South Dakota 31st State Senate District (SD) — Elections 1892–2024

2024

How it voted

Share of the 2024 vote

Donald Trump ✓Republican	64.3%	9,902
Kamala HarrisDemocratic	32.9%	5,073
Robert F. Kennedy Jr.Other	2.8%	431

D+60

R+60

District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 1 county it's drawn from (shown faint).

The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.

County-level results (1 county) — table

2024 presidential result by county for South Dakota 31st State Senate District — winner and D-vs-R margin.
County	Winner	Margin
Lawrence County, SD	Republican	R+31.3

38 presidential elections

Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). † 2012 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year	Won	Democratic	Republican	Other	Margin	Total
2024	R	32.9%Harris5,073	64.3%Trump9,902	2.8%Kennedy431	−31.3%	15,406
2020	R	32.8%Biden4,536	63.3%Trump8,751	3.9%Jorgensen539	−30.5%	13,826
2016	R	28.3%Clinton3,355	62.6%Trump7,410	9.1%Johnson1,075	−34.2%	11,840
2012^†	R	35.0%Obama3,972	61.8%Romney7,024	3.2%Johnson361	−26.9%	11,357
2008	R	40.9%Obama4,931	56.3%McCain6,786	2.8%Nader336	−15.4%	12,053
2004	R	33.2%Kerry3,856	64.5%Bush7,488	2.4%Nader273	−31.3%	11,617
2000	R	29.7%Gore2,797	67.3%Bush6,326	3.0%Buchanan281	−37.5%	9,404
1996	R	37.8%Clinton3,567	46.9%Dole4,429	15.3%Browne1,444	−9.1%	9,440
1992	R	32.7%Clinton3,156	39.0%Bush3,769	28.3%Perot2,732	−6.3%	9,657
1988	R	39.5%Dukakis3,704	59.4%Bush5,569	1.1%Paul104	−19.9%	9,377
1984	R	29.9%Mondale2,565	69.4%Reagan5,948	0.6%Serrette54	−39.5%	8,567
1980	R	26.9%Carter2,259	63.1%Reagan5,305	10.0%Anderson838	−36.3%	8,402
1976	R	41.6%Carter3,101	56.5%Ford4,205	1.9%Macbride142	−14.8%	7,448
1972	R	34.5%McGovern2,533	65.2%Nixon4,794	0.3%Schmitz24	−30.8%	7,351
1968	R	34.9%Humphrey2,425	60.2%Nixon4,184	4.9%Wallace338	−25.3%	6,947
1964	R	48.1%Johnson3,467	51.9%Goldwater3,742	0.0%Hass1	−3.8%	7,210
1960	R	33.9%Kennedy2,612	66.1%Nixon5,082	0.0%	−32.1%	7,694
1956	R	28.7%Stevenson1,871	71.3%Eisenhower4,653	0.0%	−42.6%	6,524
1952	R	23.4%Stevenson1,701	76.6%Eisenhower5,558	0.0%	−53.1%	7,259
1948	R	36.5%Truman2,209	62.5%Dewey3,777	1.0%Thurmond58	−25.9%	6,044
1944	R	34.6%Roosevelt1,866	65.4%Dewey3,527	0.0%	−30.8%	5,393
1940	R	39.9%Roosevelt3,514	60.1%Willkie5,287	0.0%	−20.1%	8,801
1936	R	43.0%Roosevelt3,808	56.2%Landon4,973	0.8%Lemke69	−13.2%	8,850
1932	R	45.2%Roosevelt3,105	54.0%Hoover3,707	0.8%Thomas55	−8.8%	6,867
1928	R	30.0%Smith1,785	69.6%Hoover4,140	0.4%Thomas21	−39.6%	5,946
1924	R	14.2%Davis649	71.1%Coolidge3,254	14.8%La Follette676	−56.9%	4,579
1920	R	27.6%Cox1,201	68.5%Harding2,985	3.9%Debs172	−40.9%	4,358
1916	D	49.4%Wilson2,157	47.5%Hughes2,074	3.0%Benson133	+1.9%	4,364
1912	D	54.0%Wilson2,412	0.0%Taft0	46.0%Roosevelt2,058	+54.0%	4,470
1908	R	29.1%Bryan1,564	50.9%Taft2,735	20.0%Debs1,077	−21.8%	5,376
1904	R	20.8%Parker1,347	65.5%Roosevelt4,246	13.7%Debs887	−44.7%	6,480
1900	R	42.7%Bryan2,619	56.0%McKinley3,434	1.4%Woolley84	−13.3%	6,137
1896	D	56.4%Bryan2,904	42.9%McKinley2,210	0.7%Palmer35	+13.5%	5,149
1892	R	13.1%Cleveland546	51.2%Harrison2,140	35.7%Weaver1,494	−38.1%	4,180
1888	—	—	—	—	No data	—
1884	—	—	—	—	No data	—
1880	—	—	—	—	No data	—
1876	—	—	—	—	No data	—

presidential history

Presidential margin, 1892–2024

Democratic minus Republican, by election

Presidential margin over time
Year	Margin (D minus R)
1892	−38.1%
1896	+13.5%
1900	−13.3%
1904	−44.7%
1908	−21.8%
1912	+54.0%
1916	+1.9%
1920	−40.9%
1924	−56.9%
1928	−39.6%
1932	−8.8%
1936	−13.2%
1940	−20.1%
1944	−30.8%
1948	−25.9%
1952	−53.1%
1956	−42.6%
1960	−32.1%
1964	−3.8%
1968	−25.3%
1972	−30.8%
1976	−14.8%
1980	−36.3%
1984	−39.5%
1988	−19.9%
1992	−6.3%
1996	−9.1%
2000	−37.5%
2004	−31.3%
2008	−15.4%
2012	−26.9%
2016	−34.2%
2020	−30.5%
2024	−31.3%

DemocraticRepublican

current representation

Current officeholders

RRandy DeibertState Senate · 31

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

The district recorded a Republican presidential margin of R+31.3 in 2024 and R+15.4 in 2008, switching sides at least once in between. About 27,200 residents lived here, with White alone at 90.4% in the 2024 ACS 5-year.

Across the recorded series it reached a Democratic high of 54.0 points in 1912 and a Republican high of 56.9 points in 1924. Between 2020 and 2024 the district moved 0.9 points toward the Republican candidate; the 2024 margin was 31.3 points.

A population of 25,768, a 91% non-Hispanic-white share, and a median household income of $73,384 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 30 and State Senate District 28.

Political twins — state-senate districts

The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

State Senate District 30

South Dakota

94.8twin score

2016–2024 trajectorypopulation scale

State Senate District 28

Montana

91.6twin score

2012–2020 trajectorypopulation scale≠ % unaffiliated

State Senate District 7

Montana

90.1twin score

2012–2020 trajectorypopulation scale≠ 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.

Compare two places, side by side

Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →

Cite this page

All citations released under CC BY 4.0. Attribution: Akashic Intelligence.

South Dakota 31st State Senate District. Akashic. https://akashic.app/sld-upper/46031/. Accessed May 20, 2026. License: CC BY 4.0.

License: CC BY 4.0

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Places within South Dakota 31st State Senate District

counties it covers1

Lawrence County

Frequently asked questions

How did South Dakota 31st State Senate District vote in 2024?

In 2024, South Dakota 31st State Senate District voted Republican by 31.3 points (R+31.3), carried by the Republican candidate. Out of 15,406 votes cast, 5,073 went Democratic and 9,902 went Republican.

When did South Dakota 31st State Senate District last vote Democratic?

The most recent presidential election in which South Dakota 31st State Senate District voted Democratic was 1916.

How many people live in South Dakota 31st State Senate District?

South Dakota 31st State Senate District has a population of 25,768 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.

What is the median household income in South Dakota 31st State Senate District?

Median household income in South Dakota 31st State Senate District is $73,384 — below the national median of $80,734. The South Dakota state median is $75,081.

What is the political history of South Dakota 31st State Senate District?

Akashic tracks 38 presidential elections in South Dakota 31st State Senate District from 1876 to 2024. Of those, 3 went Democratic and 31 went Republican.