HarrisDemocratic25.9%4,103TrumpRepublican71.9%11,399OtherAll other candidates2.2%354
R+46.0- Lead
- 7,296
- Total
- 15,856
- vs nation
- R+44.5
modeled Census-place estimatemodeled estimate
Akashicstate house district
South Dakota 30th State House District
Office (updates table and map)
President margin by year
Place winner margin
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
President results by year
Modeled candidate-vote estimate on current district boundaries
BidenDemocratic27.1%4,089TrumpRepublican70.3%10,601OtherAll other candidates2.5%384
R+43.2- Lead
- 6,512
- Total
- 15,074
- vs nation
- R+47.7
modeled Census-place estimatemodeled estimate
ClintonDemocratic23.0%2,968TrumpRepublican70.4%9,093OtherAll other candidates6.6%847
R+47.5- Lead
- 6,125
- Total
- 12,908
- vs nation
- R+49.5
modeled Census-place estimatemodeled estimate
ObamaDemocratic28.9%3,561RomneyRepublican68.6%8,442OtherAll other candidates2.5%312
R+39.6- Lead
- 4,881
- Total
- 12,315
- vs nation
- R+43.5
modeled Census-place estimatemodeled estimate
ObamaDemocratic32.2%4,094McCainRepublican65.4%8,310OtherAll other candidates2.4%301
R+33.2- Lead
- 4,216
- Total
- 12,705
- vs nation
- R+40.5
modeled Census-place estimatemodeled estimate
KerryDemocratic29.0%3,630BushRepublican69.0%8,644OtherAll other candidates2.1%257
R+40.0- Lead
- 5,014
- Total
- 12,531
- vs nation
- R+37.6
modeled Census-place estimatemodeled estimate
GoreDemocratic27.5%2,917BushRepublican69.9%7,407OtherAll other candidates2.6%272
R+42.4- Lead
- 4,490
- Total
- 10,596
- vs nation
- R+42.9
modeled Census-place estimatemodeled estimate
ClintonDemocratic33.7%3,432DoleRepublican54.1%5,507OtherAll other candidates12.2%1,239
R+20.4- Lead
- 2,075
- Total
- 10,178
- vs nation
- R+28.9
modeled Census-place estimatemodeled estimate
Key facts
- 2024 presidential margin
- R+46.0MIT Election Lab
- Population
- 24,8582024 5-year
- Population density
- 6.1 / sq mi2024 5-year · TIGER/Line
- Land area
- 4,070 sq miTIGER/Line
- Median household income
- $82,5042024 5-year
- White (non-Hispanic)
- 86.6%2024 5-year
- Black
- 0.5%2024 5-year
- Hispanic / Latino
- 3.3%2024 5-year
- Peak Democratic margin
- D+43.5 in 1912MIT Election Lab
- Peak Republican margin
- R+49.6 in 1980MIT Election Lab
- Most similar
- State House District 33, SD · twin score 94.9
presidential history
Party record book
South Dakota 30th 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
Woodrow Wilson1916
53.5%
1,483 votes · D+11.1 · modeled estimate
Runner-up · William J. Bryan, 1896 · 52.1%
Republican
Ronald Reagan1984
73.6%
7,351 votes · R+47.7 · modeled estimate
Runner-up · Donald Trump, 2024 · 71.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Kamala Harris2024
4,103votes
25.9% of the vote · R+46.0 · modeled estimate
Runner-up · Barack Obama, 2008 · 4,094 votes
Republican
Donald Trump2024
11,399votes
71.9% of the vote · R+46.0 · modeled estimate
Runner-up · Donald Trump, 2020 · 10,601 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
+24.0pts D vs U.S.
Place D+43.5 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate
Runner-up · William J. Bryan, 1896 · +10.5 pts
Republican
Donald Trump2016
+49.5pts R vs U.S.
Place R+47.5 · U.S. D+2.1 · modeled estimate
Runner-up · Donald Trump, 2020 · +47.7 pts
current representation
Current officeholders
RTim GoodwinState House · 30
RTrish LadnerState House · 30
State legislative officeholder from OpenStates nightly current-legislator data.
U.S. House elections · 2 House
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 |
|---|---|---|---|---|
| 2024 | R | 25.1%4,306 | 74.9%12,861 | 17,167 |
| 2020 | R | 0.0%0 | 100.0%10,613 | 10,613 |
With a 46.0-point Republican presidential margin and a population under 25,000, this western South Dakota district ranks among the state's most reliably one-sided constituencies, leaving general elections largely uncontested.
Across the recorded series it reached a Democratic high of 43.5 points in 1912 and a Republican high of 49.6 points in 1980. Between 2020 and 2024 the district moved 2.8 points toward the Republican candidate; the 2024 margin was 46.0 points.
A population of 24,858, a 87% non-Hispanic-white share, and a median household income of $82,504 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 33 and State House District 31.
Political twins — state-house districts
The state-house districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
State House District 33
South Dakota
94.9twin score
2008–2020 trajectory≠ median age
State House District 31
South Dakota
90.7twin score
2012–2024 trajectory≠ median age
State House District 34
South Dakota
88.5twin score
2008–2020 trajectory≠ median age
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 →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
South Dakota 30th State House District. Akashic. https://akashic.app/sld-lower/46030/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
South Dakota at the ballot boxAll elections →
Places within South Dakota 30th State House District
counties it covers3
Frequently asked questions
How did South Dakota 30th State House District vote in 2024?
In 2024, South Dakota 30th State House District voted Republican by 46.0 points (R+46.0), carried by the Republican candidate. Out of 15,856 votes cast, 4,103 went Democratic and 11,399 went Republican.
When did South Dakota 30th State House District last vote Democratic?
The most recent presidential election in which South Dakota 30th State House District voted Democratic was 1936.
How many people live in South Dakota 30th State House District?
South Dakota 30th State House District has a population of 24,858 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in South Dakota 30th State House District?
Median household income in South Dakota 30th State House District is $82,504 — above the national median of $80,734. The South Dakota state median is $75,081.
What is the political history of South Dakota 30th State House District?
Akashic tracks 38 presidential elections in South Dakota 30th State House District from 1876 to 2024. Of those, 4 went Democratic and 29 went Republican.