Polls · South Dakota Senate
Concord Public Opinion Partners , 8 October 2026
Concord Public Opinion Partners has Brian Bengs ahead of Mike Rounds by 1 points in South Dakota Senate, 43% to 42%. It is this pollster's first poll of this race in our data.
| Race | South Dakota Senate |
|---|---|
| Fieldwork | 6 October 2026 – 8 October 2026 |
| Stage | General election |
| Sample | 400 (likely voters) |
| Pollster's lean | Mostly works for Democrats |
| Method | – |
| Release | release |
| In our average | Yes |
Main
| Brian Bengs I | 43 | |
 Mike Rounds R |
42 | |
| Undecided | 10 | |
| Other | 5 |
Margin on the decided vote: D+1.1; after our adjustments R+2.0, which includes a move of 0.3 points to the Democrats with the national trend since the poll (↻).
Photo credits
1 official portrait from the Biographical Directory of the United States Congress (US government work, public domain): Mike Rounds.