Democrat
—%
Weighted polling average
Julian Beaudion
DEMOCRATIC
Community Leader
South Dakota 2026 SENATE POLLS
Mike Rounds
REPUBLICAN
US Senate (R-SD)
2015 – Present
2026 South Dakota Senate Polls:
Aggregate of all polls released for South Dakota's Senate election between Democrat Julian Beaudion and Republican Mike Rounds. This page will update the moment new polls are released, including the polling average, projected margin, and survey details.
- Year
- 2026
- Race
- Senate
- State
- South Dakota
- Democratic candidate
- Julian Beaudion
- Republican candidate
- Mike Rounds
- Incumbent / open seat
- Mike Rounds
- Polling average
- 29.1% D / 50.3% R
- Polling average margin
- R +21.2
- Last updated
- 12:00 AM on August 16, 2026
- Polls included
- 3
- Latest poll
- National Republican Senatorial Committee (R) — July 9, 2026
Republican
—%
Weighted polling average
Net margin
—
Polling average difference
Polls Included
—
Number of polls conducted
Pollster
Date
Sample
Mike Rounds*
Julian Beaudion
Margin
Polling Average
—
—
50.3%
29.1%
National Republican Senatorial Committee (R)
July 9, 2026
500 LV
56%
33%
Public Policy Polling (D)
May 30, 2026
726 RV
43%
18%
Public Policy Polling (D)
November 14, 2025
814 RV
52%
30%