This race is in the 2026 general election.
In the 2026 South Dakota Senate general election, 2 outside groups spent $780K: $550K opposing Brian Bengs (I) and $230K supporting Mike Rounds (R).
outside money
- opposing Brian Bengs (I)
- $550K
- supporting Mike Rounds (R)
- $230K
Result not in yet
Election day is 3 Nov 2026.
Brian Bengs
IndependentWaiting for the count
Mike Rounds
RepublicanWaiting for the count
Outside money supporting and opposing each candidate
Both sides on one scaleBrian Bengs Independent
$550K$550K opposing Brian Bengs
Mike Rounds Republican
$230K$230K supporting Mike Rounds
The candidates
What each candidate’s own campaign raised, beside what outside groups spent supporting and opposing them.
Brian Bengs
Independent
- Own campaign raised
- $782K
- Outside money opposing
- $550K
Mike Rounds
Republican
- Own campaign raised
- $3.2M
- Outside money supporting
- $230K
- Campaign money to 30 Jun 2026
Week by week
Outside money each week, supporting and opposing the candidates, all candidates combined.
Week of 28 Sep 2026
Supporting $230KOpposing $136K
The groups on each side
The biggest outside groups in this race, by what they spent supporting or opposing each candidate.
Spent supporting a candidate
- American Missionsupporting Mike Rounds$230K
Spent opposing a candidate
- South Dakota Conservative PACopposing Brian Bengs$550K
Who’s connected to whom
The groups that spent supporting or opposing the candidates.
- South Dakota Conservative PAC spent opposing Brian Bengs · $550K
- American Mission spent supporting Mike Rounds · $230K
- Condorcet gave to South Dakota Conservative PAC · $100K
- Custom Management Services gave to South Dakota Conservative PAC · $50,000
- Lonsdale Enterprises (CA) gave to American Mission · $250K
- South Dakota Conservative PAC spent $550K opposing Brian Bengs$550K
- Condorcet gave $100K to South Dakota Conservative PAC$100K
- Custom Management Services gave $50,000 to South Dakota Conservative PAC$50,000
Go deeper
The paperwork behind this race, all of it. Free with an email sign-in.
The paperwork