South Dakota Senate 2026 polling average as of Oct 19, 2026, based on 9 published polls from Apr 22, 2026 to Sep 27, 2026. Election Day is Tuesday, Nov. 3, 2026.
If the 2026 South Dakota U.S. Senate election were held today, who would you vote for?
| Poll ended | Pollster | Sample | Result |
|---|---|---|---|
| Sep 27, 2026 | Zenith Research | 500 likely voters | Bengs 47%, Rounds 53% |
| Sep 9, 2026 | Public Policy Polling | 629 registered voters | Bengs 42%, Rounds 45% |
| Aug 30, 2026 | Lake Research Partners (D) | 500 likely voters | Bengs 51%, Rounds 41% |
| Aug 17, 2026 | Impact Research | 500 likely voters | Bengs 44%, Rounds 44% |
| Jul 9, 2026 | Public Opinion Strategies for National Republican Senatorial Committee (R) | 500 likely voters | Bengs 33%, Rounds 56% |
| May 30, 2026 | Public Policy Polling | 726 registered voters | Bengs 40%, Rounds 44% |
| Feb 18, 2026 | Public Policy Polling | 685 registered voters | Bengs 35%, Rounds 47% |
| Nov 14, 2025 | Public Policy Polling | 814 registered voters | Bengs 31%, Rounds 44% |
| Jul 31, 2025 | Public Policy Polling | 552 registered voters | Bengs 28%, Rounds 41% |
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Polls compiled by The New York Times, used under CC BY 4.0. Averages calculated by People’s Poll (Methods). Updated Oct 19, 2026. Published by Onward Media LLC.