Sonja Mentzer and Brian Mulder won the 2 seats for House of Representatives, District 11 (two seats) in the November 3, 2026 election, according to unofficial results from South Dakota Secretary of State.
Keri Weems finished next with 4,061 votes, 129 behind Brian Mulder. That is close enough that the certified count could still differ.
The election office reported 671 of 671 precincts reporting. In all, 14,039 votes were counted in this race. Keri Weems, the incumbent, did not win.
Full results
| Candidate | Party | Votes | Share |
|---|---|---|---|
| Sonja Mentzer (won) | Democratic | 4,234 | 30.2% |
| Brian Mulder (won) | Republican | 4,190 | 29.8% |
| Keri Weems | Republican | 4,061 | 28.9% |
| Tracey Quint | Libertarian | 1,554 | 11.1% |
What the job involves
Members of the state legislature write and vote on state laws and the state budget, including school funding and the rules cities and counties work under.
What Sonja Mentzer said during the campaign
- Public education: She says she will support educators by helping provide resources to hire and retain quality teachers and support successful classrooms. (Sonja Mentzer for SD — Vision for South Dakota)
- Healthcare access: She supports accessible, quality healthcare for all South Dakotans. (Sonja Mentzer for SD — Vision for South Dakota)
- Community priorities: She says she will support Native people and land, protect voting rights, and expand economic and workforce development. (Sonja Mentzer for SD — Vision for South Dakota)
What Brian Mulder said during the campaign
- District priorities: His campaign identifies low taxes, families, education, and jobs as District 11 priorities. (Mulder For District 11)
- Education and budget: He says he wants to balance the budget, enhance education, and protect families. (Mulder For District 11)
What happens next
These results are unofficial. They become final when election officials certify them at the canvass, and totals can still change a little as remaining mailed and provisional ballots are counted.
Every race in Sioux Falls is on our election results page. More about Sonja Mentzer is on their candidate page.
