South Dakota Senate polls
Democrat (D) vs Mike Rounds (R). The polls the model aggregates, each with its weight and source, then every public poll on file. The forecast itself lives on the race page.
Adjusted aggregateR+6.4same figure as the race page
Polls77 recorded polls · 7 eligible for the aggregate · 7 with positive weight
Latest field dateSep 9Eligible polls: latest poll: 2026-09-09 (4 days old)
EditionSep 13weights and corrections as of this edition
The polls the model reads
hover, tap or Tab to any poll- counted poll · area is its model weight
- weight exactly zero · shown, not counted
- poll trend · smoothed across nearby polls, larger and non-partisan ones count more · the recent end firms up as polls arrive
- published average
- 30 days before this edition
Every poll on file · 7
newest first7 in the aggregate · 0 shown, not counted
| Pollster | Fielded | Added | Sample | Result | Weight | Source |
|---|---|---|---|---|---|---|
| ●Public Policy PollingGeneral · IND sponsor · IND partisan | 629 RV | Mike Rounds 45Brian Bengs 42Don't know 13 | 2d ago | 0.315 | Pollster post | |
| ●Impact ResearchGeneral · IND sponsor · IND partisan | 500 LV | Mike Rounds 44Brian Bengs 44Don't know 12 | 0.089 | Poll document | ||
| ●Public Opinion StrategiesGeneral · REP sponsor · REP partisan | 500 LV | Mike Rounds 56Brian Bengs 33 | 0.057 | Poll release | ||
| ●Public Policy PollingGeneral · IND sponsor · IND partisan | 726 RV | Mike Rounds 43Brian Bengs 23Julian Beaudion 18Don't know 16+2 other releases | 0.012 | Poll release | ||
| ●Public Policy PollingGeneral · IND sponsor · IND partisan | 685 RV | Mike Rounds 49Julian Beaudion 32Don't know 19+1 other release | 0.000 | Poll release | ||
| ●Public Policy PollingGeneral · IND sponsor · IND partisan | 814 RV | Mike Rounds 44Brian Bengs 31Don't know 25+1 other release | 0.000 | Poll release | ||
| ●Public Policy PollingGeneral · IND sponsor · IND partisan | 552 RV | Mike Rounds 41Don't know 31Brian Bengs 28 | 0 · not counted | Pollster post |
Archive source date 2026-09-13. Archive records may be newer than the sealed forecast; inclusion here does not mean the forecast uses them.
Model rows carry what the source record provides: pollster, field dates, sample size and D/R shares where published. Archive rows come from the broad public harvest. Poll data via VoteHub, used under CC BY 4.0. Poll data from The New York Times, used under CC BY 4.0.