South Dakota U.S. Senate
U.S. Senate · South Dakota · Statewide · General election: Tuesday, November 3, 2026
Candidates on the November 3 ballot
- Brian L BengsIndependent
Mike RoundsRepublicanPhoto: U.S. Congress
Source: South Dakota Secretary of State, 2026 General Election Candidate List, certified list (list retrieved 2026-10-30; retrieved 2026-10-30). Withdrawn candidates are excluded. Governor entries list the ticket as printed on the official list. Order of names does not reflect ballot order. Incumbent tags appear only where the official list marks incumbents. Photos come from the Candidate Alerts database where one is on file; otherwise initials are shown.
Federal campaign finance filings for this seat: FEC election page (FEC registration is not the same as ballot qualification).
Certified candidates
- Mike Rounds RepublicanIncumbent @SenatorRounds
- Brian Bengs Independent
Certified candidate list from Candidate Alerts, as of 2026-09-24, based on SD Secretary of State, 2026 General Election Candidate List. Includes candidates the database marks as on the November 3 ballot. Incumbent tags here follow the database.
Past election results
Demographics
2020 Census demographics by district are not yet published in this data set.
0 of 785 precincts are above 50%, and 1 are above 25%. Source: Census American Community Survey 2020-2024 5-year block groups, allocated to current precinct shapes by area. Area coverage is good for 86.5% of precincts; treat the rest as approximate.
Poll status
Map
Statewide race. State outline: U.S. Census Bureau cartographic boundary file (cb_2024_us_state_20m).
County map: past elections and demographics
Choose a layer above. Hover a county for its values.
Precinct-level maps and tables are on the U.S. House district pages.
County results (66 counties)
| County | 2024 President | 2022 Governor | 2020 President | |||
|---|---|---|---|---|---|---|
| Margin | Votes | Margin | Votes | Margin | Votes | |
| Aurora | R+54.1 | 1,393 | R+50.2 | 1,214 | R+52.3 | 1,405 |
| Beadle | R+40.1 | 7,010 | R+37.4 | 5,836 | R+38.1 | 7,081 |
| Bennett | R+26.4 | 1,088 | R+24.5 | 1,025 | R+19.3 | 1,183 |
| Bon Homme | R+51.4 | 2,992 | R+47.2 | 2,562 | R+50.4 | 3,001 |
| Brookings | R+17.4 | 14,939 | R+15.1 | 12,427 | R+13.0 | 14,567 |
| Brown | R+26.8 | 17,043 | R+23.6 | 13,964 | R+23.0 | 17,547 |
| Brule | R+42.4 | 2,423 | R+41.4 | 2,109 | R+43.3 | 2,490 |
| Buffalo | D+27.3 | 466 | D+22.7 | 397 | D+30.8 | 549 |
| Butte | R+60.6 | 5,082 | R+57.0 | 4,186 | R+58.1 | 4,802 |
| Campbell | R+70.1 | 836 | R+70.2 | 667 | R+72.2 | 873 |
| Charles Mix | R+42.9 | 3,615 | R+43.3 | 3,091 | R+36.3 | 3,783 |
| Clark | R+52.5 | 1,842 | R+55.1 | 1,600 | R+50.6 | 1,850 |
| Clay | D+6.5 | 5,657 | D+11.1 | 4,745 | D+11.0 | 5,698 |
| Codington | R+40.8 | 13,510 | R+38.5 | 11,080 | R+38.9 | 13,161 |
| Corson | R+11.9 | 1,143 | R+15.4 | 928 | R+1.9 | 1,283 |
| Custer | R+45.8 | 6,001 | R+46.1 | 5,077 | R+42.4 | 5,494 |
| Davison | R+37.8 | 9,177 | R+37.4 | 7,239 | R+35.1 | 8,454 |
| Day | R+29.9 | 2,932 | R+28.7 | 2,521 | R+27.6 | 2,964 |
| Deuel | R+51.7 | 2,298 | R+51.3 | 1,991 | R+46.4 | 2,350 |
| Dewey | D+12.8 | 1,871 | D+12.7 | 1,574 | D+17.3 | 1,966 |
| Douglas | R+72.4 | 1,658 | R+73.0 | 1,484 | R+73.3 | 1,707 |
| Edmunds | R+60.8 | 2,031 | R+57.3 | 1,701 | R+56.5 | 1,985 |
| Fall River | R+49.3 | 4,274 | R+49.6 | 3,668 | R+45.2 | 4,042 |
| Faulk | R+65.2 | 1,130 | R+63.2 | 955 | R+64.8 | 1,182 |
| Grant | R+45.4 | 3,630 | R+46.6 | 3,215 | R+41.7 | 3,745 |
| Gregory | R+60.2 | 2,267 | R+59.6 | 2,054 | R+58.3 | 2,258 |
| Haakon | R+79.9 | 1,125 | R+82.1 | 987 | R+81.0 | 1,137 |
| Hamlin | R+60.4 | 3,226 | R+57.5 | 2,730 | R+56.0 | 3,083 |
| Hand | R+57.3 | 1,764 | R+59.1 | 1,502 | R+57.7 | 1,836 |
| Hanson | R+59.2 | 2,046 | R+57.0 | 1,632 | R+51.8 | 2,388 |
| Harding | R+86.1 | 820 | R+88.5 | 677 | R+86.0 | 813 |
| Hughes | R+30.1 | 8,435 | R+25.8 | 7,447 | R+29.5 | 8,723 |
| Hutchinson | R+57.9 | 3,736 | R+60.0 | 3,174 | R+57.9 | 3,767 |
| Hyde | R+55.0 | 695 | R+61.6 | 575 | R+60.3 | 710 |
| Jackson | R+35.1 | 1,129 | R+37.3 | 919 | R+34.0 | 1,115 |
| Jerauld | R+43.2 | 999 | R+42.3 | 866 | R+44.8 | 1,006 |
| Jones | R+75.8 | 550 | R+70.1 | 472 | R+68.1 | 599 |
| Kingsbury | R+43.9 | 2,801 | R+43.1 | 2,551 | R+39.0 | 2,779 |
| Lake | R+31.2 | 5,906 | R+28.4 | 4,966 | R+27.5 | 5,873 |
| Lawrence | R+31.3 | 15,409 | R+30.3 | 12,246 | R+30.5 | 13,828 |
| Lincoln | R+26.5 | 36,393 | R+21.7 | 28,161 | R+23.6 | 32,396 |
| Lyman | R+39.5 | 1,447 | R+36.0 | 1,318 | R+32.4 | 1,597 |
| Marshall | R+24.0 | 2,109 | R+20.4 | 1,890 | R+19.7 | 2,178 |
| McCook | R+49.3 | 3,031 | R+48.1 | 2,547 | R+44.8 | 2,900 |
| McPherson | R+69.2 | 1,299 | R+67.6 | 1,100 | R+64.4 | 1,324 |
| Meade | R+50.9 | 14,672 | R+47.1 | 11,870 | R+48.2 | 13,670 |
| Mellette | R+20.1 | 740 | R+27.3 | 630 | R+19.6 | 769 |
| Miner | R+47.0 | 1,167 | R+48.1 | 1,007 | R+41.0 | 1,138 |
| Minnehaha | R+12.7 | 93,986 | R+7.8 | 74,682 | R+9.5 | 92,326 |
| Moody | R+31.9 | 3,189 | R+28.6 | 2,649 | R+24.1 | 3,206 |
| Oglala Lakota | D+70.6 | 3,062 | D+78.7 | 2,480 | D+79.1 | 3,200 |
| Pennington | R+26.4 | 56,580 | R+25.1 | 45,388 | R+25.1 | 57,518 |
| Perkins | R+70.0 | 1,591 | R+70.3 | 1,372 | R+69.6 | 1,669 |
| Potter | R+65.1 | 1,298 | R+64.1 | 1,099 | R+66.1 | 1,380 |
| Roberts | R+23.0 | 4,149 | R+23.8 | 3,565 | R+13.4 | 4,307 |
| Sanborn | R+55.3 | 1,212 | R+52.9 | 1,004 | R+54.7 | 1,185 |
| Spink | R+39.0 | 3,139 | R+40.0 | 2,670 | R+35.0 | 3,163 |
| Stanley | R+46.9 | 1,735 | R+40.9 | 1,447 | R+47.3 | 1,652 |
| Sully | R+60.8 | 901 | R+54.3 | 788 | R+58.2 | 930 |
| Todd | D+50.5 | 2,126 | D+54.1 | 1,926 | D+56.4 | 2,539 |
| Tripp | R+63.3 | 2,654 | R+66.5 | 2,268 | R+61.8 | 2,696 |
| Turner | R+51.3 | 4,538 | R+49.5 | 3,865 | R+47.3 | 4,548 |
| Union | R+40.7 | 8,876 | R+42.7 | 6,740 | R+36.4 | 8,855 |
| Walworth | R+59.2 | 2,466 | R+55.7 | 2,053 | R+54.3 | 2,580 |
| Yankton | R+25.5 | 10,832 | R+21.3 | 8,910 | R+23.5 | 10,900 |
| Ziebach | R+2.8 | 781 | R+6.0 | 683 | D+8.5 | 906 |
2024 President (Kamala D. Harris and Tim Walz vs. Donald J. Trump and JD Vance). Source: South Dakota Secretary of State, 2024 Official Election Returns and Registration Figures (return book), county tables. Official, South Dakota Secretary of State, Official Election Returns (State Canvass).
2022 Governor (Jamie Smith & Jennifer Keintz vs. Kristi Noem & Larry Rhoden). Source: South Dakota Secretary of State, 2022 Official Election Returns and Registration Figures (return book), county tables. Official, South Dakota Secretary of State, Official Election Returns (State Canvass).
2020 President (Joseph R. Biden and Kamala Harris vs. Donald J. Trump and Michael R. Pence). Source: South Dakota Secretary of State, 2020 Official Election Returns and Registration Figures (return book), county tables. Official, South Dakota Secretary of State, Official Election Returns (State Canvass).
County demographics
| County | Population | Voting-age pop. | % White non-Hisp. | % Hispanic | % Black | % Asian | Median income* | % Bachelor's+ | % 18-29 (of adults) | % 65+ | % Homeowners | % Below poverty | % Spanish at home (adults) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statewide | 889,605 | 673,571 | 79.8% | 4.7% | 2.1% | 1.4% | $80k | 32.0% | 20.4% | 18.0% | 68.8% | 11.9% | 2.4% |
| Aurora | 2,653 | 1,976 | 86.3% | 7.0% | 0.6% | 0.2% | $71k | 21.4% | 18.9% | 19.6% | 72.7% | 10.6% | 4.8% |
| Beadle | 18,044 | 12,972 | 68.4% | 14.1% | 1.0% | 9.9% | $70k | 27.0% | 17.2% | 18.7% | 72.6% | 13.7% | 8.6% |
| Bennett | 3,350 | 2,173 | 34.4% | 5.1% | 0.2% | 1.5% | $60k | 18.4% | 27.0% | 15.3% | 61.2% | 29.9% | 0.1% |
| Bon Homme | 6,984 | 5,684 | 86.2% | 2.3% | 2.3% | 0.1% | $64k | 19.6% | 17.4% | 21.5% | 80.5% | 10.6% | 1.8% |
| Brookings | 34,038 | 26,750 | 87.5% | 4.6% | 1.0% | 3.2% | $80k | 42.4% | 39.1% | 13.6% | 57.6% | 13.0% | 2.9% |
| Brown | 37,578 | 28,494 | 84.6% | 4.6% | 1.3% | 3.0% | $75k | 33.9% | 21.0% | 17.5% | 68.5% | 11.4% | 2.9% |
| Brule | 5,330 | 4,050 | 81.1% | 2.4% | 0.6% | 0.0% | $76k | 28.7% | 17.4% | 21.4% | 75.7% | 10.9% | 1.5% |
| Buffalo | 1,806 | 1,099 | 17.5% | 1.7% | 0.0% | 0.0% | $45k | 9.9% | 32.3% | 9.2% | 52.5% | 34.0% | 0.0% |
| Butte | 10,344 | 7,746 | 88.1% | 4.2% | 0.0% | 0.5% | $75k | 20.0% | 16.3% | 20.2% | 76.7% | 8.7% | 1.5% |
| Campbell | 1,585 | 1,255 | 88.5% | 7.8% | 0.0% | 0.1% | $73k | 36.0% | 5.2% | 26.9% | 76.2% | 7.7% | 4.4% |
| Charles Mix | 9,308 | 6,456 | 63.6% | 2.9% | 0.2% | 0.6% | $65k | 25.6% | 19.1% | 19.0% | 72.1% | 24.1% | 0.5% |
| Clark | 3,893 | 2,746 | 90.8% | 5.3% | 0.5% | 0.7% | $72k | 19.8% | 14.0% | 23.5% | 77.6% | 10.9% | 2.5% |
| Clay | 15,305 | 12,684 | 83.9% | 3.3% | 1.9% | 3.1% | $63k | 45.3% | 49.6% | 11.9% | 50.7% | 19.8% | 1.0% |
| Codington | 27,301 | 21,014 | 90.5% | 3.2% | 0.7% | 0.6% | $78k | 21.5% | 19.2% | 19.6% | 69.9% | 8.7% | 1.7% |
| Corson | 3,873 | 2,512 | 30.7% | 0.5% | 0.0% | 0.0% | $50k | 19.4% | 22.4% | 13.4% | 59.6% | 43.8% | 0.4% |
| Custer | 8,865 | 7,644 | 87.7% | 3.1% | 0.3% | 0.4% | $85k | 31.6% | 8.1% | 33.7% | 85.5% | 9.0% | 1.5% |
| Davison | 18,610 | 14,199 | 88.7% | 4.8% | 0.7% | 0.4% | $68k | 22.9% | 19.0% | 20.9% | 61.1% | 11.1% | 2.7% |
| Day | 5,431 | 4,215 | 83.0% | 2.8% | 0.0% | 0.1% | $71k | 22.0% | 13.6% | 26.7% | 74.6% | 14.8% | 1.3% |
| Deuel | 4,317 | 3,271 | 93.8% | 3.2% | 0.5% | 0.1% | $83k | 25.0% | 16.6% | 22.1% | 82.8% | 8.7% | 1.4% |
| Dewey | 5,189 | 3,200 | 21.1% | 1.0% | 0.5% | 0.1% | $53k | 18.8% | 23.9% | 10.0% | 61.3% | 33.0% | 0.3% |
| Douglas | 2,916 | 2,176 | 91.6% | 3.2% | 0.7% | 0.0% | $88k | 25.1% | 14.9% | 24.5% | 76.7% | 11.1% | 2.4% |
| Edmunds | 4,036 | 3,083 | 93.8% | 2.7% | 0.0% | 0.7% | $81k | 28.3% | 14.2% | 22.9% | 81.1% | 9.9% | 1.5% |
| Fall River | 7,228 | 6,054 | 83.9% | 3.4% | 0.0% | 1.9% | $69k | 29.4% | 10.4% | 32.8% | 72.4% | 16.5% | 1.9% |
| Faulk | 2,126 | 1,595 | 95.1% | 1.3% | 0.0% | 0.2% | $59k | 22.6% | 15.4% | 24.1% | 79.6% | 28.3% | 0.4% |
| Grant | 7,597 | 5,925 | 89.2% | 7.5% | 0.4% | 0.8% | $73k | 25.5% | 16.5% | 23.5% | 75.7% | 11.8% | 5.1% |
| Gregory | 4,020 | 3,039 | 86.2% | 0.6% | 0.9% | 1.1% | $63k | 22.2% | 13.6% | 26.6% | 76.7% | 9.6% | 0.2% |
| Haakon | 1,721 | 1,371 | 89.9% | 0.1% | 1.3% | 0.0% | $69k | 21.5% | 19.0% | 29.1% | 79.1% | 7.8% | 0.2% |
| Hamlin | 6,359 | 4,252 | 91.2% | 5.9% | 0.1% | 0.3% | $85k | 24.5% | 22.5% | 14.3% | 82.0% | 6.9% | 4.7% |
| Hand | 3,128 | 2,337 | 92.2% | 2.1% | 0.5% | 0.1% | $75k | 28.4% | 15.9% | 24.2% | 65.5% | 5.1% | 0.9% |
| Hanson | 3,493 | 2,490 | 91.8% | 1.4% | 0.3% | 0.0% | $83k | 22.5% | 16.8% | 16.3% | 89.3% | 7.1% | 1.0% |
| Harding | 1,147 | 879 | 91.2% | 1.4% | 1.5% | 0.0% | $80k | 30.4% | 12.6% | 20.7% | 76.5% | 6.3% | 0.3% |
| Hughes | 16,688 | 12,563 | 80.1% | 3.3% | 0.1% | 0.7% | $91k | 40.0% | 16.2% | 18.0% | 72.3% | 8.8% | 1.6% |
| Hutchinson | 7,405 | 5,447 | 90.8% | 2.7% | 0.1% | 0.3% | $78k | 28.7% | 14.6% | 21.8% | 77.3% | 12.2% | 2.0% |
| Hyde | 1,182 | 970 | 85.9% | 1.6% | 0.3% | 0.0% | $73k | 20.3% | 10.6% | 28.3% | 83.4% | 5.8% | 0.0% |
| Jackson | 2,800 | 1,877 | 36.6% | 0.4% | 0.0% | 0.0% | $41k | 12.4% | 16.9% | 12.4% | 67.3% | 42.4% | 0.1% |
| Jerauld | 1,753 | 1,353 | 89.4% | 7.1% | 0.0% | 0.0% | $77k | 21.3% | 10.4% | 30.6% | 84.2% | 8.3% | 3.0% |
| Jones | 1,006 | 686 | 80.0% | 1.0% | 0.0% | 0.0% | $65k | 27.3% | 13.9% | 24.4% | 76.3% | 18.4% | 0.0% |
| Kingsbury | 5,233 | 3,919 | 91.3% | 2.9% | 0.0% | 0.4% | $73k | 23.1% | 15.8% | 23.1% | 82.1% | 10.6% | 1.1% |
| Lake | 11,021 | 8,870 | 88.9% | 5.2% | 0.7% | 0.7% | $78k | 34.5% | 20.2% | 24.4% | 73.5% | 8.4% | 3.3% |
| Lawrence | 27,083 | 22,660 | 88.9% | 3.8% | 0.3% | 0.5% | $74k | 33.2% | 19.4% | 24.7% | 65.5% | 11.4% | 2.1% |
| Lincoln | 70,503 | 51,781 | 89.0% | 3.1% | 2.3% | 1.7% | $105k | 44.5% | 20.1% | 14.7% | 71.0% | 5.5% | 1.3% |
| Lyman | 3,721 | 2,679 | 57.2% | 1.2% | 0.0% | 0.0% | $71k | 24.5% | 19.8% | 18.3% | 70.0% | 23.6% | 0.5% |
| Marshall | 4,309 | 3,260 | 83.6% | 6.4% | 0.1% | 0.2% | $80k | 25.4% | 16.1% | 23.3% | 80.3% | 6.1% | 3.3% |
| McCook | 5,760 | 4,121 | 92.6% | 3.6% | 0.3% | 0.0% | $83k | 29.9% | 16.5% | 18.8% | 79.5% | 6.8% | 1.8% |
| McPherson | 2,153 | 1,739 | 96.8% | 0.1% | 0.0% | 0.0% | $68k | 26.4% | 17.4% | 33.2% | 81.3% | 12.9% | 0.3% |
| Meade | 30,359 | 23,906 | 85.0% | 4.9% | 1.7% | 0.7% | $81k | 27.7% | 22.3% | 16.6% | 73.2% | 7.0% | 1.9% |
| Mellette | 1,939 | 1,383 | 34.8% | 0.9% | 0.0% | 0.0% | $45k | 19.2% | 18.0% | 16.4% | 60.4% | 41.7% | 0.0% |
| Miner | 2,273 | 1,774 | 96.0% | 1.3% | 0.7% | 0.2% | $81k | 16.7% | 13.7% | 25.9% | 84.8% | 11.2% | 0.8% |
| Minnehaha | 192,376 | 143,420 | 78.6% | 6.6% | 6.4% | 1.5% | $84k | 35.2% | 21.0% | 13.8% | 63.3% | 8.6% | 4.2% |
| Moody | 6,560 | 4,819 | 73.8% | 6.0% | 0.2% | 1.7% | $77k | 30.6% | 16.4% | 20.2% | 73.3% | 11.8% | 3.6% |
| Oglala Lakota | 13,439 | 8,682 | 7.0% | 1.9% | 0.1% | 0.0% | $53k | 11.8% | 29.2% | 7.5% | 51.4% | 57.6% | 0.6% |
| Pennington | 114,575 | 89,292 | 78.1% | 5.6% | 1.1% | 1.3% | $79k | 34.9% | 18.5% | 20.2% | 70.1% | 10.9% | 1.5% |
| Perkins | 2,989 | 2,321 | 92.0% | 1.1% | 0.0% | 0.7% | $74k | 24.9% | 15.6% | 26.9% | 78.4% | 13.7% | 0.0% |
| Potter | 2,421 | 1,927 | 93.2% | 0.0% | 1.6% | 0.6% | $70k | 27.2% | 15.8% | 30.7% | 81.5% | 6.2% | 0.5% |
| Roberts | 10,324 | 7,404 | 56.3% | 2.8% | 0.3% | 0.8% | $67k | 18.6% | 18.4% | 20.9% | 71.0% | 15.7% | 0.8% |
| Sanborn | 2,414 | 1,788 | 90.2% | 5.1% | 0.0% | 0.0% | $81k | 21.2% | 15.8% | 20.2% | 78.7% | 8.5% | 2.8% |
| Spink | 6,178 | 4,867 | 92.6% | 2.8% | 1.6% | 0.0% | $72k | 28.3% | 14.9% | 24.5% | 73.1% | 10.0% | 1.2% |
| Stanley | 3,234 | 2,544 | 86.8% | 2.2% | 0.0% | 0.0% | $87k | 28.2% | 13.2% | 23.6% | 80.2% | 6.2% | 0.7% |
| Sully | 1,578 | 1,227 | 86.7% | 0.0% | 4.4% | 0.0% | $73k | 24.2% | 14.5% | 23.1% | 73.1% | 6.3% | 0.8% |
| Todd | 9,234 | 5,655 | 8.1% | 2.4% | 0.4% | 3.1% | $43k | 16.5% | 27.8% | 7.9% | 46.3% | 48.4% | 0.1% |
| Tripp | 5,633 | 4,327 | 79.9% | 1.9% | 0.8% | 0.4% | $59k | 17.7% | 14.9% | 24.6% | 68.4% | 18.5% | 1.2% |
| Turner | 8,865 | 6,622 | 93.0% | 3.5% | 0.4% | 0.3% | $77k | 27.3% | 15.6% | 20.3% | 78.9% | 9.3% | 1.9% |
| Union | 16,388 | 12,450 | 88.4% | 4.7% | 1.0% | 1.1% | $94k | 36.3% | 15.8% | 19.5% | 73.3% | 6.3% | 1.8% |
| Walworth | 5,097 | 3,889 | 78.5% | 0.6% | 0.4% | 0.6% | $65k | 29.5% | 11.4% | 23.1% | 76.5% | 14.7% | 0.1% |
| Yankton | 23,131 | 18,213 | 87.0% | 5.8% | 1.6% | 0.3% | $78k | 31.4% | 17.9% | 21.4% | 72.7% | 11.9% | 3.5% |
| Ziebach | 2,406 | 1,796 | 26.9% | 1.5% | 0.0% | 0.0% | $50k | 15.3% | 25.5% | 11.7% | 57.4% | 33.3% | 0.1% |
Demographics are Census American Community Survey (ACS) 2020-2024 5-year estimates for block groups, summed to counties. They describe the resident population, not registered or likely voters, and include non-citizens. ACS margins of error are not shown; small counties carry large error. Median income is a household-weighted average of block-group medians, an approximation.
Nonpartisan voter information. GOTV Polling does not endorse any candidate.