SENATE
South Dakota Senate2026
RACE AT A GLANCE
RACE TYPE
Incumbent running
Mike Rounds (R)
COOK PARTISAN VOTING INDEX
Last updated : Apr 27, 2026D +50
R +50
R +15
Race summary
Despite buzz that Sen. Mike Rounds may try to get his old job as governor back now that Kristi Noem is at the Department of Homeland Security, Rounds ultimately decided to run for Senate and won comfortably.Key Dates
Filing Deadline: Mar 31, 2026
Primary Election: Jun 2, 2026
INCUMBENT
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INCUMBENT
Full Bio:
ROUNDS, Marion Michael (Mike), a Senator from South Dakota; born in Huron, Beadle County, S. Dak.,
October 24, 1954; B.S., South Dakota State University, 1977; insurance and real
estate executive; member of the South Dakota state senate 1991-2000, serving as
majority leader 1995-2000; governor of South Dakota 2003-2011; elected as a
Republican to the United States Senate in 2014 for the term ending January 3,
2021.
Source: Bioguide
CANDIDATES
Independents / Other Parties
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STATE DATA
South Dakota
Population Breakdown
Source: United States Census
Past Presidential Results from this State
2024 Election Results
Source: The Cook Political Report
2020 Election Results
Source: The Cook Political Report
RACE ANALYSIS
Race Analysis
Updated: Feb 11, 2025
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