The Ballot Brief
South Dakota
Candidate profile

Catherine Barranco

R · South Dakota · 2026

On the ballot

AuditorSouth Dakota · 2026

Top priorities

  • Apply economics and SEC fraud-investigation experience to state audits
  • Scrutinize budgets, projections, and financial reports
  • Push government-efficiency reviews of state spending

Per the campaign site.

Biography

Catherine Barranco is a Sioux Falls economist who formerly investigated financial fraud at the U.S. Securities and Exchange Commission and the Republican nominee for state auditor, winning 53% of delegates on the first round at the June 27 state convention. She holds bachelor's and master's degrees in economics, is a small-business owner and past president of the South Dakota Federation of Republican Women, and is endorsed by term-limited incumbent Rich Sattgast. She entered the race after her husband, Sioux Falls City Councilor David Barranco, stepped away from his campaign following a cancer diagnosis, per The Dakota Scout.

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Profile facts follow official election office filings and the sources cited in each biography. Official sources are the final word on who appears on your ballot.

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