- Lead
- 7,295
- Total
- 20,939
- vs nation
- R+33.4
Indiana 21st State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 6,314
- Total
- 22,451
- vs nation
- R+32.6
- Lead
- 6,387
- Total
- 20,564
- vs nation
- R+33.1
- Lead
- 5,479
- Total
- 20,860
- vs nation
- R+30.1
- Lead
- 2,426
- Total
- 22,074
- vs nation
- R+18.3
- Lead
- 7,540
- Total
- 19,171
- vs nation
- R+36.9
- Lead
- 6,170
- Total
- 16,859
- vs nation
- R+37.1
- Lead
- 3,716
- Total
- 15,778
- vs nation
- R+32.1
Key facts
- 2024 presidential margin
- R+34.8MIT Election Lab
- Population
- 67,3742024 5-year
- Population density
- 417 / sq mi2024 5-year · TIGER/Line
- Land area
- 162 sq miTIGER/Line
- Median household income
- $62,9272024 5-year
- White (non-Hispanic)
- 65.1%2024 5-year
- Black
- 8.6%2024 5-year
- Hispanic / Latino
- 21.2%2024 5-year
- Peak Democratic margin
- D+24.3 in 1912MIT Election Lab
- Peak Republican margin
- R+49.9 in 1928MIT Election Lab
- Most similar
- State House District 48, IN · twin score 96.0
presidential history
Party record book
Indiana 21st 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
51.0%
6,928 votes · D+2.6 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1932 · 49.5%
Republican
Herbert Hoover1928
74.8%
6,812 votes · R+49.9 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 71.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
9,726votes
44.1% of the vote · R+11.0 · modeled estimate
Runner-up · Joe Biden, 2020 · 7,888 votes
Republican
Donald Trump2020
14,202votes
63.3% of the vote · R+28.1 · modeled estimate
Runner-up · Donald Trump, 2024 · 13,970 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
Woodrow Wilson1912
+4.8pts D vs U.S.
Place D+24.3 · U.S. D+19.5 · a third-party candidate carried the Place · modeled estimate
Runner-up · William J. Bryan, 1908 · +2.5 pts
Republican
George W. Bush2000
+37.1pts R vs U.S.
Place R+36.6 · U.S. D+0.5 · modeled estimate
Runner-up · George W. Bush, 2004 · +36.9 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
Indiana 21st State House District sits in the Upper Midwest. In 2024 it voted Republican.
Across the recorded series it reached a Democratic high of 24.3 points in 1912 and a Republican high of 49.9 points in 1928. Between 2020 and 2024 the district moved 6.7 points toward the Republican candidate; the 2024 margin was 34.8 points.
A population of 67,374, a 65% non-Hispanic-white share, and a median household income of $62,927 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 48 and State House District 12.
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 →
Indiana 21st State House District. Akashic. https://akashic.app/sld-lower/18021/. Accessed May 20, 2026. License: CC BY 4.0.