Brian Bengs (I)
- Raised
- $1.9M
- Spent
- $1.8M
- Cash on hand
- $70K
Campaign reports through Oct. 14, 2026.
South Dakota Senate
Through Oct. 30, 2026, outside groups have reported $3,847,990 in independent spending in this race: $3,282,141 for the general election and $565,848 in the primaries. The biggest spender in the general election so far is Retire Career Politicians, at $1.1M.
On the November ballot: Brian Bengs (I) and Mike Rounds (R).
- General election$3.3M
- Primaries$566K
- Late reports$3.3M
- Last 14 days$2.0M
New since the Oct. 31 update
No new outside spending reported.
Results · live from 6 p.m. ET on Nov. 3
On the ballot: Mike Rounds (R), Brian Bengs (I). Vote counts and the call will show here on election night, updated every minute.
Results and race calls from civicAPI (opens in a new tab), from state election offices. Outside money from FEC filings.
Money on each side · SD Senate general election
Brian Bengs (I)
$2.1M 63%
$880K supporting Brian Bengs and $1.2M attacking Mike Rounds
Mike Rounds (R)
$1.2M 37%
$230K supporting Mike Rounds and $985K attacking Brian Bengs
A candidate’s total adds money spent supporting them to money spent attacking their opponent.
3 days until Election Day, Tuesday, Nov. 3.
On the November ballot · campaign money and outside spending around each
- Outside spending for
- Outside spending against
Mike Rounds (R)
- Raised
- $5.1M
- Spent
- $5.5M
- Cash on hand
- $1.3M
Campaign reports through Oct. 14, 2026.
Outside spending, general election
Primary and other: $566K for, $0 against.
November ballot as listed by this source (opens in a new tab) on Oct. 14, 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 $247,596; Justin S McNeal (R), raised $10,993.
Every outside spender · 10 groups, general-election money first
| Spender | Spent on | General | Primary | Total | Latest |
|---|---|---|---|---|---|
| Retire Career PoliticiansHybrid PAC · $1.1M in late reports | FOR Brian Bengs (I)AGAINST Mike Rounds (R) | $1.1M | – | $1.1M | Oct. 26, 2026 |
| South Dakota Conservative PACSuper PAC · $985K in late reports | AGAINST Brian Bengs (I)FOR Mike Rounds (R) | $985K | $154K | $1.1M | Oct. 29, 2026 |
| Freedom From PoliticsSuper PAC · $773K in late reports | AGAINST Mike Rounds (R) | $773K | – | $773K | Oct. 20, 2026 |
| American MissionSuper PAC · $230K in late reportsAI & data centers | FOR Mike Rounds (R) | $230K | – | $230K | Sept. 23, 2026 |
| Great Plains Voices PACHybrid PAC · $100K in late reports | FOR Brian Bengs (I)AGAINST Mike Rounds (R) | $100K | – | $100K | Oct. 26, 2026 |
| Bison PACSuper PAC · $46K in late reports | FOR Brian Bengs (I) | $46K | – | $46K | Oct. 26, 2026 |
| United Independents Campaign FundSuper PAC · $16K in late reports | FOR Brian Bengs (I) | $16K | – | $16K | Oct. 16, 2026 |
| Forward Party Victory FundSuper PAC · $12K in late reports | FOR Brian Bengs (I) | $12K | – | $12K | Oct. 19, 2026 |
| VoteVetsHybrid PAC · $201 in late reports | FOR Brian Bengs (I) | $201 | – | $201 | Oct. 30, 2026 |
| Defend American JobsSuper PACCrypto | FOR Mike Rounds (R) | – | $412K | $412K | May 29, 2026 |
Latest filings · newest 30
Follow new filings in this race by RSS, updated each night.
| Date | Spender | For or against | Election | Amount |
|---|---|---|---|---|
| Oct. 30, 2026Late | VoteVetsDigital communications - estimated cost | FOR Brian Bengs (I) | General | $201 (FEC filing) (opens in a new tab) |
| Oct. 29, 2026Late | South Dakota Conservative PACAd placements | AGAINST Brian Bengs (I) | General | $40,000 (FEC filing) (opens in a new tab) |
| Oct. 29, 2026Late | South Dakota Conservative PACDigital ad placement | AGAINST Brian Bengs (I) | General | $20,000 (FEC filing) (opens in a new tab) |
| Oct. 26, 2026Late | Bison PACAdvertising & media production | FOR Brian Bengs (I) | General | $46,300 (FEC filing) (opens in a new tab) |
| Oct. 26, 2026Late | Retire Career PoliticiansDigital advertising (estimate) | FOR Brian Bengs (I) | General | $40,000 (FEC filing) (opens in a new tab) |
| Oct. 26, 2026Late | Retire Career PoliticiansTv advertising (estimate) | FOR Brian Bengs (I) | General | $35,000 (FEC filing) (opens in a new tab) |
| Oct. 26, 2026Late | Retire Career PoliticiansDigital advertising (estimate) | AGAINST Mike Rounds (R) | General | $20,000 (FEC filing) (opens in a new tab) |
| Oct. 26, 2026Late | Retire Career PoliticiansDigital advertising (estimate) | FOR Brian Bengs (I) | General | $20,000 (FEC filing) (opens in a new tab) |
| Oct. 26, 2026Late | Retire Career PoliticiansTv advertising (estimate) | AGAINST Mike Rounds (R) | General | $17,500 (FEC filing) (opens in a new tab) |
| Oct. 26, 2026Late | Retire Career PoliticiansTv advertising (estimate) | FOR Brian Bengs (I) | General | $17,500 (FEC filing) (opens in a new tab) |
| Oct. 26, 2026Late | Great Plains Voices PACMedia production - estimated | FOR Brian Bengs (I) | General | $5,500 (FEC filing) (opens in a new tab) |
| Oct. 26, 2026Late | Great Plains Voices PACMedia production - estimated | AGAINST Mike Rounds (R) | General | $5,500 (FEC filing) (opens in a new tab) |
| Oct. 24, 2026Late | South Dakota Conservative PACTv ad placement | AGAINST Brian Bengs (I) | General | $90,000 (FEC filing) (opens in a new tab) |
| Oct. 24, 2026Late | South Dakota Conservative PACDigital ad placement | AGAINST Brian Bengs (I) | General | $10,000 (FEC filing) (opens in a new tab) |
| Oct. 23, 2026Late | Great Plains Voices PACMedia buy - estimated | AGAINST Mike Rounds (R) | General | $44,500 (FEC filing) (opens in a new tab) |
| Oct. 23, 2026Late | Great Plains Voices PACMedia buy - estimated | FOR Brian Bengs (I) | General | $44,500 (FEC filing) (opens in a new tab) |
| Oct. 23, 2026Late | South Dakota Conservative PACTv ad placement | AGAINST Brian Bengs (I) | General | $39,085 (FEC filing) (opens in a new tab) |
| Oct. 23, 2026Late | South Dakota Conservative PACDigital ad placement | AGAINST Brian Bengs (I) | General | $10,915 (FEC filing) (opens in a new tab) |
| Oct. 22, 2026Late | South Dakota Conservative PACTv ad placement | AGAINST Brian Bengs (I) | General | $53,250 (FEC filing) (opens in a new tab) |
| Oct. 22, 2026Late | South Dakota Conservative PACDigital ad placement | AGAINST Brian Bengs (I) | General | $11,225 (FEC filing) (opens in a new tab) |
| Oct. 22, 2026Late | Retire Career PoliticiansTv production (estimate) | FOR Brian Bengs (I) | General | $2,481 (FEC filing) (opens in a new tab) |
| Oct. 22, 2026Late | Retire Career PoliticiansTv production (estimate) | FOR Brian Bengs (I) | General | $2,481 (FEC filing) (opens in a new tab) |
| Oct. 21, 2026Late | Retire Career PoliticiansDigital advertising (estimate) | FOR Brian Bengs (I) | General | $74,203 (FEC filing) (opens in a new tab) |
| Oct. 21, 2026Late | Retire Career PoliticiansDigital advertising (estimate) | AGAINST Mike Rounds (R) | General | $74,203 (FEC filing) (opens in a new tab) |
| Oct. 20, 2026Late | Freedom From PoliticsAdvertising | AGAINST Mike Rounds (R) | General | $479,000 (FEC filing) (opens in a new tab) |
| Oct. 20, 2026Late | Retire Career PoliticiansTv advertising (estimate) | AGAINST Mike Rounds (R) | General | $59,850 (FEC filing) (opens in a new tab) |
| Oct. 20, 2026Late | Retire Career PoliticiansTv advertising (estimate) | FOR Brian Bengs (I) | General | $59,850 (FEC filing) (opens in a new tab) |
| Oct. 20, 2026Late | South Dakota Conservative PACTv placements | AGAINST Brian Bengs (I) | General | $54,110 (FEC filing) (opens in a new tab) |
| Oct. 20, 2026Late | South Dakota Conservative PACDigital ad placement | AGAINST Brian Bengs (I) | General | $11,890 (FEC filing) (opens in a new tab) |
| Oct. 20, 2026Late | Retire Career PoliticiansTv production (estimate) | FOR Brian Bengs (I) | General | $10,114 (FEC filing) (opens in a new tab) |
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. The primary scorecard shows how each group’s primary money did.
- 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. 30, 2026. Campaign figures cover the full 2026 cycle. Current senators: Sen. John Thune, Sen. Mike Rounds. How this works.