2018Final results
2018 election for South Dakota Secretary of State
Secretary of State · South Dakota
Steve Barnett (R) won with 65.2% of the vote, defeating Alexandra Frederick (D) by 30.4 points.
Steve BarnettRepublican · winner
65.2%210,798
Alexandra FrederickDemocrat
34.8%112,601
323,399 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
The candidates
Also on this ballot here
| Governor | R+3.4 |
| Attorney General | R+10.3 |
| Treasurer | R+24.7 |
| Auditor | R+28.0 |
Results within this state. Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET