Federal race · 2020
South Dakota U.S. Senate, 2020
General election: November 3, 2020
Money raised
- Mike Rounds (R)$3.7M raised · $1.7M on hand
- Dan Ahlers (D)$274K raised · $21K on hand
- Scyller Borglum (R)$64K raised · $0 on hand
- Clara M Hart (D)$2K raised · −$676 on hand
Raised Cash on hand · bars are blue for Democrats, red for Republicans, gray for others
Candidates
| Candidate | Status | Raised | Spent | Cash on hand | Through |
|---|---|---|---|---|---|
| Mike Rounds (R) | Won the general election (65.74%) | $3,663,084.50 | $2,492,100.99 | $1,682,521.96 | 2020-12-31 |
| Dan Ahlers (D) | Lost the general election (34.26%) | $273,832.80 | $253,114.09 | $20,718.71 | 2020-12-31 |
| Scyller Borglum (R) | Lost primary | $64,344.72 | $64,344.72 | $0.00 | 2020-11-27 |
| Clara M Hart (D) | Registered with the FEC; has not yet raised or spent $5,000 | $2,292.26 | $2,968.64 | −$676.38 | 2020-11-03 |
Totals from the FEC candidate summary file, retrieved October 23, 2026. A dated snapshot, not live reporting; each candidate’s FEC page is the official source.
Total spent on this race
$2,771,797.29 = candidates’ own spending $2,761,466.66 + outside spending $10,330.63
| Candidate | Outside spending for | Against | Electioneering and member messages |
|---|---|---|---|
| Mike Rounds | $1,698.55 | $7,697.56 | $934.52 |
Candidates’ own spending is their committees’ disbursements less transfers to other committees, contributions to others, loan repayments and refunds (FEC committee summary). Outside spending is independent expenditures, electioneering communications and company or union member communications for or against these candidates (FEC totals by candidate from regular reports, retrieved October 24, 2026; the latest 24- and 48-hour notices are not included yet). Party coordinated spending is not split by race and is not included. All the money
Polling and ratings
Race ratings
Recent polls
| Pollster | Dates | Sample | Margin of error | Results |
|---|---|---|---|---|
| Nielson Brothers Polling | October 24–28, 2020 | 479 (LV) | ± 4.48% | Mike Rounds 56% · Dan Ahlers 39% |
Ratings and polls as listed on Wikipedia: 2020 United States Senate election in South Dakota (retrieved October 23, 2026), licensed CC BY-SA 4.0. TerraCivic does not rate races or compute its own average.
Results
| Candidate | Party | Votes | Share |
|---|---|---|---|
| Mike Rounds | Republican Party | 276,232 | 65.74% |
| Daniel Ahlers | Democratic Party | 143,987 | 34.26% |
As listed on Wikipedia; official results come from the state election office.
TerraCivic shows public filings without scores, grades or judgments about any candidate.
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