2026 General Election · Tuesday, November 3, 2026

Missouri House District 107

2 candidates, listed alphabetically.

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Candidates

Mark Matthiesen

RepublicanIncumbent

In office now: State Representative, District 107 (since 2016)
Work: State Representative, Missouri House District 107; licensed real estate agent

Mark Matthiesen has served as State Representative for District 107 in the Missouri General Assembly since 2016, a district that includes all or part of St. Charles County.

Mark Matthiesen is a licensed real estate agent with a hospitality management degree from Missouri State. He was first elected to the Missouri House in 2016 and again in 2022.

Matthiesen's committees

Insurance (Vice-Chairman)
Ways and Means
Consent and Procedure
General Laws

Sources for Matthiesen

Mark Matthiesen: official member information (Missouri House of Representatives, Public record)
Missouri General Assembly: current member roster (Missouri House of Representatives, Public record)

Gary Wester

Democratic

Work: Retired; treasurer, University of Missouri St. Charles Extension Council

Gary Wester is retired and volunteers with the Missouri Master Naturalist program and Stream Team, and is treasurer of the University of Missouri St. Charles Extension Council.

Sources for Wester

Gary Wester - 2026 candidate profile (The Ballot Brief, Facts summarized from a public page (not copied))

Sources

Candidate list and race details

Certification of Candidates and Party Emblems, General Election Nov. 3, 2026 (Missouri Secretary of State, Public record)

What's included: U.S. Senate and House, statewide offices, every state legislative district on the ballot and statewide ballot measures.
Everything else: Local races (county, city, school board, judges) and anything else on your ballot are on your official sample ballot: voteroutreach.sos.mo.gov.
Candidate lists: As of Wednesday, October 14, 2026.

This is not an official ballot. Confirm your registration, polling place and ballot with your election office through vote.gov.