Missouri › St Charles County › Missouri House District 108
2 candidates are tracked for Missouri House District 108 on the November 3, 2026 ballot: Mike Costlow and Stephen Scott. Candidate information follows official St Charles County election filings; verify with the official election office linked below.
Mike Costlow (Republican), Stephen Scott (Democratic) meet on the November 3 ballot; Mike Costlow is the sitting member per the House roster. Missouri has no runoffs; the August 4 primary winner of each party is the nominee, and unopposed nominees still print. The field is the Missouri Secretary of State's certified general election candidate list (certified August 25, 2026). This seat is elected by district; only the district covering your address appears on your ballot.
Mike Costlow is the Republican nominee for Missouri House District 108 on the November 3, 2026 ballot, per the Missouri Secretary of State's certified general election candidate list.
2026 priorities (per the campaign site)
- Protecting Lake St. Louis waterways from pollution as the region grows
- Cybersecurity protections for the state
- Supporting local control of Missouri government decisions
Source: candidate campaign site, roster verified 2026-09-06.
Campaign site →
Stephen Scott is the Democratic nominee for Missouri House District 108 on the November 3, 2026 ballot, per the Missouri Secretary of State's certified general election candidate list. No campaign website or questionnaire response was found as of September 6, 2026.
