state senate districtIndiana 15th State Senate District
presidential margin
2004–2024 · Democratic minus Republican
2004R+37.9
2008R+15.9
2012R+27.7
2016R+27.4
2020R+17.1
2024R+16.8
net swing · 2004→2024D+21.1R+37.9 → R+16.8
vs. U.S. · 2024R+15.3R+16.8 vs R+1.5
presidential returns
2024 turnout 64.3% of 102,965 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
26,834
37,930
1,410
66,174
102,965
64.3%
2020
27,385
39,031
1,515
67,931
98,631†
68.9%
2016
19,637
35,934
3,806
59,377
95,381†
62.3%
2012
20,240
36,171
1,013
57,424
92,226†
62.3%
2008
24,185
33,398
463
58,046
90,559†
64.1%
2004
15,839
35,326
247
51,412
88,893†
57.8%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupIN SD 15IndianaUnited States
German28.4%19.5%12.5%
English11.1%11.3%9.5%
Irish10.5%10.1%9.4%
American5.8%6.9%5.3%
French3.0%1.3%1.6%
Italian2.5%2.4%4.8%
Polish2.4%2.6%2.2%
Scottish2.0%1.5%1.3%
African American†6.7%7.7%9.9%
African0.3%0.5%0.5%
Mexican3.9%5.7%11.3%
Guatemalan0.5%0.2%0.5%
Puerto Rican0.4%0.8%1.8%
Salvadoran0.2%0.2%0.7%
Burmese1.8%0.4%—
Asian Indian0.5%0.8%1.4%
Filipino0.4%0.2%0.9%
Chinese0.3%0.4%1.3%
Vietnamese0.3%—0.6%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
IN SD 15
Indiana
United States
Median age
36.5
38.2
39.1
Age 18–24
9.0%
9.6%
9.2%
Age 65 and older
15.6%
16.7%
17.2%
Household economy
Measure
IN SD 15
Indiana
United States
Median household income
$79,896
$71,957
$84,427
Poverty rate
8.3%
12.4%
12.5%
Bachelor's degree or higher (25+)
31.6%
29.7%
35.6%
Languages at home
Measure
IN SD 15
Indiana
United States
Speaks a non-English language at home
12.4%
10.4%
22.3%
Spanish
5.6%
5.5%
13.6%
German or other West Germanic
1.2%
1.1%
0.5%
Other Asian & Pacific Island
2.6%
0.8%
1.1%
Religious landscape
Measure
IN SD 15
Indiana
United States
Catholic
—
11.5%
18.6%
Evangelical Protestant
—
18.0%
16.5%
Unclaimed / not counted
—
57.9%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Indiana 15th State Senate District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−37.9%
2008
−15.9%
2012
−27.7%
2016
−27.4%
2020
−17.1%
2024
−16.8%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
40.6%Harris26,834
57.3%Trump37,930
2.1%
R+16.8
D+0.4
R+15.3
66,174
R
40.3%Biden27,385
57.5%Trump39,031
2.2%
R+17.1
D+10.3
R+21.6
67,931
R
33.1%Clinton19,637
60.5%Trump35,934
6.4%
R+27.4
D+0.3
R+29.5
59,377
R
35.2%Obama20,240
63.0%Romney36,171
1.8%
R+27.7
R+11.9
R+31.6
57,424
R
41.7%Obama24,185
57.5%McCain33,398
0.8%
R+15.9
D+22.0
R+23.1
58,046
R
30.8%Kerry15,839
68.7%Bush35,326
0.5%
R+37.9
—
R+35.4
51,412
current representation
Current officeholders
RLiz BrownState Senate · 15
State legislative officeholder from OpenStates nightly current-legislator data.
With a 52-point Republican presidential margin, this district ranks among the state's most reliably one-sided constituencies. Legislative races here rarely draw competitive general-election contests, making primary turnout the dominant electoral force.
Across the recorded series it reached a Republican high of 37.9 points in 2004. The 2024 margin was 16.8 points.
A population of 138,252, a 78% non-Hispanic-white share, and a median household income of $79,896 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 16 and State Senate District 32.
Akashic
Political twins — state-senate districts
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.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Indiana 15th State Senate District. Akashic. https://akashic.app/sld-upper/18015/. Accessed May 20, 2026. License: CC BY 4.0.
How did Indiana 15th State Senate District vote in 2024?
In 2024, Indiana 15th State Senate District voted Republican by 16.8 points (R+16.8), carried by the Republican candidate. Out of 66,174 votes cast, 26,834 went Democratic and 37,930 went Republican.
How many people live in Indiana 15th State Senate District?
Indiana 15th State Senate District has a population of 138,252 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Indiana 15th State Senate District?
Median household income in Indiana 15th State Senate District is $79,896 — below the national median of $80,734. The Indiana state median is $71,957.
What is the political history of Indiana 15th State Senate District?
Akashic tracks 6 presidential elections in Indiana 15th State Senate District from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
