- Lead
- 4,932
- Total
- 68,552
- vs nation
- R+5.7
Indiana 1st State Senate District
President margin by year
Place winner margin
President results by year
Modeled candidate-vote estimate on current district boundaries
- Lead
- 749
- Total
- 69,713
- vs nation
- R+5.5
- Lead
- 712
- Total
- 60,549
- vs nation
- R+3.3
- Lead
- 5,457
- Total
- 58,857
- vs nation
- D+5.4
- Lead
- 7,796
- Total
- 60,407
- vs nation
- D+5.6
- Lead
- 312
- Total
- 55,550
- vs nation
- D+3.0
- Lead
- 1,982
- Total
- 51,256
- vs nation
- D+3.3
- Lead
- 5,921
- Total
- 47,397
- vs nation
- D+4.0
Key facts
- 2024 presidential margin
- R+7.2MIT Election Lab
- Population
- 136,4052024 5-year
- Population density
- 1,977 / sq mi2024 5-year · TIGER/Line
- Land area
- 69 sq miTIGER/Line
- Median household income
- $86,3512024 5-year
- White (non-Hispanic)
- 66.8%2024 5-year
- Black
- 12.3%2024 5-year
- Hispanic / Latino
- 15.0%2024 5-year
- Peak Democratic margin
- D+12.9 in 2008MIT Election Lab
- Peak Republican margin
- R+63.6 in 1920MIT Election Lab
- Most similar
- State Senate District 12, MI · twin score 77.1
presidential history
Party record book
Indiana 1st 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
Barack Obama2008
55.8%
33,716 votes · D+12.9 · modeled estimate
Runner-up · Franklin D. Roosevelt, 1936 · 55.0%
Republican
Warren G. Harding1920
77.3%
10,186 votes · R+63.6 · modeled estimate
Runner-up · Calvin Coolidge, 1924 · 73.5%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
33,991votes
48.8% of the vote · R+1.1 · modeled estimate
Runner-up · Barack Obama, 2008 · 33,716 votes
Republican
Richard Nixon1972
44,304votes
67.0% of the vote · R+34.6 · modeled estimate
Runner-up · Ronald Reagan, 1980 · 36,589 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
Walter Mondale1984
+6.2pts D vs U.S.
Place R+12.0 · U.S. R+18.2 · modeled estimate
Runner-up · Barack Obama, 2008 · +5.6 pts
Republican
Warren G. Harding1920
+37.4pts R vs U.S.
Place R+63.6 · U.S. R+26.2 · modeled estimate
Runner-up · Charles E. Hughes, 1916 · +36.8 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 | D | 57.3%31,669 | 42.7%23,586 | 55,255 |
Anchoring Indiana's northwestern corner near Lake Michigan's industrial shoreline, this district returned a 7.2-point Republican presidential margin in 2024, reflecting a voter base that has trended decisively away from its mid-century Democratic labor roots.
Across the recorded series it reached a Democratic high of 12.9 points in 2008 and a Republican high of 63.6 points in 1920. Between 2020 and 2024 the district moved 6.1 points toward the Republican candidate; the 2024 margin was 7.2 points.
A population of 136,405, a 67% non-Hispanic-white share, and a median household income of $86,351 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 12 and State Senate District 18.
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 1st State Senate District. Akashic. https://akashic.app/sld-upper/18001/. Accessed May 20, 2026. License: CC BY 4.0.