- Lead
- 4,121
- Total
- 14,396
- vs nation
- D+30.1
South Carolina 109th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 5,971
- Total
- 16,619
- vs nation
- D+31.5
- Lead
- 4,371
- Total
- 14,631
- vs nation
- D+27.8
- Lead
- 3,876
- Total
- 13,375
- vs nation
- D+25.1
- Lead
- 4,148
- Total
- 12,773
- vs nation
- D+25.2
- Lead
- 2,240
- Total
- 10,317
- vs nation
- D+24.2
- Lead
- 1,717
- Total
- 8,283
- vs nation
- D+20.2
- Lead
- 1,652
- Total
- 7,016
- vs nation
- D+15.0
Key facts
- 2024 presidential margin
- D+28.6MIT Election Lab
- Population
- 42,0202024 5-year
- Population density
- 2,247 / sq mi2024 5-year · TIGER/Line
- Land area
- 18.7 sq miTIGER/Line
- Median household income
- $64,6032024 5-year
- White (non-Hispanic)
- 32.2%2024 5-year
- Black
- 46.4%2024 5-year
- Hispanic / Latino
- 14.0%2024 5-year
- Peak Democratic margin
- D+97.9 in 1912MIT Election Lab
- Peak Republican margin
- R+4.4 in 1964MIT Election Lab
- Most similar
- State House District 113, SC · twin score 95.9
presidential history
Party record book
South Carolina 109th 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
98.4%
677 votes · D+96.8 · modeled estimate
Runner-up · Woodrow Wilson, 1912 · 98.3%
Republican
Barry Goldwater1964
52.2%
1,311 votes · R+4.4 · modeled estimate
Runner-up · Richard Nixon, 1972 · 51.2%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
11,144votes
67.1% of the vote · D+35.9 · modeled estimate
Runner-up · Hillary Clinton, 2016 · 9,192 votes
Republican
Donald Trump2020
5,173votes
31.1% of the vote · D+35.9 · modeled estimate
Runner-up · Donald Trump, 2024 · 5,005 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
James M. Cox1920
+119.7pts D vs U.S.
Place D+93.5 · U.S. R+26.2 · modeled estimate
Runner-up · John W. Davis, 1924 · +118.9 pts
Republican
Barry Goldwater1964
+27.0pts R vs U.S.
Place R+4.4 · U.S. D+22.6 · modeled estimate
Runner-up · Richard Nixon, 1960 · −13.1 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 |
|---|---|---|---|---|
| 2018 | D | 56.3%7,857 | 43.7%6,091 | 13,948 |
With a 2024 presidential margin of D+28.6, District 109 sits well outside competitive territory, reflecting a heavily Democratic-aligned electorate in its corner of South Carolina.
Across the recorded series it reached a Democratic high of 97.9 points in 1912 and a Republican high of 4.4 points in 1964. Between 2020 and 2024 the district moved 7.3 points toward the Republican candidate; the 2024 margin was 28.6 points.
A population of 42,020, a 32% non-Hispanic-white share, and a median household income of $64,603 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 113 and State House District 87.
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 109th State House District. Akashic. https://akashic.app/sld-lower/45109/. Accessed May 20, 2026. License: CC BY 4.0.