In the most recent South Dakota Senate race poll (Concord Public Opinion Partners, Oct 22 - 26, 2026, n=448 LV), Bengs (I) leads Rounds (Mike) (R) 43%–41%.
Data is synced continuously from the New York Times, which aggregates surveys from major pollsters. The table shows individual pollster results. The map uses the same 2026 non-partisan polling average and candidate-selection method as the homepage maps.
At a glance
- Polls tracked
- 16
- Pollsters
- 9
- Field dates
- Jul 31, 2025 – Oct 26, 2026
- Stages
- General election (15), Primary (1)
- Most recent poll
- Oct 26, 2026
All polls
| Pollster | Partisan | Field dates | Stage | Sample | Results | Margin | Source |
|---|---|---|---|---|---|---|---|
| Concord Public Opinion Partners | Dem | Oct 22 - 26, 2026 | General election | n=448 LV | Bengs (I): 43% Rounds (Mike) (R): 41% Someone else: 9% | I+2% | link |
| Emerson College | Oct 19 - 21, 2026 | General election | n=803 LV | Rounds (Mike) (R): 54% Bengs (I): 46% | R+8% | link | |
| Quantus Insights | Oct 17 - 19, 2026 | General election | n=657 LV | Rounds (Mike) (R): 59.4% Bengs (I): 37.3% Someone else: 1.7% | R+22.1% | link | |
| Public Opinion Strategies | Rep | Oct 12 - 16, 2026 | General election | n=500 LV | Rounds (Mike) (R): 54% Bengs (I): 37% | R+17% | link |
| Mason-Dixon Polling & Research, Inc. | Oct 12 - 14, 2026 | General election | n=500 LV | Rounds (Mike) (R): 56.4% Bengs (I): 37.4% Don't know: 6.2% | R+19% | link | |
| Concord Public Opinion Partners | Dem | Oct 6 - 8, 2026 | General election | n=400 LV | Bengs (I): 43% Rounds (Mike) (R): 42% Don't know: 10% | I+1% | link |
| Zenith Research | Ind | Sep 24 - 27, 2026 | General election | n=500 LV | Rounds (Mike) (R): 53% Bengs (I): 47% | R+6% | link |
| Public Policy Polling | Ind | Sep 8 - 9, 2026 | General election | n=629 RV | Rounds (Mike) (R): 45% Bengs (I): 42% Don't know: 13% | R+3% | link |
| Lake Research Partners | Dem | Aug 26 - 30, 2026 | General election | n=500 LV | Bengs (I): 51% Rounds (Mike) (R): 41% Don't know: 4% | I+10% | link |
| Impact Research | Ind | Aug 13 - 17, 2026 | General election | n=500 LV | Rounds (Mike) (R): 44% Bengs (I): 44% Don't know: 12% | TIE | link |
| Public Opinion Strategies | Rep | Jul 6 - 9, 2026 | General election | n=500 LV | Rounds (Mike) (R): 56% Bengs (I): 33% | R+23% | link |
| Public Policy Polling | Ind | May 29 - 30, 2026 | General election | n=726 RV | Rounds (Mike) (R): 43% Bengs (I): 23% Beaudion (D): 18% | R+20% | link |
| Mason-Dixon Polling & Research, Inc. | Apr 7 - 11, 2026 | Primary | n=500 RV | Rounds (Mike) (R): 66% McNeal (R): 18% Don't know: 16% | +48% | link | |
| Public Policy Polling | Ind | Feb 17 - 18, 2026 | General election | n=685 RV | Rounds (Mike) (R): 49% Beaudion (D): 32% Don't know: 19% | R+17% | link |
| Public Policy Polling | Ind | Nov 13 - 14, 2025 | General election | n=814 RV | Rounds (Mike) (R): 44% Bengs (I): 31% Don't know: 25% | R+13% | link |
| Public Policy Polling | Ind | Jul 30 - 31, 2025 | General election | n=552 RV | Rounds (Mike) (R): 41% Don't know: 31% Bengs (I): 28% | R+13% | link |
16 of 16 polls shown, most recent first. Every number is a single pollster's reported result — no polling average is calculated here. Partisan shows the source’s party flag; a blank means no partisan affiliation is marked.