The Ballot Brief
Missouri
Candidate profile

We use AI to research and write election information. Errors are possible. Verify important details with official sources.

Mark Matthiesen

Republican · Missouri · 2026 · Incumbent

Running for Missouri House District 107, Missouri

Top priorities

From the campaign site

  • Limiting growth in property tax assessments and the state budget
  • Opposing government vaccine mandates
  • Establishing safe nurse staffing levels in Missouri hospitals
Biography

Mark Matthiesen is a residential realtor who has represented Missouri House District 107 in St. Charles County since 2016, per the Missouri House of Representatives member directory and the campaign site.

Campaign site (opens in a new tab)

On the ballot

Missouri House District 107Missouri · 2026St Charles County sample ballot

See your full ballot

Your address is only used to match your districts.

Voting info and more

Voting info and more
How we source this

Profile facts follow official election office filings and the sources cited in each biography. Roster last verified October 16, 2026. Official sources are the final word on who appears on your ballot.

Verify with the official filingSee everything on your ballotMissouri 2026 ballotThe Ballot Brief home