The Ballot Brief
South Dakota
Candidate profile

Mike Derby

Republican · South Dakota · 2026 · Incumbent

On the ballot

South Dakota House District 34South Dakota · 2026Pennington County sample ballot
Biography

Mike Derby is a commercial real estate broker associate whose current District 34 term began in 2021, per South Dakota Public Broadcasting. Derby chairs the House Appropriations Committee and has served as a board member for Visit Rapid City, the Elevate Rapid City Diplomat Committee, and the Rapid City Area Chamber of Commerce, per Derby's campaign site.

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How we source this

Profile facts follow official election office filings and the sources cited in each biography. Roster last verified September 25, 2026. Official sources are the final word on who appears on your ballot.

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