The Ballot Brief
Illinois
Candidate profile

Sean T. Noonan

Republican · Illinois · 2026

On the ballot

DuPage County SheriffIllinois · 2026Dupage County sample ballot
Top priorities
  • Transparent leadership to earn the confidence of deputies and residents
  • Data-driven crime prevention and coordinated enforcement
  • Prioritize deputy morale, recruitment and professional development

Per the campaign site.

Biography

Sean Noonan has spent 23 years in law enforcement, including as a supervisor, and served eight years as an elected DuPage County Board member, per Sean Noonan campaign site. Noonan's law enforcement career was largely with the Bloomingdale Police Department, where he rose to sergeant; he is currently a police officer for the City of Oakbrook Terrace, per Daily Herald / DuPage Policy Journal reporting.

Campaign site (opens in a new tab)

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Voting info and more

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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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