Missouri › St Louis County › County Council District 3
2 candidates are tracked for County Council District 3 on the November 3, 2026 ballot: Andrew Koenig and Mark Osmack. Candidate information follows official St Louis County election filings; verify with the official election office linked below.
An open seat: Dennis Hancock is vacating it to run for county executive. Neither party has an August 4 contest, so Koenig and Osmack advance to a November 3 matchup. Appears only on District 3 ballots.
A former state senator and representative who says he passed the state's first income tax cut in nearly a century, and a small business owner raising five children in west county, per a campaign announcement carried by The Missouri Times.
2026 priorities
- Reduce what he calls wasteful county spending, per his campaign announcement
- Tax relief and fiscal accountability, per his announcement
- Legislative budget-oversight experience, per his announcement
A U.S. Army veteran who deployed to Afghanistan during the 2010 to 2011 surge and earned a Bronze Star, per his campaign site. He describes himself as focused on the bottom line, not politics, per his site.
2026 priorities
- Affordable housing, utilities, and essential services, per his campaign site
- Repair and maintain county roads and sidewalks, per his site
- Fiscal responsibility and budget transparency, per his site
Source: candidate campaign site, roster verified 2026-08-29.
Campaign site →