The Ballot Brief
Illinois
Candidate profile

Margaret "Peggy" O'Connell

Democratic · Illinois · 2026

On the ballot

Judge of the Appellate Court, 3rd Judicial District (vacancy of Hon. Mary W. McDade)Illinois · 2026Kankakee County sample ballotJudge of the Appellate Court, Third Judicial DistrictIllinois · 2026Will County sample ballotJudge of the Appellate Court, Third Judicial District (vacancy of the Hon. Mary W. McDade)Illinois · 2026Dupage County sample ballot
Biography

Margaret O'Connell has served as a DuPage County Circuit Judge since 2020, currently presiding over the felony division, after working as a DuPage County Assistant State's Attorney, Assistant Attorney General and in private practice, per Illinois State Bar Association judicial evaluations. No campaign website was found as of September 8, 2026; the official election filing is the only verifiable source for Margaret "Peggy" O'Connell.

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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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