The Ballot Brief
Illinois
Candidate profile

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Erin O'Brien

Erin O'Brien

Republican · Illinois · 2026

On the November 3 ballot for Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. Petrungaro, Illinois

Was Erin O'Brien elected? The official answer comes December 4.

Illinois makes results final in three steps.
✓
Done · Nov 3
Votes were cast and counted
Election night totals are a first count, not the final one.
2
Happening now · by Nov 24
Counties double-check their counts
The county reviews mail ballots, provisional ballots and any recount, then sends official totals to the state.
3
Next · Dec 4
Illinois makes it official
The State Board of Elections certifies the result. The winner appears on this page that day.

What local news is reporting

Not official yetUpdated November 5, 2026

This report is cited to the outlet that published it. We do not call races. Official running count: Illinois official results.

Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. Petrungaro
No report found yet

Reports are checked daily until Illinois certifies on December 4; a certified winner replaces the report on that day.

Top priorities

From the campaign site

  • Keeping politics out of the courtroom and following the law impartially
  • Making the judicial system more efficient
  • Holding offenders accountable
Biography

O'Brien is an attorney and small business owner who opened a Joliet family law practice in 2008, handling divorce, child support, and custody cases and conducting more than 700 court-appointed and voluntary mediations, per the campaign site. O'Brien previously handled personal injury and criminal defense cases in Will County and has served as past president of the Will County Bar Association, per the campaign site.

Campaign site (opens in a new tab)

On the ballot

Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. PetrungaroIllinois · 2026Will County sample ballot

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Voting info and more

Voting info and more
How we source this

Profile facts follow official election office filings and the sources cited in each biography. Roster last verified November 2, 2026. Official sources are the final word on who appears on your ballot.

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