- Lead
- 16,652
- Total
- 30,877
- vs nation
- R+52.5
Indiana 18th State House District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 16,672
- Total
- 31,381
- vs nation
- R+57.6
- Lead
- 15,005
- Total
- 27,729
- vs nation
- R+56.2
- Lead
- 11,947
- Total
- 26,448
- vs nation
- R+49.0
- Lead
- 7,648
- Total
- 26,935
- vs nation
- R+35.7
- Lead
- 12,532
- Total
- 24,945
- vs nation
- R+47.8
- Lead
- 9,564
- Total
- 22,370
- vs nation
- R+43.3
- Lead
- 5,503
- Total
- 20,913
- vs nation
- R+34.8
Key facts
- 2024 presidential margin
- R+53.9MIT Election Lab
- Population
- 68,1692024 5-year
- Population density
- 108 / sq mi2024 5-year · TIGER/Line
- Land area
- 628 sq miTIGER/Line
- Median household income
- $77,9582024 5-year
- White (non-Hispanic)
- 87.3%2024 5-year
- Black
- 0.4%2024 5-year
- Hispanic / Latino
- 9.1%2024 5-year
- Peak Democratic margin
- D+20.2 in 1912MIT Election Lab
- Peak Republican margin
- R+54.1 in 2016MIT Election Lab
- Most similar
- State House District 50, IN · twin score 97.3
presidential history
Party record book
Indiana 18th 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
51.3%
8,078 votes · D+4.7 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 50.0%
Republican
Donald Trump2024
76.1%
23,512 votes · R+53.9 · modeled estimate
Runner-up · Donald Trump, 2020 · 75.7%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
9,490votes
35.2% of the vote · R+28.4 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 9,411 votes
Republican
Donald Trump2020
23,748votes
75.7% of the vote · R+53.1 · modeled estimate
Runner-up · Donald Trump, 2024 · 23,512 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
Alton B. Parker1904
+2.9pts D vs U.S.
Place R+16.7 · U.S. R+19.7 · modeled estimate
Runner-up · John W. Davis, 1924 · +2.8 pts
Republican
Donald Trump2020
+57.6pts R vs U.S.
Place R+53.1 · U.S. D+4.5 · modeled estimate
Runner-up · Donald Trump, 2016 · +56.2 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 |
|---|---|---|---|---|
| 2024 | R | 23.1%4,433 | 76.9%14,748 | 19,181 |
| 2020 | R | 23.4%4,400 | 76.6%14,429 | 18,829 |
With a 2024 presidential margin of R+53.9, this district ranks among the most heavily one-sided state house seats in Indiana, suggesting a rural or small-town electorate with deeply uniform partisan preferences.
Across the recorded series it reached a Democratic high of 20.2 points in 1912 and a Republican high of 54.1 points in 2016. Between 2020 and 2024 the district moved 0.8 points toward the Republican candidate; the 2024 margin was 53.9 points.
A population of 68,169, a 87% non-Hispanic-white share, and a median household income of $77,958 describe the district. The district's voting pattern over the last decade is most similar to that of State House District 50 and State House District 22.
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 18th State House District. Akashic. https://akashic.app/sld-lower/18018/. Accessed May 20, 2026. License: CC BY 4.0.