Mike Rounds
SDWhat the Signal reads
Likely R
Rounds is the Republican incumbent, defending a seat the Signal rates Likely R. The market has Rounds at 94¢ against Bengs's 7¢, down 2.3¢ since July 31. The polling average has Rounds ahead by 5 points, and Rounds leads 4 to 1 in money raised.
The market
Rounds · Republican contract
94.0¢
▼ 2.3¢since July 31
This contract settles on whether a Republican holds the seat, not on Mike Rounds by name.
248,270 traded · 180,266 open. Prices are the yes ask; sides may not sum to 100.Checked 2:09 PM ET
Rounds v Bengs
Metric by metricThe 2026 race
South Dakota U.S. SenatePolling average
Rounds +5
Average of 3 pollsters, August 17 to September 27.
Prior result
R+31.5
2020 general election, won by Mike Rounds.
Fundraising
4 to 1
Raised 2025 to 2026, through June 30.