- Lead
- 5,747
- Total
- 12,828
- vs nation
- R+43.3
South Dakota 16th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 5,253
- Total
- 12,729
- vs nation
- R+45.7
- Lead
- 4,530
- Total
- 11,394
- vs nation
- R+41.8
- Lead
- 3,176
- Total
- 10,730
- vs nation
- R+33.5
- Lead
- 1,998
- Total
- 10,551
- vs nation
- R+26.2
- Lead
- 2,877
- Total
- 10,114
- vs nation
- R+26.0
- Lead
- 1,918
- Total
- 7,555
- vs nation
- R+25.9
- Lead
- 493
- Total
- 6,934
- vs nation
- R+15.6
Key facts
- 2024 presidential margin
- R+44.8MIT Election Lab
- Population
- 24,2522024 5-year
- Population density
- 19 / sq mi2024 5-year · TIGER/Line
- Land area
- 1,269 sq miTIGER/Line
- Median household income
- $79,8252024 5-year
- White (non-Hispanic)
- 92.9%2024 5-year
- Black
- 0.4%2024 5-year
- Hispanic / Latino
- 2.5%2024 5-year
- Peak Democratic margin
- D+33.9 in 1912MIT Election Lab
- Peak Republican margin
- R+60.0 in 1904MIT Election Lab
- Most similar
- State Senate District 31, SD · twin score 90.9
presidential history
Party record book
South Dakota 16th State Senate District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 20 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Michael Dukakis1988
45.6%
2,980 votes · R+8.4 · modeled estimate
Runner-up · Woodrow Wilson, 1916 · 43.3%
Republican
Theodore Roosevelt1904
77.8%
3,242 votes · R+60.0 · modeled estimate
Runner-up · Donald Trump, 2024 · 71.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
4,160votes
39.4% of the vote · R+18.9 · modeled estimate
Runner-up · Barack Obama, 2012 · 3,692 votes
Republican
Donald Trump2024
9,139votes
71.2% of the vote · R+44.8 · modeled estimate
Runner-up · Donald Trump, 2020 · 8,820 votes
Best relative to the U.S.
This Place’s margin against the national margin in the same election — positive when it leaned toward the party more than the country did.
Democratic
Woodrow Wilson1912
+14.3pts D vs U.S.
Place D+33.9 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate
Runner-up · Michael Dukakis, 1988 · −0.7 pts
Republican
Donald Trump2020
+45.7pts R vs U.S.
Place R+41.3 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2024 · +43.3 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Senate and governor results are in the Office selector at the top of this page.
U.S. House
Each row is a county-allocated estimate of U.S. House votes for this district — county returns apportioned onto its boundary, not precinct-counted. “Vote lead” is the estimated local lead here, not necessarily the winner of the full contest.
| Year | Vote lead | Democratic | Republican | Total |
|---|---|---|---|---|
| 2020 | R | 0.0%0 | 100.0%9,527 | 9,527 |
With a 2024 presidential margin of R+44.8, this sparsely populated district of roughly 24,000 residents reflects the heavily Republican tendencies common to rural Great Plains constituencies, where statewide Republican candidates consistently post commanding margins.
Across the recorded series it reached a Democratic high of 33.9 points in 1912 and a Republican high of 60.0 points in 1904. Between 2020 and 2024 the district moved 3.5 points toward the Republican candidate; the 2024 margin was 44.8 points.
A population of 24,252, a 93% non-Hispanic-white share, and a median household income of $79,825 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 31 and State Senate District 13.
The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
District research tools
Open the source-auditable district brief for electoral baseline, electorate, current-cycle coverage, geography, official dates, and methodology. Open campaign intelligence report → · Browse all comparisons →
South Dakota 16th State Senate District. Akashic. https://akashic.app/sld-upper/46016/. Accessed May 20, 2026. License: CC BY 4.0.