SD-01 House race 2026
Our 21-day average puts Marty Jackley at 60%, James Bialota at 12%, Nikki Gronli at 32%, based on 4 polls ending between 3/9/2026 and 10/14/2026. Dots on the chart are individual polls; the line is the rolling average. How to read these numbers.
SD-01 House race 2026 over time
4 polls · 21-day rolling average · dots are individual polls
Marty Jackley 60%
James Bialota 12%
Nikki Gronli 32%
View data as table
| Choice | Latest average | Polls | Latest poll |
|---|---|---|---|
| Marty Jackley | 60% | 4 | 10/14/2026 |
| James Bialota | 12% | 2 | 4/11/2026 |
| Nikki Gronli | 32% | 2 | 10/14/2026 |
Average result
Unweighted mean across 4 matching polls
View data as table
| Choice | % |
|---|---|
| Marty Jackley | 56.6% |
| Nikki Gronli | 37.5% |
| James Bialota | 9.6% |
Individual polls (4)
| End date | Pollster | Sample | Results |
|---|---|---|---|
| 10/14/2026 |
Mason-Dixon
for South Dakota News Watch, Chiesman Center for Democracy at the University of South Dakota |
500 LV |
Marty Jackley (R)
Nikki Gronli (D)
|
| 8/30/2026 | Lake Research Partners | 500 LV |
Marty Jackley (R)
Nikki Gronli (D)
|
| 4/11/2026 |
Mason-Dixon Polling & Research, Inc.
for Chiesman Center for Democracy at the University of South Dakota | South Dakota News Watch |
500 RV |
Marty Jackley (R)
James Bialota (R)
|
| 3/9/2026 |
Emerson College
for KELO-TV | Nexstar |
415 LV |
Marty Jackley (R)
James Bialota (R)
|