The 2016 United States presidential election in Idaho was held on Tuesday, November 8, 2016, as part of the 2016 United States presidential election in which all 50 states plus the District of Columbia participated. Idaho voters chose electors to represent them in the Electoral College via a popular vote, pitting the Republican nominee, businessman Donald Trump, and running mate Indiana Governor Mike Pence against Democratic Party nominee, former Secretary of State Hillary Clinton, and her running mate Virginia Senator Tim Kaine. Idaho has four electoral votes in the Electoral College.

Trump was expected to win Idaho; Idaho is a Republican stronghold that has not voted for a Democratic candidate for president since Lyndon B. Johnson's national landslide in 1964, and even then it was Johnson's narrowest victory in the nation, winning by less than 2%. Trump ultimately carried the state with 59.25% of the vote, while Clinton received 27.48%. Third-party candidate Evan McMullin carried 6.75% of the popular vote, making Idaho his second-strongest state, only after neighboring Utah. This may have been because McMullin had strong appeal to Mormon voters, with McMullin doing best in the Mormon corridor counties of Idaho.

Trump got the lowest percentage of the vote for a Republican since 1996, and Clinton got the lowest percentage for a Democrat since 1984. As of the 2024 presidential election, this is the last time that Teton County voted Republican.

Primaries and caucuses Republican primary

Thirteen candidates appeared on the Republican presidential primary ballot. The only requirement to appear on the ballot was a filing fee of $1,000.

Democratic caucuses

Constitution primary The Constitution Party of Idaho held its primary on March 8.

Idaho Constitution Party presidential primary, 2016CandidatePopular votePledged delegatesCountPercentage Scott Copeland25051.7%8J.R. Myers13928.7%0Patrick Anthony Ockander9519.6%0Total:484100%8 Key:Withdrew prior to contest

General election Polling

Predictions SourceRankingAs ofLos Angeles Times November 6, 2016CNNNovember 4, 2016Cook Political ReportNovember 7, 2016Electoral-vote.comNovember 8, 2016 Rothenberg Political Report November 7, 2016Sabato's Crystal BallNovember 7, 2016RealClearPoliticsNovember 8, 2016Fox NewsNovember 7, 2016

Results 2016 United States presidential election in Idaho Party Candidate Popular vote Percentage Republican Donald Trump 409,055 59.25% Democratic Hillary Clinton 189,765 27.48% IndependentEvan McMullin 46,476 6.73% Libertarian Gary Johnson 28,331 4.10% GreenJill Stein 8,496 1.23% National Constitution Darrell L. Castle 4,403 0.64% Constitution Scott Copeland 2,356 0.34% Reform Roque De La Fuente 1,373 0.20% Other/Write-in 178 0.03% Total 690,433 100.00% Source: Idaho Secretary of State Election Division New York Times

By county CountyDonald TrumpRepublicanHillary ClintonDemocraticEvan McMullinIndependentVarious candidatesOther partiesMarginTotal#%#%#%#%#%Ada93,75247.91%75,67738.68%11,2265.74%15,0147.67%18,0759.23%195,669Adams1,55671.28%41519.01%803.66%1326.05%1,14152.27%2,183Bannock17,18051.41%10,34230.95%3,44910.32%2,4457.32%6,83820.46%33,416Bear Lake2,20375.24%2558.71%36612.50%1043.55%1,83762.74%2,928Benewah3,10374.15%77018.40%611.46%2515.99%2,33355.75%4,185Bingham10,90765.61%2,92417.59%2,00212.04%7924.76%7,98348.02%16,625Blaine3,34031.15%6,41659.83%2892.69%6796.33%-3,076-28.68%10,724Boise2,67370.08%77720.37%1122.94%2526.61%1,89649.71%3,814Bonner13,34363.71%5,81927.78%3721.78%1,4096.73%7,52435.93%20,943Bonneville26,69960.38%8,93020.19%6,02213.62%2,5705.81%17,76940.19%44,221Boundary3,78973.39%93318.07%1302.52%3116.02%2,85655.32%5,163Butte91474.31%16013.01%1149.27%423.41%75461.30%1,230Camas41069.49%11018.64%335.59%376.28%30050.85%590Canyon47,22264.88%16,88323.20%4,2165.79%4,4646.13%30,33941.68%72,785Caribou2,27574.96%2718.93%37212.26%1173.85%1,90362.70%3,052Cassia5,94972.74%1,03612.67%85310.43%3404.16%4,91360.07%8,178Clark20371.73%4415.55%238.13%134.59%15956.18%283Clearwater2,85275.03%70418.52%721.89%1734.56%2,14856.51%3,801Custer1,77773.61%42717.69%823.40%1285.30%1,35055.92%2,414Elmore5,81668.25%1,81421.29%3764.41%5166.05%4,00246.96%8,522Franklin3,90170.94%3857.00%91216.58%3015.48%2,98954.36%5,499Fremont4,09071.57%65111.39%75113.14%2233.90%3,33958.43%5,715Gem5,98075.18%1,22915.45%3574.49%3884.88%4,75159.73%7,954Gooding3,74372.11%93017.92%2935.64%2254.33%2,81354.19%5,191Idaho6,44178.23%1,19614.53%1652.00%4315.24%5,24563.70%8,233Jefferson8,43673.52%9768.51%1,56013.59%5034.38%6,87659.93%11,475Jerome4,64468.79%1,32919.69%4196.21%3595.31%3,31549.10%6,751Kootenai44,44967.03%16,26424.53%1,5572.35%4,0406.09%28,18542.50%66,310Latah7,26539.98%8,09344.53%6963.83%2,11911.66%-828-4.55%18,173Lemhi3,01173.51%73317.90%1393.39%2135.20%2,27855.61%4,096Lewis1,20275.60%27016.98%171.07%1016.35%93258.62%1,590Lincoln1,18467.73%36020.59%1025.84%1025.84%82447.14%1,748Madison8,94156.99%1,2017.66%4,66929.76%8775.59%4,27227.23%15,688Minidoka4,88771.13%1,16716.98%4636.74%3545.15%3,72054.15%6,871Nez Perce10,69962.20%4,82828.07%3522.05%1,3227.68%5,87134.13%17,201Oneida1,53174.03%1848.90%27113.10%823.97%1,26060.93%2,068Owyhee3,05277.76%59115.06%1082.75%1744.43%2,46162.70%3,925Payette6,48974.55%1,50717.31%3143.61%3944.53%4,98257.24%8,704Power1,66660.41%69925.34%2338.45%1605.80%96735.07%2,758Shoshone3,29764.39%1,38427.03%871.70%3526.88%1,91337.36%5,120Teton2,16743.55%2,15943.39%3276.57%3236.49%80.16%4,976Twin Falls19,82866.37%6,23320.86%2,0656.91%3,8135.86%13,59545.51%29,874Valley2,90654.33%1,91335.76%1943.63%3266.28%99318.57%5,349Washington3,28373.69%77617.42%1753.93%2214.96%2,50756.27%4,455Totals409,05559.25%189,76527.48%46,4766.73%45,1376.54%219,29031.77%690,433

By congressional district Trump won both congressional districts. District Trump Clinton Representative 64% 25%Raúl Labrador 54% 30%Mike Simpson

See also United States presidential elections in Idaho First presidency of Donald Trump 2016 Democratic Party presidential debates and forums 2016 Democratic Party presidential primaries 2016 Republican Party presidential debates and forums 2016 Republican Party presidential primaries

References

Notes

External links RNC 2016 Republican Nominating Process Green papers for 2016 primaries, caucuses, and conventions Decision Desk Headquarter Results for Idaho