- Lead
- 990
- Total
- 20,531
- vs nation
- R+3.4
Missouri 104th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 1,837
- Total
- 21,633
- vs nation
- R+12.9
- Lead
- 3,981
- Total
- 20,718
- vs nation
- R+21.3
- Lead
- 2,549
- Total
- 19,004
- vs nation
- R+17.3
- Lead
- 424
- Total
- 19,415
- vs nation
- R+9.5
- Lead
- 1,730
- Total
- 16,645
- vs nation
- R+7.9
- Lead
- 895
- Total
- 13,176
- vs nation
- R+7.3
- Lead
- 32
- Total
- 10,646
- vs nation
- R+8.2
Key facts
- 2024 presidential margin
- R+4.8MIT Election Lab
- Population
- 36,6332024 5-year
- Population density
- 3,738 / sq mi2024 5-year · TIGER/Line
- Land area
- 9.8 sq miTIGER/Line
- Median household income
- $97,8532024 5-year
- White (non-Hispanic)
- 83.1%2024 5-year
- Black
- 5.1%2024 5-year
- Hispanic / Latino
- 3.3%2024 5-year
- Peak Democratic margin
- D+36.1 in 1932MIT Election Lab
- Peak Republican margin
- R+40.0 in 1984MIT Election Lab
- Most similar
- State House District 106, MO · twin score 94.2
presidential history
Party record book
Missouri 104th 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
67.2%
782 votes · D+36.1 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 65.0%
Republican
Ronald Reagan1984
70.0%
4,560 votes · R+40.0 · modeled estimate
Runner-up · Warren G. Harding, 1920 · 68.6%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
9,669votes
44.7% of the vote · R+8.5 · modeled estimate
Runner-up · Kamala Harris, 2024 · 9,579 votes
Republican
Donald Trump2016
11,605votes
56.0% of the vote · R+19.2 · modeled estimate
Runner-up · Donald Trump, 2020 · 11,506 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
Al Smith1928
+22.2pts D vs U.S.
Place D+4.8 · U.S. R+17.5 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · +18.3 pts
Republican
Charles E. Hughes1916
+24.7pts R vs U.S.
Place R+21.5 · U.S. D+3.1 · modeled estimate
Runner-up · William H. Taft, 1912 · +22.6 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 | R | 41.2%6,143 | 58.8%8,761 | 14,904 |
Missouri House District 104 sits close enough to the competitive middle that a 4.8-point presidential margin tells a different story than the state's broader lopsided totals. Shifts in suburban composition have kept the seat within single-digit reach.
Across the recorded series it reached a Democratic high of 36.1 points in 1932 and a Republican high of 40.0 points in 1984. Between 2020 and 2024 the district moved 3.7 points toward the Democratic candidate; the 2024 margin was 4.8 points.
A population of 36,633, a 83% non-Hispanic-white share, and a median household income of $97,853 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 106 and State House District 88.
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 104th State House District. Akashic. https://akashic.app/sld-lower/29104/. Accessed May 20, 2026. License: CC BY 4.0.