- Lead
- 20,501
- Total
- 54,455
- vs nation
- R+36.2
Indiana 9th State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 20,121
- Total
- 56,157
- vs nation
- R+40.3
- Lead
- 20,695
- Total
- 51,771
- vs nation
- R+42.1
- Lead
- 18,517
- Total
- 49,656
- vs nation
- R+41.1
- Lead
- 11,423
- Total
- 50,895
- vs nation
- R+29.7
- Lead
- 20,410
- Total
- 47,982
- vs nation
- R+40.1
- Lead
- 16,490
- Total
- 42,627
- vs nation
- R+39.2
- Lead
- 10,433
- Total
- 40,546
- vs nation
- R+34.3
Key facts
- 2024 presidential margin
- R+37.6MIT Election Lab
- Population
- 133,6262024 5-year
- Population density
- 246 / sq mi2024 5-year · TIGER/Line
- Land area
- 543 sq miTIGER/Line
- Median household income
- $71,3952024 5-year
- White (non-Hispanic)
- 83.7%2024 5-year
- Black
- 2.8%2024 5-year
- Hispanic / Latino
- 7.9%2024 5-year
- Peak Democratic margin
- D+12.3 in 1912MIT Election Lab
- Peak Republican margin
- R+49.0 in 1972MIT Election Lab
- Most similar
- State Senate District 17, IN · twin score 89.8
presidential history
Party record book
Indiana 9th State Senate 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
48.1%
18,075 votes · R+3.0 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 47.8%
Republican
Richard Nixon1972
74.3%
30,650 votes · R+49.0 · modeled estimate
Runner-up · Ronald Reagan, 1984 · 71.0%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Barack Obama2008
19,340votes
38.0% of the vote · R+22.4 · modeled estimate
Runner-up · Lyndon B. Johnson, 1964 · 18,075 votes
Republican
Donald Trump2020
37,532votes
66.8% of the vote · R+35.8 · modeled estimate
Runner-up · Donald Trump, 2024 · 36,976 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
James M. Cox1920
−4.4pts D vs U.S.
Place R+30.6 · U.S. R+26.2 · modeled estimate
Runner-up · John W. Davis, 1924 · −4.9 pts
Republican
Donald Trump2016
+42.1pts R vs U.S.
Place R+40.0 · U.S. D+2.1 · modeled estimate
Runner-up · Mitt Romney, 2012 · +41.1 pts
Current officeholders
State legislative officeholder from OpenStates nightly current-legislator data.
With a 37.6-point Republican presidential margin, this north-central Indiana district ranks among the state's most reliably one-sided constituencies, leaving little competitive ground for statewide or legislative challengers.
Across the recorded series it reached a Democratic high of 12.3 points in 1912 and a Republican high of 49.0 points in 1972. Between 2020 and 2024 the district moved 1.8 points toward the Republican candidate; the 2024 margin was 37.6 points.
A population of 133,626, a 84% non-Hispanic-white share, and a median household income of $71,395 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 17 and State Senate District 13.
The state-senate 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 9th State Senate District. Akashic. https://akashic.app/sld-upper/18009/. Accessed May 20, 2026. License: CC BY 4.0.