026 ballot: Erin O'Brien. Candidate information follows official Will County election filings; verify with the official election office linked below.

IllinoisWill County › Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. Petrungaro

Erin O'Brien is on the November 3, 2026 ballot to fill a vacancy in the 5th Subcircuit of the 12th Judicial Circuit (the seat vacated by the Hon. Petrungaro). The 12th Judicial Circuit covers Will County, but this subcircuit seat is elected only by voters inside its own subcircuit boundaries (this county list cannot narrow which part; check your sample ballot or county clerk). Listed from the Illinois State Board of Elections' certified 2026 general election candidate list.

Erin O'Brien

Republican

Biography
Erin O'Brien is on the November 3, 2026 ballot for Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. Petrungaro, per the Illinois State Board of Elections' certified 2026 general election candidate list. This name has not yet been researched.

Questions about this race

Who is running for Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. Petrungaro in 2026?

One candidate is tracked for Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. Petrungaro on the November 3, 2026 ballot: Erin O'Brien. Candidate information follows official Will County election filings; verify with the official election office linked below.

When is the Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. Petrungaro 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 Will 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.

Sources
Verify this race
Candidate roster from official Will County and state election office filings, last verified 2026-09-12. Bios and priorities carry their attribution inline.
Cross-check with the official Illinois election office, or see the full Will County sample ballot and your exact ballot by address.