How Idaho has voted since 1960

Idaho has 4 electoral votes in 2028, and at the current pace of population change it would gain one electoral vote after the 2030 census. Since 1960 it has voted Democratic once and Republican 16 times. It has backed the national winner in 10 of 17 elections. Donald Trump carried it in 2024 by 36.5 points, 35.0 points more Republican than the nation. In 2024, 64.2% of its eligible voters cast a ballot, ranking 29th among the 50 states and DC (nationally, 64.3%). It has voted Republican in every election since 1968. Its closest result was in 1964, when Lyndon B. Johnson won it by 1.8 points.

  1. 1960Nixon+7.6
  2. 1964Johnson+1.8
  3. 1968Nixon+26.1
  4. 1972Nixon+38.2
  5. 1976Ford+22.8
  6. 1980Reagan+41.3
  7. 1984Reagan+46.0
  8. 1988Bush+26.1
  9. 1992Bush+13.6
  10. 1996Dole+18.5
  11. 2000Bush+39.5
  12. 2004Bush+38.1
  13. 2008McCain+25.4
  14. 2012Romney+31.9
  15. 2016Trump+31.8
  16. 2020Trump+30.8
  17. 2024Trump+36.5

Each box is one election: the winner in Idaho and the margin in points. Darker boxes were won by 10 points or more, lighter by under 5.

Election night

10 p.m. ET

Polls close at 10 p.m. ET (8 p.m. Mountain); in the northern Panhandle (Pacific Time) they close at 11 p.m. ET.

Also closing at 10 p.m. ET: MT, NV, UT.

Times from the 2024 general election; states rarely change them, and they will be confirmed for 2028.

2028 ratings

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In Congress

Senate

House: 2 Republicans

All 2 members
  1. 1 Russ Fulcher (R)
  2. 2 Michael K. Simpson (R)

From Congress.gov, as of Sept. 28, 2026. Vacant seats are not listed.

Margin by election

Idaho margin by electionBars show the Democratic or Republican margin in Idaho in each election since 1960; the line shows the national popular-vote margin. The table below has every figure.R+50R+30R+10D+10D+30D+501960: R+7.6 (nation D+0.2)'601964: D+1.8 (nation D+22.6)'641968: R+26.1 (nation R+0.7)'681972: R+38.2 (nation R+23.2)'721976: R+22.8 (nation D+2.1)'761980: R+41.3 (nation R+9.7)'801984: R+46.0 (nation R+18.2)'841988: R+26.1 (nation R+7.7)'881992: R+13.6 (nation D+5.6)'921996: R+18.5 (nation D+8.5)'962000: R+39.5 (nation D+0.5)'002004: R+38.1 (nation R+2.5)'042008: R+25.4 (nation D+7.3)'082012: R+31.9 (nation D+3.9)'122016: R+31.8 (nation D+2.1)'162020: R+30.8 (nation D+4.5)'202024: R+36.5 (nation R+1.5)'24

Idaho margin National popular vote

By county

Donald Trump won 42 of Idaho's 44 counties in 2024; Kamala Harris won 2.

Loading the county map…

Largest counties, 2024

CountyVotesMarginShift from 2020
Ada County267,419R+10.3→R 6.4
Canyon County101,030R+46.6→R 6.9
Kootenai County96,365R+51.8→R 8.8
Bonneville County56,436R+45.4→R 1.7
Bannock County39,976R+25.1→R 3.2
Twin Falls County37,383R+48.8→R 3.6
Bonner County29,710R+46.1→R 9.3
Bingham County20,651R+59.6→R 3.7
Latah County20,461R+8.0→R 11.7
Nez Perce County20,135R+38.6→R 5.0

Biggest shifts from 2020 to 2024: toward the Republican, Latah County (11.7), Bonner County (9.3), Kootenai County (8.8); toward the Democrat, Oneida County (1.5), Caribou County (1.2), Custer County (1.0) — in points of margin.

County returns from the MIT Election Data and Science Lab (official state data), 2000–2024. Margin is the Democrat's share minus the Republican's, of all votes cast.

Results by year

YearWinnerDemocratRepublicanOtherMarginNationTurnoutEV
2024 Donald TrumpTrumpHarris 30.4%274,972Trump 66.9%605,2462.8%R+36.5R+1.564.2%4
2020 Donald TrumpTrump lostBiden 33.1%287,021Trump 63.8%554,1193.1%R+30.8D+4.564.9%4
2016 Donald TrumpTrumpClinton 27.5%189,765Trump 59.3%409,05513.3%R+31.8D+2.160.8%4
2012 Mitt RomneyRomney lostObama 32.6%212,787Romney 64.5%420,9112.9%R+31.9D+3.961.1%4
2008 John McCainMcCain lostObama 36.1%236,440McCain 61.5%403,0122.4%R+25.4D+7.364.8%4
2004 George W. BushBushKerry 30.3%181,098Bush 68.4%409,2351.4%R+38.1R+2.564.9%4
2000 George W. BushBushGore 27.6%138,637Bush 67.2%336,9375.2%R+39.5D+0.559.0%4
1996 Bob DoleDole lostClinton 33.7%165,443Dole 52.2%256,595Perot 12.7%R+18.5D+8.561.6%4
1992 George H.W. BushBush lostClinton 28.4%137,013Bush 42.0%202,645Perot 27.1%R+13.6D+5.666.9%4
1988 George H.W. BushBushDukakis 36.0%147,272Bush 62.1%253,8811.9%R+26.1R+7.763.1%4
1984 Ronald ReaganReaganMondale 26.4%108,510Reagan 72.4%297,5231.3%R+46.0R+18.263.6%4
1980 Ronald ReaganReaganCarter 25.2%110,192Reagan 66.5%290,699Anderson 6.2%R+41.3R+9.770.4%4
1976 Gerald FordFord lostCarter 37.1%126,549Ford 59.9%204,1513.0%R+22.8D+2.1—4
1972 Richard NixonNixonMcGovern 26.0%Nixon 64.2%9.7%R+38.2R+23.2—4
1968 Richard NixonNixonHumphrey 30.7%Nixon 56.8%Wallace 12.6%R+26.1R+0.7—4
1964 Lyndon B. JohnsonJohnsonJohnson 50.9%Goldwater 49.1%0.0%D+1.8D+22.6—4
1960 Richard NixonNixon lostKennedy 46.2%Nixon 53.8%0.0%R+7.6D+0.2—4

Margin is the Democrat's share minus the Republican's, in percentage points; Nation is the same for the national popular vote. "Other" is everyone else combined, or the leading third-party candidate where one took 5% or more. Vote counts from 1976. Turnout is ballots cast as a share of eligible voters, from 1980 (UF Election Lab; the newest year is preliminary).

Electoral votes

Electoral votes change after each census, when House seats are reapportioned.

  • 419601950 census
  • 41964–19681960 census
  • 41972–19801970 census
  • 41984–19881980 census
  • 41992–20001990 census
  • 42004–20082000 census
  • 42012–20202010 census
  • 42024–20282020 census
  • 52032–2040projected

Projected: Idaho's share of House seats after the 2030 census if each state's population keeps changing at its pace since 2020, from the Census Bureau's 2024 American Community Survey population estimates (July 1, 2024). If the count were taken today it would have 5. An estimate, not a forecast.

Before 1960

Idaho cast electoral votes in 17 presidential elections before 1960, the first in 1892. It backed the eventual president in 14 of them.

YearCarried byElectorsMarginBacked winner
1956Dwight D. Eisenhower Republican4+22.4✓
1952Dwight D. Eisenhower Republican4+31.0✓
1948Harry S. Truman Democratic4+2.8✓
1944Franklin D. Roosevelt Democratic4+3.5✓
1940Franklin D. Roosevelt Democratic4+9.1✓
1936Franklin D. Roosevelt Democratic4+31.0✓
1932Franklin D. Roosevelt Democratic4+21.1✓
1928Herbert Hoover Republican4+30.6✓
1924Calvin Coolidge Republican4+10.6✓
1920Warren G. Harding Republican4+32.1✓
1916Woodrow Wilson Democratic4+11.7✓
1912Woodrow Wilson Democratic4+1.1✓
1908William Howard Taft Republican3+18.5✓
1904Theodore Roosevelt Republican3+44.2✓
1900William Jennings Bryan Democratic3+1.9–
1896William Jennings Bryan Democratic-Populist3+57.1–
1892James B. Weaver Populist3+10.0–

Margin: the winner's lead over the runner-up in the state's popular vote, in points. A dash means the legislature chose the electors (common before the 1830s) or no popular vote is on record. Each year links to that election's map and full results.