Nikki Gronli leads trader consensus at 52.5% in the South Dakota at-large Democratic primary for U.S. House, driven by her superior fundraising—exceeding Scott Schlagel's reported $25,000—and endorsements including former House Majority Leader Billie Sutton, alongside her background as ex-USDA Rural Development State Director and South Dakota Democratic Party vice chair. Billy Mawhiney's February withdrawal from the race, after entering first last August, has consolidated backing for Gronli, dropping his odds to 2%, while Schlagel lingers at 10.5% as a lower-profile former correctional officer who filed early. With the March 31 petition filing deadline approaching for the June 2 primary, the field appears set barring late entrants.
Experimental AI-generated summary referencing Polymarket data · UpdatedSD-AL Democratic Primary Winner
SD-AL Democratic Primary Winner
Scott Schlagel 9%
Billy Mawhiney 2.0%
Nikki Gronli 0
Scott Schlagel
9%
Billy Mawhiney
2%
Nikki Gronli
54%
Scott Schlagel 9%
Billy Mawhiney 2.0%
Nikki Gronli 0
Scott Schlagel
9%
Billy Mawhiney
2%
Nikki Gronli
54%
If no nominee is announced by November 3, 2026, 11:59 PM ET, this market will resolve to "Other".
The resolution source for this market will be a consensus of official Democrat sources, including https://democrats.org/.
Any replacement of the nominee before election day will not change the resolution of the market.
Market Opened: Mar 2, 2026, 7:26 PM ET
Resolver
0x69c47De9D...If no nominee is announced by November 3, 2026, 11:59 PM ET, this market will resolve to "Other".
The resolution source for this market will be a consensus of official Democrat sources, including https://democrats.org/.
Any replacement of the nominee before election day will not change the resolution of the market.
Resolver
0x69c47De9D...Nikki Gronli leads trader consensus at 52.5% in the South Dakota at-large Democratic primary for U.S. House, driven by her superior fundraising—exceeding Scott Schlagel's reported $25,000—and endorsements including former House Majority Leader Billie Sutton, alongside her background as ex-USDA Rural Development State Director and South Dakota Democratic Party vice chair. Billy Mawhiney's February withdrawal from the race, after entering first last August, has consolidated backing for Gronli, dropping his odds to 2%, while Schlagel lingers at 10.5% as a lower-profile former correctional officer who filed early. With the March 31 petition filing deadline approaching for the June 2 primary, the field appears set barring late entrants.
Experimental AI-generated summary referencing Polymarket data · Updated


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