USRaces / Senate
South Dakota Senate race 2026: polls
Last updated: 20 Oct 2026
Leading in average
Mike Rounds
55.0%
Second
Brian Bengs
38.7%
Margin
+16.3
points, average of 3 pollsters
Latest poll
20 Oct 2026
Emerson College
Polling average
Latest poll from each pollster (3 pollsters)
Average of the most recent poll per pollster. Polls differ in population (likely voters, registered voters, adults); see details below. Source: VoteHub (CC BY 4.0).
All polls
3 polls in the database
| Pollster | Date | Details | Mike Rounds | Brian Bengs |
|---|---|---|---|---|
| Emerson College | 20 Oct 2026 | n=803 · LV · Oct 19–Oct 20 | 50.0 | 42.0 |
| Quantus Insights | 19 Oct 2026 | n=657 · LV · Oct 17–Oct 19 | 59.0 | 37.0 |
| Mason-Dixon | 14 Oct 2026 | n=500 · LV · Oct 12–Oct 14 | 56.0 | 37.0 |
