Oklahoma 40th State Senate District
Presidential margin, 2004–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 2004 | −32.8% |
| 2008 | −16.7% |
| 2012 | −18.1% |
| 2016 | −4.6% |
| 2020 | +6.5% |
| 2024 | +6.0% |
| Year | Won | Democratic | Republican | Other | Margin | Swing | vs U.S. | Total |
|---|---|---|---|---|---|---|---|---|
| D | 51.8%Harris18,509 | 45.8%Trump16,362 | 2.4% | D+6.0 | R+0.5 | D+7.5 | 35,716 | |
| D | 51.9%Biden18,773 | 45.4%Trump16,407 | 2.7% | D+6.5 | D+11.1 | D+2.1 | 36,141 | |
| R | 43.7%Clinton15,246 | 48.3%Trump16,848 | 7.9% | R+4.6 | D+13.5 | R+6.7 | 34,863 | |
| R | 40.9%Obama13,630 | 59.1%Romney19,667 | — | R+18.1 | R+1.4 | R+22.0 | 33,297 | |
| R | 41.5%Obama15,682 | 58.2%McCain22,001 | 0.4% | R+16.7 | D+16.1 | R+24.0 | 37,831 | |
| R | 33.6%Kerry12,685 | 66.4%Bush25,087 | 0.0% | R+32.8 | — | R+30.4 | 37,772 |
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
With a 2024 presidential margin of R+43.4, District 40 sits among the most heavily one-sided state senate seats in Oklahoma, reflecting the heavily Republican political alignment typical of its regional geography and demographics.
Across the recorded series it reached a Democratic high of 6.5 points in 2020 and a Republican high of 32.8 points in 2004. Between 2020 and 2024 the district moved 0.5 points toward the Republican candidate; the 2024 margin was 6.0 points.
A population of 82,302, a 60% non-Hispanic-white share, and a median household income of $69,976 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 39 and State Senate District 13.
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.
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 →
Oklahoma 40th State Senate District. Akashic. https://akashic.app/sld-upper/40040/. Accessed May 20, 2026. License: CC BY 4.0.