All Senate races
South Dakota Senate
Safe RSouth Dakota · Current: Mike Rounds
Republican · Incumbent
Mike Rounds
Marion Michael Rounds is an American businessman and politician serving as the junior United States senator from South Dakota since 2015. A member of the Republican Party, he served as the 31st governor of South Dakota from 2003 to 2011. Wikipedia
Raised $3.2M · Spent $2.3M · Cash $2.7M (2026 cycle) · FEC
Poll average
50.3%46.1%
Weighted by recency (14-day half-life), sample size, population and pollster quality. 9 polls.
Polls over time
Individual polls
- 2026-09-27 · 500 LVR 53%I 47%R +6
- 2026-09-09 · 629 RVR 45%I 42%R +3
- 2026-08-30 · 500 LVR 44%I 51%I +7
- 2026-08-17 · 500 LVR 44%I 44%Even
- 2026-07-09 · 500 LVR 56%I 33%R +23
- 2026-05-30 · 726 RVR 44%I 40%R +4
- 2026-02-18 · 685 RVR 47%I 35%R +12
- 2025-11-14 · 814 RVR 44%I 31%R +13
- 2025-07-31 · 524 LVR 41%I 28%R +13
| Pollster | Date | Sample | Dem | Rep | Ind | Lead |
|---|---|---|---|---|---|---|
| Zenith ResearchC | 2026-09-27 | 500 LV | – | 53% | 47% | R +6 |
| Public Policy Polling(D)B | 2026-09-09 | 629 RV | – | 45% | 42% | R +3 |
| Lake Research Partners(D)C | 2026-08-30 | 500 LV | – | 44% | 51% | I +7 |
| Impact Research(D)C | 2026-08-17 | 500 LV | – | 44% | 44% | Even |
| Public Opinion Strategies(R)C | 2026-07-09 | 500 LV | – | 56% | 33% | R +23 |
| Public Policy Polling(D)B | 2026-05-30 | 726 RV | – | 44% | 40% | R +4 |
| Public Policy Polling(D)B | 2026-02-18 | 685 RV | – | 47% | 35% | R +12 |
| Public Policy Polling(D)B | 2025-11-14 | 814 RV | – | 44% | 31% | R +13 |
| Public Policy Polling(D)B | 2025-07-31 | 524 LV | – | 41% | 28% | R +13 |
Race ratings
- Cook Political ReportSafe R
- Decision Desk HQSafe R
- The EconomistLikely R
- FPOSafe R
- Fox NewsSafe R
- Inside ElectionsSafe R
- RealClearPoliticsSafe R
- Sabato's Crystal BallSafe R
- Silver BulletinSafe R
- Split TicketLikely R
Polls and ratings compiled from Wikipedia (CC BY-SA).