- Lead
- 1,874
- Total
- 8,160
- vs nation
- R+21.5
South Dakota 1st State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 2,403
- Total
- 13,070
- vs nation
- R+22.8
- Lead
- 2,140
- Total
- 12,123
- vs nation
- R+19.7
- Lead
- 791
- Total
- 12,692
- vs nation
- D+2.4
- Lead
- 2,240
- Total
- 14,058
- vs nation
- D+8.7
- Lead
- 132
- Total
- 14,931
- vs nation
- D+3.3
- Lead
- 844
- Total
- 13,051
- vs nation
- R+7.0
- Lead
- 2,060
- Total
- 13,717
- vs nation
- D+6.5
Key facts
- 2024 presidential margin
- R+23.0MIT Election Lab
- Population
- 26,6002024 5-year
- Population density
- 6.1 / sq mi2024 5-year · TIGER/Line
- Land area
- 4,392 sq miTIGER/Line
- Median household income
- $73,8612024 5-year
- White (non-Hispanic)
- 75.1%2024 5-year
- Black
- 0.1%2024 5-year
- Hispanic / Latino
- 2.9%2024 5-year
- Peak Democratic margin
- D+41.0 in 1912MIT Election Lab
- Peak Republican margin
- R+53.6 in 1904MIT Election Lab
- Most similar
- State House District 15A, MN · twin score 96.2
presidential history
Party record book
South Dakota 1st State House 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
Barack Obama2008
57.3%
8,053 votes · D+15.9 · modeled estimate
Runner-up · Michael Dukakis, 1988 · 55.0%
Republican
Theodore Roosevelt1904
72.0%
5,441 votes · R+53.6 · modeled estimate
Runner-up · Donald Trump, 2024 · 60.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Michael Dukakis1988
8,102votes
55.0% of the vote · D+10.4 · modeled estimate
Runner-up · Barack Obama, 2008 · 8,053 votes
Republican
Ronald Reagan1980
9,028votes
55.9% of the vote · R+17.9 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 8,395 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
+21.4pts D vs U.S.
Place D+41.0 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate
Runner-up · Michael Dukakis, 1988 · +18.2 pts
Republican
Benjamin Harrison1892
+34.1pts R vs U.S.
Place R+32.5 · U.S. D+1.7 · modeled estimate
Runner-up · Theodore Roosevelt, 1904 · +34.0 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%9,590 | 9,590 |
Covering the sparsely populated northwestern corner of the state, this district's economy centers on cattle ranching and agriculture, producing consistent double-digit Republican margins in statewide and federal contests.
Across the recorded series it reached a Democratic high of 41.0 points in 1912 and a Republican high of 53.6 points in 1904. Between 2020 and 2024 the district moved 4.6 points toward the Republican candidate; the 2024 margin was 23.0 points.
A population of 26,600, a 75% non-Hispanic-white share, and a median household income of $73,861 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 15A and State House District 3.
The state-house 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 1st State House District. Akashic. https://akashic.app/sld-lower/46001/. Accessed May 20, 2026. License: CC BY 4.0.