- Lead
- 15,715
- Total
- 30,616
- vs nation
- R+49.9
Oklahoma 31st State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 15,387
- Total
- 30,836
- vs nation
- R+54.4
- Lead
- 13,849
- Total
- 28,683
- vs nation
- R+50.4
- Lead
- 9,822
- Total
- 26,430
- vs nation
- R+41.0
- Lead
- 10,432
- Total
- 29,392
- vs nation
- R+42.8
- Lead
- 9,049
- Total
- 29,013
- vs nation
- R+28.7
- Lead
- 4,571
- Total
- 26,328
- vs nation
- R+17.9
- Lead
- 191
- Total
- 26,853
- vs nation
- R+7.8
Key facts
- 2024 presidential margin
- R+51.3MIT Election Lab
- Population
- 80,5682024 5-year
- Population density
- 26 / sq mi2024 5-year · TIGER/Line
- Land area
- 3,096 sq miTIGER/Line
- Median household income
- $63,5502024 5-year
- White (non-Hispanic)
- 64.3%2024 5-year
- Black
- 8.6%2024 5-year
- Hispanic / Latino
- 11.2%2024 5-year
- Peak Democratic margin
- D+73.7 in 1932MIT Election Lab
- Peak Republican margin
- R+51.3 in 2024MIT Election Lab
- Most similar
- State Senate District 14, OK · twin score 99.0
presidential history
Party record book
Oklahoma 31st State Senate 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
86.9%
16,529 votes · D+73.7 · modeled estimate
Runner-up · Harry S. Truman, 1948 · 80.7%
Republican
Donald Trump2024
74.8%
22,916 votes · R+51.3 · modeled estimate
Runner-up · Donald Trump, 2020 · 73.9%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Franklin D. Roosevelt1932
16,529votes
86.9% of the vote · D+73.7 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 15,428 votes
Republican
Donald Trump2024
22,916votes
74.8% of the vote · R+51.3 · modeled estimate
Runner-up · Donald Trump, 2020 · 22,792 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
+56.8pts D vs U.S.
Place D+61.3 · U.S. D+4.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · +55.9 pts
Republican
Donald Trump2020
+54.4pts R vs U.S.
Place R+49.9 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2016 · +50.4 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 |
|---|---|---|---|---|
| 2024 | R | 24.1%7,025 | 75.9%22,095 | 29,120 |
Its Republican presidential margin was R+51.3 in 2024 and R+35.5 in 2008. Evangelical Protestant adherents were the largest religious group at 48.9% in the 2020 US Religion Census.
Across the recorded series it reached a Democratic high of 73.7 points in 1932 and a Republican high of 51.3 points in 2024. Between 2020 and 2024 the district moved 1.4 points toward the Republican candidate; the 2024 margin was 51.3 points.
A population of 80,568, a 64% non-Hispanic-white share, and a median household income of $63,550 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 14 and State Senate District 38.
The state-senate 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 31st State Senate District. Akashic. https://akashic.app/sld-upper/40031/. Accessed May 20, 2026. License: CC BY 4.0.