Boise · 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
75.3%
6,728 votes · D+51.6
Runner-up · Franklin D. Roosevelt, 1936 · 59.0%
Republican
Ronald Reagan1984
73.4%
116,383 votes · R+48.1
Runner-up · Herbert Hoover, 1928 · 70.4%
Most votes
Largest number of votes cast for the party’s presidential nominee here.
Democratic
Joe Biden2020
163,054votes
38.9% of the vote · R+19.0
Runner-up · Kamala Harris, 2024 · 157,473 votes
Republican
Donald Trump2024
269,235votes
61.4% of the vote · R+25.5
Runner-up · Donald Trump, 2020 · 242,557 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
+57.7pts D vs U.S.
Place D+51.6 · U.S. R+6.1
Runner-up · William J. Bryan, 1900 · +8.3 pts
Republican
Benjamin Harrison1892
+38.5pts R vs U.S.
Place R+36.8 · U.S. D+1.7 · a third-party candidate carried the Place
Runner-up · George W. Bush, 2000 · +36.5 pts
U.S. House elections · 3 House
Senate and governor results are in the Office selector at the top of this page.
U.S. House
On a multi-state Place, each row sums votes cast in the separate U.S. House races held inside the Place that year. It is a geographic vote total, not one contest or a seat tally.
Boise · how this place’s counties split between candidates in each party’s presidential nominating contest, cycle by cycle. A primary is a contest inside one party, so it has no Democratic–Republican margin and is not part of the general-election record above.
Akashic reports votes cast, not delegates awarded. The two can disagree: Clinton led the 2008 national primary popular vote by less than half a point and did not win the nomination.
Primary returns are published at county grain and there is no roll-up above it. Each cell counts how many of this place’s counties a candidate led — a count of records, not a vote total. Who led the place as a whole is not knowable from these returns, because county rows carry a leader and a lead but no per-candidate votes.
Presidential nominating contests in Boise, by party and cycle.
Party
2008
2012
2016
2020
2024
Democratic
Obama11Clinton113,049 votes · 12 of 12 countiescaucus + primary
○no contest record
Sanders1213,201 votes · 12 of 12 countiescaucus + primary
Biden10Sanders261,721 votes · 12 of 12 countiesprimary
○no contest record
Republicannot ingested
○no contest record
○no contest record
○no contest record
○no contest record
○no contest record
○no contest record — Akashic holds no result for that party and cycle here. It is not a claim that no contest was held. Telling apart a contest that was cancelled, one that went uncontested, and one simply not yet ingested needs a nominating-contest calendar, which is a separate ingest from results and does not exist yet.
Republican presidential primaries are not yet ingested — the Republican series runs from 1856 and is in scope. The row is kept so its absence is visible: a Democratic-only panel would otherwise read as though no one else held a contest.
Akashic carries 10 states for 2012 and 3 states for 2024. Cycles in which an incumbent president seeks renomination are thin by nature — few states run a contested primary — so a sparse column is politics, not a hole in the record.
County returns carry a leader and a lead over the runner-up, and nothing more. The full candidate field with vote shares is published at state grain — follow a cycle above to the state contest for it.
voter registration
Registered voters
By party of registration, over time
Party registration · 2024R+38.6
vs
Presidential vote · 2024R+25.5
Registration leans Republican; the presidential vote runs 13 points more Democratic than the rolls.
DemocraticRepublicanUnaffiliatedOther parties
† Some years predate full county coverage; a flagged year sums only the counties reporting it.
Voter registration in Boise
Year
Total registered
Democratic
Republican
Unaffiliated
Other
2018 (partial)
392,651
59,082
183,800
144,484
5,285
2020 (partial)
476,521
80,375
228,068
161,107
6,971
2022
500,685
77,825
264,260
150,107
8,493
2024
533,095
81,918
287,430
154,665
9,082
domestic migration
Who moves in and out
Net domestic migration over time
+14,075 net domestic migration · 2025
20112025
Net +161,621 over 2011–2025 · gain loss
Domestic migration in Boise in Boise: net domestic migration by year
Year
Net domestic migration
2011
+2,273
2012
+3,753
2013
+5,762
2014
+7,943
2015
+5,648
2016
+11,998
2017
+15,240
2018
+16,998
2019
+17,345
2021
+27,887
2022
+12,963
2023
+9,148
2024
+10,588
2025
+14,075
The Boise media market anchors Idaho's most populous corridor, where rapid in-migration from California and the Pacific Northwest has introduced new demographic pressures into a region that has voted reliably Republican at the statewide level for decades.
Across the recorded series it reached a Democratic high of 51.6 points in 1896 and a Republican high of 48.1 points in 1984. Between 2020 and 2024 the market moved 6.5 points toward the Republican candidate; the 2024 margin was 25.5 points.
A population of 928,560, a 76% non-Hispanic-white share, and a median household income of $82,738 describe the market. The market's voting pattern over the last decade is most similar to that of Idaho Falls-Pocatello (Jackson) and Twin Falls.
Akashic
Political twins — media markets
The media markets 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 →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Boise, Idaho. Akashic. https://akashic.app/dma/757/. Accessed May 20, 2026. License: CC BY 4.0.
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In 2024, Boise, Idaho voted Republican by 25.5 points (R+25.5), carried by the Republican candidate. Out of 438,511 votes cast, 157,473 went Democratic and 269,235 went Republican.
When did Boise, Idaho last vote Democratic?
The most recent presidential election in which Boise, Idaho voted Democratic was 1940.
How many people live in Boise, Idaho?
Boise, Idaho has a population of 928,560 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Boise, Idaho?
Median household income in Boise, Idaho is $82,738 — above the national median of $80,734. The Idaho state median is $77,800.
What is the political history of Boise, Idaho?
Akashic tracks 34 presidential elections in Boise, Idaho from 1892 to 2024. Of those, 6 went Democratic and 26 went Republican.
