The Ballot Brief
Illinois
Candidate profile

Erin O'Brien

Republican · Illinois · 2026

On the ballot

Circuit Court, 12th Judicial Circuit, 5th Subcircuit, Vacancy of Hon. PetrungaroIllinois · 2026Will County sample ballot
Top priorities
  • Keeping politics out of the courtroom and following the law impartially
  • Making the judicial system more efficient
  • Holding offenders accountable

Per the campaign site.

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)

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How we source this

Profile facts follow official election office filings and the sources cited in each biography. Roster last verified September 29, 2026. Official sources are the final word on who appears on your ballot.

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