HarrisDemocratic30.4%274,972TrumpRepublican66.9%605,246KennedyIndependent1.4%12,812
R+36.5- Lead
- 330,274
- Total
- 905,057
- vs nation
- R+35.0
- Turnout
- 65.0%
Key facts
- 2024 presidential margin
- R+36.5MIT Election Lab
- Population
- 1,934,2622024 5-year
- Population density
- 23 / sq mi2024 5-year · TIGER/Line
- Land area
- 82,645 sq miTIGER/Line
- Median household income
- $77,8002024 5-year
- White (non-Hispanic)
- 78.6%2024 5-year
- Black
- 0.7%2024 5-year
- Hispanic / Latino
- 13.6%2024 5-year
- Peak Democratic margin
- D+56.8 in 1896MIT Election Lab
- Peak Republican margin
- R+46.0 in 1984MIT Election Lab
- Most similar
- Wyoming, WY · twin score 93.7
Midterm durability
Total general-election participants divided by same-year citizen voting-age population. These are total ballots or participating voters—not presidential candidate votes.
- 2024 total turnout
- 65.0%917,469 participants ÷ 1,411,147 CVAP
- 2020→2022 drop-off
- +25.7 ptsPresidential-dependent
- Drop-off versus state
- 0.0 ptsPositive means a larger decline than the statewide pattern
- Mechanical 2026 scenario
- 39.3%–46.9%Recent-cycle and two-cycle persistence scenarios; not a forecast
| Election | Participants | CVAP | Turnout | Quality |
|---|---|---|---|---|
| 2016 · Presidential | 710,495 | 1,148,895 | 61.8% | B/A |
| 2018 · Midterm | 612,582 | 1,192,742 | 51.4% | B/A |
| 2020 · Presidential | 878,527 | 1,255,411 | 70.0% | B/A |
| 2022 · Midterm | 595,350 | 1,344,940 | 44.3% | B/A |
| 2024 · Presidential | 917,469 | 1,411,147 | 65.0% | B/A |
Sources and methods
- 2016: numerator source 158, denominator source 157; total voters participating; eavs-f1a-state-v1:observed:aggregated; allocation share 0.0%; series 276/110.
- 2018: numerator source 158, denominator source 157; total voters participating; eavs-f1a-state-v1:observed:aggregated; allocation share 0.0%; series 279/137.
- 2020: numerator source 158, denominator source 157; total voters participating; eavs-f1a-state-v1:observed:aggregated; allocation share 0.0%; series 282/1.
- 2022: numerator source 158, denominator source 157; total voters participating; eavs-f1a-state-v1:observed:aggregated; allocation share 0.0%; series 285/182.
- 2024: numerator source 158, denominator source 157; total voters participating; eavs-f1a-state-v1:observed:aggregated; allocation share 0.0%; series 288/227.
presidential history
Party record book
Idaho · the strongest Democratic and Republican presidential performances recorded here, measured three ways.
1892–2024 · 34 presidential cycles
Highest vote share
Largest share of the presidential candidate vote cast here.
Democratic
William J. Bryan1896
78.1%
23,192 votes · D+56.8
Runner-up · Franklin D. Roosevelt, 1936 · 63.0%
Republican
Ronald Reagan1984
72.4%
297,523 votes · R+46.0
Runner-up · George W. Bush, 2004 · 68.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
287,021votes
33.1% of the vote · R+30.8
Runner-up · Kamala Harris, 2024 · 274,972 votes
Republican
Donald Trump2024
605,246votes
66.9% of the vote · R+36.5
Runner-up · Donald Trump, 2020 · 554,119 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
William J. Bryan1896
+62.9pts D vs U.S.
Place D+56.8 · U.S. R+6.1
Runner-up · William J. Bryan, 1900 · +11.3 pts
Republican
Benjamin Harrison1892
+45.8pts R vs U.S.
Place R+44.2 · U.S. D+1.7 · a third-party candidate carried the Place
Runner-up · George W. Bush, 2000 · +40.1 pts
2026 election
On the ballot
Governor
Brad LittlenomineeTerri PickensnomineeJohn Stegner
Incumbent Brad Little (R) won the May 19 primary (~59%) for a third term; Democrat Terri Pickens won her primary (~61%). Notable independent: retired Idaho Supreme Court Justice John Stegner is a confirmed general-election candidate (strong fundraising). Minor general-election candidates also include a Libertarian, an independent, and a Constitution Party candidate.
U.S. Senate
Jim RischnomineeTodd AchillesnomineeDavid RothnomineeMatt Loesbynominee
Primary held May 19, 2026. Incumbent Jim Risch (R) is seeking a fourth term and won the GOP nomination (~67.3%). David Roth (D, 2022 nominee) won the Democratic primary (~61.9%). Matt Loesby is the Libertarian nominee. Independents Todd Achilles (former Democratic state representative) and Natalie Fleming qualified for the Nov 3 general-election ballot via petition.
U.S. House elections · 50 House
Senate and governor results are in the Office selector at the top of this page.
U.S. House
| Year | Seats won | D % | R % | Total |
|---|---|---|---|---|
| R 2 | 28.0% | 66.5% | 873,704 | |
| R 2 | 31.0% | 67.7% | 583,628 | |
| R 2 | 30.1% | 66.1% | 849,909 | |
| R 2 | 34.8% | 61.8% | 595,724 |
voter registration
Registered voters
By party of registration, over time
Party registration · 2024R+46.4
Presidential vote · 2024R+36.5
Registration leans Republican; the presidential vote runs 9.9 points more Democratic than the rolls.
DemocraticRepublicanUnaffiliatedOther parties
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2018 | 846,433 | 103,501 | 433,305 | 299,092 | 10,535 |
| 2020 | 1,010,991 | 141,842 | 532,049 | 322,983 | 14,117 |
| 2022 | 1,006,180 | 130,637 | 580,188 | 279,957 | 15,398 |
| 2024 | 1,069,711 | 136,278 | 632,320 | 284,608 | 16,505 |
domestic migration
Who moves in and out
Net domestic migration over time
+19,915 net domestic migration · 2025
20112025
Net +244,498 over 2011–2025 · gain loss
| Year | Net domestic migration |
|---|---|
| 2011 | +528 |
| 2012 | −718 |
| 2013 | +3,543 |
| 2014 | +8,482 |
| 2015 | +6,763 |
| 2016 | +18,541 |
| 2017 | +25,007 |
| 2018 | +24,020 |
| 2019 | +27,360 |
| 2021 | +52,350 |
| 2022 | +28,019 |
| 2023 | +14,713 |
| 2024 | +15,975 |
| 2025 | +19,915 |
Two recreation counties — Sun Valley’s Blaine and the Tetons’ Teton — are the whole of the Democratic map in a state Trump carried by 36.5 points.
- Reddest and widening
- R+30.8 (2020) → R+36.5 (2024) — moving away from competitive as the nation shifted ~6 pts to Trump · MIT Election Lab
- The Latter-day Saint east
- Franklin R+77.6, Bear Lake R+77.1, Oneida R+75.9 — the deepest Republican ground, along the Utah line · MIT Election Lab 2024
- 2nd-largest LDS share
- 22.1% Latter-day Saints — 2nd of 50, behind only Utah; 50.2% claim no affiliation · 2020 U.S. Religion Census
- The whole Democratic map
- Only Blaine (Sun Valley, D+31.7) and Teton (D+6.8) of 44 counties — both recreation, not agriculture · MIT Election Lab 2024
- Boise the least-red big county
- Ada County (Boise, ~⅓ of the vote) R+10.3; Latah (U. of Idaho, Moscow) R+8.0 — nearest of all, still Republican · MIT Election Lab 2024
- Two races in 2026
- Gov. Little (R) vs Pickens (D) and ind. Stegner; Sen. Risch (R) vs Roth (D) — May 19 primary · Akashic 2026 forecast
Political twins — states
The states whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Wyoming
Wyoming
93.7twin score
2000–2012 trajectory≠ population scale
Kansas
Kansas
80.3twin score
2004–2016 trajectory≠ 12-yr trend
Nebraska
Nebraska
75.6twin score
2000–2016 trajectory≠ Scottish ancestry
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. Akashic. https://akashic.app/state/ID/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Embed this page
A live widget for your site — no API key, attribution built in, CC BY 4.0. All widgets & sizes →
Idaho at the ballot boxAll elections →
Places within Idaho
Frequently asked questions
How did Idaho vote in 2024?
In 2024, Idaho voted Republican by 36.5 points (R+36.5), carried by the Republican candidate. Out of 905,057 votes cast, 274,972 went Democratic and 605,246 went Republican.
When did Idaho last vote Democratic?
The most recent presidential election in which Idaho voted Democratic was 1964.
How many people live in Idaho?
Idaho has a population of 1,934,262 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Idaho?
Median household income in Idaho is $77,800 — below the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Idaho?
Akashic tracks 34 presidential elections in Idaho from 1892 to 2024. Of those, 9 went Democratic and 23 went Republican.