- Lead
- 11,084
- Total
- 21,852
- vs nation
- R+49.3
Missouri 42nd State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 9,482
- Total
- 20,081
- vs nation
- R+51.7
- Lead
- 8,113
- Total
- 17,400
- vs nation
- R+48.7
- Lead
- 4,509
- Total
- 16,220
- vs nation
- R+31.7
- Lead
- 2,324
- Total
- 17,306
- vs nation
- R+20.7
- Lead
- 2,854
- Total
- 15,136
- vs nation
- R+16.4
- Lead
- 1,788
- Total
- 12,305
- vs nation
- R+15.0
- Lead
- 319
- Total
- 10,131
- vs nation
- R+11.7
Key facts
- 2024 presidential margin
- R+50.7MIT Election Lab
- Population
- 38,7812024 5-year
- Population density
- 64 / sq mi2024 5-year · TIGER/Line
- Land area
- 608 sq miTIGER/Line
- Median household income
- $79,5212024 5-year
- White (non-Hispanic)
- 88.0%2024 5-year
- Black
- 1.9%2024 5-year
- Hispanic / Latino
- 3.8%2024 5-year
- Peak Democratic margin
- D+3.0 in 1992MIT Election Lab
- Peak Republican margin
- R+52.4 in 1920MIT Election Lab
- Most similar
- State House District 40, MO · twin score 97.3
presidential history
Party record book
Missouri 42nd 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
Lyndon B. Johnson1964
47.9%
2,860 votes · R+4.2 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 47.8%
Republican
Warren G. Harding1920
75.5%
4,692 votes · R+52.4 · modeled estimate
Runner-up · Donald Trump, 2024 · 74.8%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
7,385votes
42.7% of the vote · R+13.4 · modeled estimate
Runner-up · John Kerry, 2004 · 6,089 votes
Republican
Donald Trump2024
16,354votes
74.8% of the vote · R+50.7 · modeled estimate
Runner-up · Donald Trump, 2020 · 14,574 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
Bill Clinton1992
−2.6pts D vs U.S.
Place D+3.0 · U.S. D+5.6 · modeled estimate
Runner-up · Bill Clinton, 1996 · −11.7 pts
Republican
Wendell Willkie1940
+52.3pts R vs U.S.
Place R+42.4 · U.S. D+9.9 · modeled estimate
Runner-up · Donald Trump, 2020 · +51.7 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 | 28.7%4,086 | 71.3%10,151 | 14,237 |
With a 2024 presidential margin exceeding 50 points, this district sits at the far end of Missouri's partisan distribution. Its roughly 38,000 residents give Republican candidates a structural advantage that rarely invites competitive general-election contests.
Across the recorded series it reached a Democratic high of 3.0 points in 1992 and a Republican high of 52.4 points in 1920. Between 2020 and 2024 the district moved 3.5 points toward the Republican candidate; the 2024 margin was 50.7 points.
A population of 38,781, a 88% non-Hispanic-white share, and a median household income of $79,521 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 40 and State House District 111.
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 42nd State House District. Akashic. https://akashic.app/sld-lower/29042/. Accessed May 20, 2026. License: CC BY 4.0.