Brian Bengs (I)
- Raised
- $782K
- Spent
- $731K
- Cash on hand
- $51K
Campaign reports through June 30, 2026.
South Dakota Senate
Outside groups have reported $1,345,460 in independent spending in this race: $779,611 for the general election and $565,848 in the primaries. The biggest spender so far is South Dakota Conservative PAC, at $704K.
- General election$780K
- Primaries$566K
- Late reports$780K
- Last 14 days$366K
On the November ballot · campaign money and outside spending around each
- Outside spending for
- Outside spending against
Mike Rounds (R)
- Raised
- $4.5M
- Spent
- $3.5M
- Cash on hand
- $2.7M
Campaign reports through June 30, 2026.
Outside spending, general election
Primary and other: $566K for, $0 against.
November ballot as listed by this source on Oct. 1, 2026. Party letters: D Democrat, R Republican, I independent, L Libertarian, G Green.
Not on the November ballot · lost a primary, withdrew or didn’t run, with the money spent around them
Others who filed with the FEC: Julian C Beaudion (D), raised $228,295; Justin S McNeal (R), raised $10,993.
Every outside spender · 3 groups, general-election money first
| Spender | Spent on | General | Primary | Total | Latest |
|---|---|---|---|---|---|
| South Dakota Conservative PACSuper PAC · $550K in late reports | AGAINST Brian Bengs (I)FOR Mike Rounds (R) | $550K | $154K | $704K | Sept. 28, 2026 |
| American MissionSuper PAC · $230K in late reportsAI & data centers | FOR Mike Rounds (R) | $230K | – | $230K | Sept. 23, 2026 |
| Defend American JobsSuper PACCrypto | FOR Mike Rounds (R) | – | $412K | $412K | May 29, 2026 |
Latest filings · newest 17
| Date | Spender | For or against | Election | Amount |
|---|---|---|---|---|
| Sept. 28, 2026Late | South Dakota Conservative PACSd tv ad placements | AGAINST Brian Bengs (I) | General | $99,013 (FEC filing) |
| Sept. 28, 2026Late | South Dakota Conservative PACSd digital ad placement | AGAINST Brian Bengs (I) | General | $36,775 (FEC filing) |
| Sept. 23, 2026Late | American MissionMedia placement / media production | FOR Mike Rounds (R) | General | $229,747 (FEC filing) |
| Sept. 10, 2026Late | South Dakota Conservative PACSd tv placements | AGAINST Brian Bengs (I) | General | $167,776 (FEC filing) |
| Sept. 10, 2026Late | South Dakota Conservative PACSd digital ad placement | AGAINST Brian Bengs (I) | General | $71,300 (FEC filing) |
| Sept. 3, 2026Late | South Dakota Conservative PACSd tv placements | AGAINST Brian Bengs (I) | General | $126,870 (FEC filing) |
| Sept. 3, 2026Late | South Dakota Conservative PACSd digital ad placement | AGAINST Brian Bengs (I) | General | $48,130 (FEC filing) |
| May 29, 2026 | Defend American JobsIe-rounds, mike-media production | FOR Mike Rounds (R) | Primary | $11,416 (FEC filing) |
| May 26, 2026 | Defend American JobsIe-rounds, mike-media buy | FOR Mike Rounds (R) | Primary | $400,332 (FEC filing) |
| May 22, 2026 | South Dakota Conservative PACDigital add placement | FOR Mike Rounds (R) | Primary | $20,000 (FEC filing) |
| May 22, 2026 | South Dakota Conservative PACProduction and design | FOR Mike Rounds (R) | Primary | $500 (FEC filing) |
| April 13, 2026 | South Dakota Conservative PACDigital ad placement | FOR Mike Rounds (R) | Primary | $40,000 (FEC filing) |
| March 9, 2026 | South Dakota Conservative PACAd production | FOR Mike Rounds (R) | Primary | $12,500 (FEC filing) |
| Feb. 26, 2026 | South Dakota Conservative PACDigital ad placement | FOR Mike Rounds (R) | Primary | $20,000 (FEC filing) |
| Feb. 23, 2026 | South Dakota Conservative PACDigital ad placement | FOR Mike Rounds (R) | Primary | $40,000 (FEC filing) |
| Feb. 19, 2026 | South Dakota Conservative PACDigital placement | FOR Mike Rounds (R) | Primary | $20,000 (FEC filing) |
| Feb. 19, 2026 | South Dakota Conservative PACProduction/design | FOR Mike Rounds (R) | Primary | $1,100 (FEC filing) |
About these numbers
- Outside spending is money groups spent on their own ads, mail and canvassing for or against a candidate. Groups can’t coordinate it with campaigns, and it isn’t counted in what campaigns raised or spent.
- Every group that reported independent spending to the FEC is listed, not only the groups on our issue pages. Groups tracked on an issue page carry a tag linking to it.
- Primary, special or general comes from the election the group listed on each expenditure. Seats with a special election this cycle show that money separately.
- Late reports are 24- and 48-hour filings made since a group’s last regular report. Earlier ones are already counted on that report, so we don’t count them twice.
- Some nonprofits don’t have to name their donors, so this shows who spent the money, not always who gave it.
FEC data as of Oct. 5, 2026. Campaign figures cover the full 2026 cycle. Current senators: Sen. John Thune, Sen. Mike Rounds. How this works.