- Lead
- 7,378
- Total
- 19,934
- vs nation
- R+35.5
South Carolina 40th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 5,591
- Total
- 20,334
- vs nation
- R+32.0
- Lead
- 4,811
- Total
- 18,276
- vs nation
- R+28.4
- Lead
- 3,309
- Total
- 17,716
- vs nation
- R+22.5
- Lead
- 3,851
- Total
- 17,859
- vs nation
- R+28.8
- Lead
- 4,043
- Total
- 13,573
- vs nation
- R+27.3
- Lead
- 3,809
- Total
- 13,396
- vs nation
- R+29.0
- Lead
- 1,356
- Total
- 11,950
- vs nation
- R+19.9
Key facts
- 2024 presidential margin
- R+37.0MIT Election Lab
- Population
- 40,2902024 5-year
- Population density
- 63 / sq mi2024 5-year · TIGER/Line
- Land area
- 640 sq miTIGER/Line
- Median household income
- $62,8982024 5-year
- White (non-Hispanic)
- 61.9%2024 5-year
- Black
- 25.9%2024 5-year
- Hispanic / Latino
- 8.4%2024 5-year
- Peak Democratic margin
- D+99.2 in 1936MIT Election Lab
- Peak Republican margin
- R+57.0 in 1972MIT Election Lab
- Most similar
- State House District 53, SC · twin score 90.2
presidential history
Party record book
South Carolina 40th State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 (partial returns from 1876) · 38 presidential cycles · 38 with a vote-share denominator · 34 with a national benchmark
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1936
99.6%
2,623 votes · D+99.2 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 99.6%
Republican
Richard Nixon1972
77.7%
7,707 votes · R+57.0 · modeled estimate
Runner-up · Donald Trump, 2024 · 67.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
7,248votes
35.6% of the vote · R+27.5 · modeled estimate
Runner-up · Barack Obama, 2012 · 7,108 votes
Republican
Donald Trump2024
13,539votes
67.9% of the vote · R+37.0 · modeled estimate
Runner-up · Donald Trump, 2020 · 12,839 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
John W. Davis1924
+123.6pts D vs U.S.
Place D+98.5 · U.S. R+25.2 · modeled estimate
Runner-up · James M. Cox, 1920 · +122.6 pts
Republican
Barry Goldwater1964
+50.5pts R vs U.S.
Place R+27.9 · U.S. D+22.6 · modeled estimate
Runner-up · Donald Trump, 2024 · +35.5 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.
With a 2024 presidential margin of R+37, this district sits well outside competitive territory, suggesting a predominantly rural or exurban electorate that has consolidated strongly around Republican candidates over the past decade.
Across the recorded series it reached a Democratic high of 99.2 points in 1936 and a Republican high of 57.0 points in 1972. Between 2020 and 2024 the district moved 9.5 points toward the Republican candidate; the 2024 margin was 37.0 points.
A population of 40,290, a 62% non-Hispanic-white share, and a median household income of $62,898 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 53 and State House District 97.
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 Carolina 40th State House District. Akashic. https://akashic.app/sld-lower/45040/. Accessed May 20, 2026. License: CC BY 4.0.