- Lead
- 8,294
- Total
- 14,768
- vs nation
- R+54.7
Oklahoma 21st State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 7,300
- Total
- 13,297
- vs nation
- R+59.4
- Lead
- 6,171
- Total
- 11,212
- vs nation
- R+57.1
- Lead
- 4,999
- Total
- 10,473
- vs nation
- R+51.6
- Lead
- 4,213
- Total
- 10,899
- vs nation
- R+45.9
- Lead
- 2,941
- Total
- 11,275
- vs nation
- R+23.6
- Lead
- 1,027
- Total
- 9,223
- vs nation
- R+11.7
- Lead
- 1,196
- Total
- 8,758
- vs nation
- D+5.1
Key facts
- 2024 presidential margin
- R+56.2MIT Election Lab
- Population
- 38,4202024 5-year
- Population density
- 117 / sq mi2024 5-year · TIGER/Line
- Land area
- 329 sq miTIGER/Line
- Median household income
- $58,2182024 5-year
- White (non-Hispanic)
- 65.1%2024 5-year
- Black
- 1.4%2024 5-year
- Hispanic / Latino
- 8.0%2024 5-year
- Peak Democratic margin
- D+79.0 in 1932MIT Election Lab
- Peak Republican margin
- R+56.2 in 2024MIT Election Lab
- Most similar
- State House District 38, AR · twin score 97.3
presidential history
Party record book
Oklahoma 21st State House District · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1908–2024 · 30 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
Franklin D. Roosevelt1932
89.5%
5,637 votes · D+79.0 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 83.7%
Republican
Donald Trump2024
77.4%
11,434 votes · R+56.2 · modeled estimate
Runner-up · Donald Trump, 2020 · 76.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Franklin D. Roosevelt1940
6,435votes
77.9% of the vote · D+56.1 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 5,755 votes
Republican
Donald Trump2024
11,434votes
77.4% of the vote · R+56.2 · modeled estimate
Runner-up · Donald Trump, 2020 · 10,172 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
Harry S. Truman1948
+62.1pts D vs U.S.
Place D+66.5 · U.S. D+4.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · +61.2 pts
Republican
Donald Trump2020
+59.4pts R vs U.S.
Place R+54.9 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2016 · +57.1 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 |
|---|---|---|---|---|
| 2020 | R | 20.8%2,587 | 79.2%9,863 | 12,450 |
In 2024 it voted Republican by R+56.2, against R+38.7 in 2008. Evangelical Protestant adherents were the largest religious group at 58.8% in the 2020 US Religion Census.
Across the recorded series it reached a Democratic high of 79.0 points in 1932 and a Republican high of 56.2 points in 2024. Between 2020 and 2024 the district moved 1.3 points toward the Republican candidate; the 2024 margin was 56.2 points.
A population of 38,420, a 65% non-Hispanic-white share, and a median household income of $58,218 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 38 and State House District 13.
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 →
Oklahoma 21st State House District. Akashic. https://akashic.app/sld-lower/40021/. Accessed May 20, 2026. License: CC BY 4.0.