Platte County, Missouri

Presiding Commissioner

2 candidates are tracked for Presiding Commissioner on the November 3, 2026 ballot: Jason Maki and Mary McKenna. Candidate information follows official Platte County election filings; verify with the official election office linked below.

About this race

August 4 primary result: Jason Maki (70 percent) won the Republican nomination over Gena L. Ross (30 percent) and advances to the November 3 ballot, per plattecountylandmark.com reporting of the official results (re-verify against the certified canvass). Incumbent Scott Fricker withdrew after filing, leaving a contested Republican ballot on August 4; Mary McKenna is unopposed on the Democratic side, and independent Dale Brouk goes directly to November 3, per the certified candidate list and the Platte County Landmark.

What this office does

County commissioner. The county board is the county's legislative and, in most states, executive body. Commissioners adopt the county budget and property tax rate, oversee roads, the jail, public health, planning and zoning in unincorporated areas, and appoint or confirm department heads. In counties with an elected county executive or judge, the board's role is mainly the budget and ordinances.

Missouri › Platte County › Presiding Commissioner

Jason Maki

Republican

Top priorities

Holding the line on taxes and cost of living
Funding public safety and infrastructure first
Transparency and accountability in county spending

Per the Platte County Landmark.

Biography

Maki is a Platte County resident and small business owner in the technology industry, per the campaign site. He previously lived in Hennepin County, Minnesota. As a private citizen he studied Missouri's Sunshine Law and pursued an open records case that led to a large settlement, for which he was recognized as a Sunshine Hero by the Missouri Press Association and the Missouri Sunshine Coalition. He also coaches youth football with the YMCA and the Catholic Youth Organization.

Campaign site (opens in a new tab)

Mary McKenna

Democratic

Top priorities

Wants the commission to implement the voter-approved children's mental health sales tax
Wants infrastructure and public safety planning to keep pace with the county's rapid growth
Emphasizes accountability and transparency in county government

Per The Platte County Landmark Newspaper.

Biography

Mary McKenna has spent her career in the communications industry and has lived in Platte County for more than 40 years, per The Platte County Landmark Newspaper. She is the Democratic candidate for Platte County Presiding Commissioner.

Campaign site (opens in a new tab)

Next on your ballotPlatte County Clerk

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Voting info and more

Questions about this race

Who is running for Presiding Commissioner in 2026?

When is the Presiding Commissioner election in Missouri?

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

How do I see my exact Platte 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 Platte County and state election office filings, last verified October 2, 2026. Bios and priorities carry their attribution inline.

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

The rest of your Platte County ballot

11 tracked races in Platte County, Missouri. Landed here from another county's search? Look up your own ballot below.

Also on your ballot

Platte County Recorder of Deeds Platte County Auditor Platte County Collector See all 11 Platte County races

Candidate profiles

Jason Maki, full profile Mary McKenna, full profile Official Missouri election office