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The 2020 United States Senate election in South Dakota was held on November 3, 2020, to elect a member of the United States Senate to represent the State of South Dakota, concurrently with the 2020 U.S. presidential election, as well as other elections to the United States Senate, elections to the United States House of Representatives and various state and local elections. Incumbent Republican Senator Mike Rounds was reelected to a second term in office, overperforming Donald Trump in the concurrent presidential election by 4.93 points.
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Rounds: 50–60% 60–70% 70–80% 80–90% >90% Ahlers: 50–60% 60–70% 70–80% 80–90% >90% | |||||||||||||||||
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Party | Candidate | Votes | % | |
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Republican | Mike Rounds (incumbent) | 70,365 | 75.23% | |
Republican | Scyller Borglum | 23,164 | 24.77% | |
Total votes | 93,529 | 100.00% |
Source | Ranking | As of |
---|---|---|
The Cook Political Report[10] | Safe R | October 29, 2020 |
Inside Elections[11] | Safe R | October 28, 2020 |
Sabato's Crystal Ball[12] | Safe R | November 2, 2020 |
Daily Kos[13] | Safe R | October 30, 2020 |
Politico[14] | Safe R | November 2, 2020 |
RCP[15] | Safe R | October 23, 2020 |
DDHQ[16] | Safe R | November 3, 2020 |
538[17] | Safe R | November 2, 2020 |
Economist[18] | Safe R | November 2, 2020 |
Poll source | Date(s) administered |
Sample size[lower-alpha 1] |
Margin of error |
Mike Rounds (R) |
Dan Ahlers (D) |
Undecided |
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Nielson Brothers Polling[19] | October 24–28, 2020 | 479 (LV) | ± 4.48% | 56% | 39% | 5% |
Party | Candidate | Votes | % | ±% | |
---|---|---|---|---|---|
Republican | Mike Rounds (incumbent) | 276,232 | 65.74% | +15.37% | |
Democratic | Daniel Ahlers | 143,987 | 34.26% | +4.75% | |
Total votes | 420,219 | 100.00% | |||
Republican hold |
By county | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Counties that flipped from Democratic to Republican
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