- Lead
- 3,119
- Total
- 8,380
- vs nation
- R+35.7
Missouri 121st State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 2,181
- Total
- 7,059
- vs nation
- R+35.4
- Lead
- 2,687
- Total
- 6,711
- vs nation
- R+42.1
- Lead
- 1,626
- Total
- 6,771
- vs nation
- R+27.9
- Lead
- 1,150
- Total
- 7,585
- vs nation
- R+22.4
- Lead
- 1,748
- Total
- 6,103
- vs nation
- R+26.2
- Lead
- 654
- Total
- 5,359
- vs nation
- R+12.7
- Lead
- 473
- Total
- 4,835
- vs nation
- D+1.3
Key facts
- 2024 presidential margin
- R+37.2MIT Election Lab
- Population
- 38,7312024 5-year
- Population density
- 168 / sq mi2024 5-year · TIGER/Line
- Land area
- 230 sq miTIGER/Line
- Median household income
- $68,5702024 5-year
- White (non-Hispanic)
- 58.9%2024 5-year
- Black
- 14.7%2024 5-year
- Hispanic / Latino
- 13.9%2024 5-year
- Peak Democratic margin
- D+50.3 in 1932MIT Election Lab
- Peak Republican margin
- R+40.0 in 2016MIT Election Lab
- Most similar
- State House District 14, NC · twin score 91.3
presidential history
Party record book
Missouri 121st 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. Roosevelt1932
74.8%
1,986 votes · D+50.3 · modeled estimate
Runner-up · Samuel J. Tilden, 1876 · 72.6%
Republican
Donald Trump2024
67.8%
5,680 votes · R+37.2 · modeled estimate
Runner-up · Donald Trump, 2016 · 66.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
3,172votes
41.8% of the vote · R+15.2 · modeled estimate
Runner-up · Jimmy Carter, 1976 · 2,656 votes
Republican
Donald Trump2024
5,680votes
67.8% of the vote · R+37.2 · modeled estimate
Runner-up · Donald Trump, 2020 · 4,516 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
+52.8pts D vs U.S.
Place D+27.7 · U.S. R+25.2 · modeled estimate
Runner-up · Alton B. Parker, 1904 · +49.7 pts
Republican
Donald Trump2016
+42.1pts R vs U.S.
Place R+40.0 · U.S. D+2.1 · modeled estimate
Runner-up · Donald Trump, 2024 · +35.7 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Missouri 121st State House District sits in the Border South. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 50.3 points in 1932 and a Republican high of 40.0 points in 2016. Between 2020 and 2024 the district moved 6.3 points toward the Republican candidate; the 2024 margin was 37.2 points.
A population of 38,731, a 59% non-Hispanic-white share, and a median household income of $68,570 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 14 and State House District 15.
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 →
Missouri 121st State House District. Akashic. https://akashic.app/sld-lower/29121/. Accessed May 20, 2026. License: CC BY 4.0.