Akashic
1892–2024
Akashic
Idaho 15th State Senate District
presidential margin
2008R+13.42012R+17.22016R+14.32020R+4.92024R+5.1
full record · 2008 → 2024
R+5.1
2024
median income$83,451U.S. $80,734 · ID $77,800
median age40.4U.S. 39.1 · ID 37.6
poverty rate8.3%U.S. 12.5% · ID 10.7%
bachelor’s+ (25+)44.6%U.S. 35.6% · ID 31.8%
non-english9.3%U.S. 22.3% · ID 11.0%
race · ethnicity · ancestry
English19.6%
German17.8%
Irish11.3%
Mexican7.1%
Spanish0.5%
Puerto Rican0.4%
Aztec0.5%
Asian Indian0.7%
Chinese0.6%
Filipino0.4%
African American†2.1%
African0.4%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See Ada County.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Idaho 15th State Senate District

Akashic
Idaho 15th State Senate DistrictTrumpR+5.1
2024
2024 presidential margin for Idaho 15th State Senate DistrictThe boundary of Idaho 15th State Senate District, filled by its 2024 presidential margin (R+5.1), over faint outlines of the counties it is drawn from.Idaho 15th State Senate District · R+5.1
How it voted
Share of the 2024 vote
Donald Trump ✓Republican51.0%12,891
Kamala HarrisDemocratic45.9%11,600
Robert F. Kennedy Jr.Independent3.0%765
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 1 county it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (1 county) — table
2024 presidential result by county for Idaho 15th State Senate District — winner and D-vs-R margin.
CountyWinnerMargin
Ada County, IDRepublicanR+10.3
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
R
45.9%Harris11,600
51.0%Trump12,891
3.0%Kennedy765
−5.1%
25,256
R
45.8%Biden12,104
50.7%Trump13,409
3.5%Jorgensen932
−4.9%
26,445
R
35.5%Clinton7,651
49.9%Trump10,739
14.6%McMullin3,137
−14.3%
21,527
R
41.4%Obama8,391
58.6%Romney11,870
0.0%
−17.2%
20,261
R
42.2%Obama8,964
55.6%McCain11,808
2.1%Nader449
−13.4%
21,221
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: −5.1% in 2024.−5.1%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008−13.4%
2012−17.2%
2016−14.3%
2020−4.9%
2024−5.1%
DemocraticRepublican
current representation
Current officeholders
RCodi GallowayState Senate · 15

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

With a 2024 presidential margin exceeding 54 points Republican, this 52,000-resident district ranks among the most reliably one-sided in Idaho's upper chamber, leaving general-election competition largely absent from recent cycles.

Across the recorded series it reached a Republican high of 17.2 points in 2012. The 2024 margin was 5.1 points.

A population of 52,475, a 80% non-Hispanic-white share, and a median household income of $83,451 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 10 and State Senate District 35.

Political twins — state-senate districts

The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

State Senate District 10
Kansas
85.5twin score
12-yr trend2008–2012 trajectoryelasticity≠ college share
State Senate District 35
Kansas
85.1twin score
elasticity2008–2016 trajectory% White≠ 12-yr trend
State Senate District 17
Utah
84.0twin score
% Black2016 margin% White≠ 12-yr trend

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.
Idaho 15th State Senate District. Akashic. https://akashic.app/sld-upper/16015/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
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Frequently asked questions

How did Idaho 15th State Senate District vote in 2024?
In 2024, Idaho 15th State Senate District voted Republican by 5.1 points (R+5.1), carried by the Republican candidate. Out of 25,256 votes cast, 11,600 went Democratic and 12,891 went Republican.
How many people live in Idaho 15th State Senate District?
Idaho 15th State Senate District has a population of 52,475 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Idaho 15th State Senate District?
Median household income in Idaho 15th State Senate District is $83,451 — above the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Idaho 15th State Senate District?
Akashic tracks 5 presidential elections in Idaho 15th State Senate District from 2008 to 2024. Of those, 0 went Democratic and 5 went Republican.