Sean T. Noonan

About this race

The county's chief law-enforcement officer. Runs the sheriff's office and usually the county jail, patrols areas outside city police departments, and serves court papers.

2 candidates ran for DuPage County Sheriff in the general election on Tuesday, November 3, 2026.

Immigration enforcement (ICE 287(g))

ICE's list of 287(g) participating agencies shows no agreement for DuPage County's sheriff's office.

Under 287(g), ICE trains and authorizes local officers to carry out some federal immigration duties. From ICE's list of participating agencies, as of October 28, 2026. Whether to keep, change or end an agreement is up to the sheriff.

Where they stand

Center, from the giving patterns of their campaign donors (DIME campaign-finance score, Stanford). Based on the 39 donors to their 2016 campaign for supervisor. DIME doesn't name donors: it places each one by everyone they give to, then places the candidate by their donors.

Source: data · how scores are linked to one scale.

Funding

$337K raised, $10K from small donors.

Source: Illinois State Board of Elections, reports through 2026-10-28.

More about Sean T. Noonan

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Also running

• Peter Joseph Coolidge · Democrat

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Next elections here

• 2028 presidential election · Who has filed so far, from FEC filings

Quick answers

What party is Sean T. Noonan?

Sean T. Noonan is running as a Republican.

What does the DuPage County Sheriff seat do?

The county's chief law-enforcement officer. Runs the sheriff's office and usually the county jail, patrols areas outside city police departments, and serves court papers.

Who is Sean T. Noonan running against?

Peter Joseph Coolidge, for DuPage County Sheriff.

How much money has Sean T. Noonan raised?

$337K as of the latest state campaign-finance filings.

Is Sean T. Noonan liberal or conservative?

On SpectrumVote's left–right scale, Sean T. Noonan is center, from the giving patterns of their campaign donors (DIME campaign-finance score, Stanford). This comes from published research, not our opinion.

Should I vote for Sean T. Noonan?

SpectrumVote doesn't endorse anyone or tell you how to vote. Compare Sean T. Noonan's record, funding and endorsements with the other candidates in this race and decide based on what matters to you.