Prediction Edge
Republican
James Mendrick

James Mendrick

Republican candidate for Governor in Illinois

Live Odds — Illinois Republican Governor nominee?

Current prediction-market probability for the candidate, updated as market prices change.

1%chance to win

$96.4KMAR 24, 2026

Candidate Overview

Key details about the candidate’s background, party, office sought and current campaign.

Current roleSheriff

PartyRepublican

Political ideologyConservative Republican

GenderMale

LocationIllinois

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BackgroundLaw enforcement officer

EducationLewis University — BA, Criminal Justice

Notable personal detailsJames Mendrick is an American law enforcement officer and politician who has served as Sheriff of DuPage County, Illinois (elected in 2018). He previously worked in the DuPage County Sheriff’s Office and has described his role as a commander and deputy. In 2025 he entered the Republican primary for Governor of Illinois, campaigning with a public-safety focus.

SourcesShow

Political Positions

LiberalConservative

Economy & Taxes

Supports lowering taxes and cutting regulations to attract businesses, auditing government spending to eliminate waste, and balancing the state budget without deficit spending. Advocates fiscal responsibility and business-friendly policies to grow jobs and the economy.

Healthcare

Supports reducing state-funded healthcare spending (including programs for undocumented immigrants) and expanding treatment-focused programs in jails; emphasizes cutting wasteful government spending on healthcare and prioritizing fiscal restraint. Campaign materials highlight partnerships with local health departments for medication‑assisted treatment (MAT) for inmates and addiction recovery programs. News coverage records Mendrick criticizing Illinois’ immigrant healthcare spending and calling for policy changes to end such programs.

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Immigration & Border

Supports ending Illinois’ sanctuary policies, restoring state cooperation with federal immigration authorities (including granting ICE access to county jails), and removing criminal noncitizen migrants from custody prior to release. Frames immigrant-related state spending as a problem and favors stronger enforcement measures rather than expanded legal pathways or regularization.

Latest News

AINews Summary
Last updatedJul 15, 2026

James Mendrick is in the news because he is one of the Republican candidates competing to challenge Illinois Gov. JB Pritzker in the 2026 governor’s race. The primary has now been held, and reporting says Darren Bailey won the GOP nomination, so Mendrick is no longer the party’s nominee. Coverage around the race has focused on the rematch setup in Illinois and the final primary results.

ilsheriff.org+57

Latest Polls

Illinois Republican Governor nominee?

Recent polling results and the candidate's current average in the race.

James Mendrick currently averages 5.8%, ranking third in this race, 0.5 points behind the next candidate.

Polling average: 5.8%Position: thirdMargin: -0.5 ptsLatest poll: 4.0% (Jan 20 - 23)Polls included: 4

Average recalculated from polls through Jan 20 - 23.

Polling Average
50%40%30%20%10%0%
5.8%
39.4%
6.4%
5.0%
James Mendrick
J. Mendrick
Darren Bailey
D. Bailey
Ted Dabrowski
T. Dabrowski
Rick Heidner
R. Heidner
Joseph Severino
J. Severino
Date (Start - End)SpreadMendrickBaileyDabrowskiHeidnerSeverino
Polling Average
Bailey+33.5
5.8%39.4%6.4%5.0%2.3%
Osage ResearchJan 20 - 23
Bailey+53.0
4.0%57.0%8.0%9.0%
Emerson CollegeJan 3 - 5
Bailey+29.0
5.4%34.4%8.2%1.1%2.3%
Reveille ResearchSep 4 - 6
Bailey+26.0
5.0%31.0%3.0%
Reveille ResearchSep 4 - 6
Bailey+26.0
9.0%35.0%

Aggregation source: FiftyPlusOne

Endorsements

3
Illinois Republican Governor nominee?

New updates coming soon

We're monitoring and will update when new data impacts the race.

  • Fundraising