Mike Derby

Mike Derby is on the 2026 ballot for two Republican roles. He is the **Sensible-endorsed candidate for SD State House · District 34** — a state legislative seat he currently holds. This row represents a separate party-organization role (precinct committeeman), not the legislative seat. For his full biography, voting record, and our rationale for endorsing him, see [sensiblesouthdakota.org/candidates/mike-derby-b76d89](https://sensiblesouthdakota.org/candidates/mike-derby-b76d89).