Rock Island County, Illinois

Rock Island County Sheriff

2 candidates are tracked for Rock Island County Sheriff on the November 3, 2026 ballot: Marcus Herbert and Jamie M. Shoemaker. Candidate information follows official Rock Island County election filings; verify with the official election office linked below.

About this race

Marcus Herbert is the Democratic nominee and Jamie M. Shoemaker is the Republican nominee, per the county clerk's certified candidate list.

What this office does

Sheriff. The sheriff runs the county's law enforcement agency, operates the county jail, provides courthouse security and serves court papers such as warrants, subpoenas and evictions. In many counties the sheriff's office is the primary police force for areas outside city limits. The sheriff hires deputies and manages the office's budget within what the county board approves.

This race. Every voter in Rock Island County votes on this seat.

Illinois › Rock Island County › Rock Island County Sheriff

Marcus Herbert

Democratic

Top priorities

A sheriff's office that is transparent, innovative, and responsive to the needs of all residents
Community-oriented policing and building relationships between law enforcement and residents

Per the campaign site.

Biography

Marcus Herbert is a Sergeant with the Rock Island County Sheriff's Office with 20 years of service, currently supervising patrol operations, per Herbert's campaign website. Herbert began as a correctional officer in 2005, became a deputy sheriff in 2010 after graduating from the Police Training Institute at the University of Illinois, and earned bomb technician certification through the FBI's Hazardous Device School in 2014, and commands the Quad City Bomb Squad, per Herbert's campaign website.

Campaign site (opens in a new tab)

Jamie M. Shoemaker

Republican

Top priorities

Created and leads the IMPACT program, which provides resources for people experiencing mental illness, substance use, and crisis situations
Led the county's Dementia Friendly Community certification and established a Dementia Task Force
Serves on the Internet Crimes Against Children task force

Per the campaign site.

Biography

Jamie M. Shoemaker is a Detective with the Geneseo Police Department who began her law enforcement career in 2015 with the Rock Island County Sheriff's Office, per Shoemaker's campaign website. Shoemaker is an FBI-certified crisis negotiator and a board member of the Illinois Crisis Negotiator Association, and was named the 2024 Illinois Law Enforcement Training and Standards Board Female Officer of the Year, per Shoemaker's campaign website.

Campaign site (opens in a new tab)

Next on your ballotRock Island County Treasurer

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Voting info and more

Questions about this race

Who is running for Rock Island County Sheriff in 2026?

When is the Rock Island County Sheriff election in Illinois?

Election Day is Tuesday, November 3, 2026. Registration deadlines, early voting dates and mail ballot rules for Illinois are on the Illinois election hub at theballotbrief.com.

How do I see my exact Rock Island County ballot?

Enter your ZIP code in the lookup at theballotbrief.com for the statewide and congressional races, or a full street address to add the county, city and district contests for that location.

Verify this race

Candidate roster from official Rock Island County and state election office filings, last verified September 27, 2026. Bios and priorities carry their attribution inline.

Cross-check with the official Illinois election office, or see the full Rock Island County sample ballot and your exact ballot by address.

The rest of your Rock Island County ballot

23 tracked races in Rock Island County, Illinois. Landed here from another county's search? Look up your own ballot below.

Also on your ballot

Rock Island County Board, District 2 Rock Island County Board, District 3 Rock Island County Board, District 5 See all 23 Rock Island County races

Candidate profiles

Marcus Herbert, full profile Jamie M. Shoemaker, full profile Official Illinois election office