Between 1912 and 2016 in the state of Idaho there have been 27 elections of which: 8 have been won by Democrats, 19 won by Republicans, and 0 won by "other parties".

Year Electoral Presidential Candidate Votes Population Votes Turnout Winner
1912 4
O Eugene W. Chafin (IL) 1,536
O Theodore Roosevelt (NY) 25,527
O Eugene V. Debs (IN) 11,960
O Arthur E. Reimer (MA)
D Woodrow Wilson (NJ) 33,921 4 Electoral Votes
R William Howard Taft (OH) 32,810
350,434 105,754 30.18% D
1916 4
D Woodrow Wilson (NJ) 70,054 4 Electoral Votes
O Allan L. Benson (NY) 8,066
O Arthur E. Reimer (MA)
R Charles Evans Hughes (NY) 55,368
O Frank Hanly (IN) 1,127
400,113 134,615 33.64% D
1920 4
D James M. Cox (OH) 46,579
O Parley P. Christensen (IL)
O James E. Ferguson (TX)
R Warren G. Harding (OH) 88,975 4 Electoral Votes
O Eugene V. Debs (IN) 38
O Aaron S. Watkins (IN) 32
O Other (XX)
431,866 135,624 31.4% R
1924 4
R Calvin Coolidge (MA) 69,879 4 Electoral Votes
O Robert M. La Follette (WI) 54,160
O William Z. Foster (MA)
D John W. Davis (WV) 24,256
O Herman P. Faris (MO)
O Other (XX)
488,511 148,295 30.36% R
1928 4
D Al Smith (NY) 52,926
O William Z. Foster (IL)
R Herbert Hoover (CA) 97,322 4 Electoral Votes
O Norman Thomas (NY) 1,293
O Verne L. Reynolds (MI)
545,156 151,541 27.8% R
1932 4
D Franklin D. Roosevelt (NY) 109,479 4 Electoral Votes
O Norman Thomas (NY) 526
R Herbert Hoover (CA) 71,417
O Other (XX) 5,203
453,933 186,625 41.11% D
1936 4
D Franklin D. Roosevelt (NY) 125,683 4 Electoral Votes
O William Lemke (ND) 7,678
O Earl Browder (KS)
R Alfred Landon (KS) 66,256
O Norman Thomas (NY)
471,734 199,617 42.32% D
1940 4
R Wendell Willkie (NY) 106,553
O Other (XX) 276
D Franklin D. Roosevelt (NY) 127,842 4 Electoral Votes
O Norman Thomas (NY) 497
524,873 235,168 44.8% D
1944 4
O Other (XX) 503
R Thomas E. Dewey (NY) 100,137
O Norman Thomas (NY) 282
D Franklin D. Roosevelt (NY) 107,399 4 Electoral Votes
O Texas Regulars (TX)
545,868 208,321 38.16% D
1948 4
R Thomas E. Dewey (NY) 101,514
O Henry A. Wallace (IA) 4,972
O Other (XX) 628
D Harry S. Truman (MO) 107,370 4 Electoral Votes
O Strom Thurmond (SC)
O Norman Thomas (NY) 332
566,863 214,816 37.9% D
1952 4
D Adlai Stevenson (IL) 95,081
O Stuart Hamblen (TX)
R Dwight D. Eisenhower (NY) 180,707 4 Electoral Votes
O Vincent Hallinan (CA) 443
O Eric Hass (NY)
600,410 276,231 46.01% R
1956 4
O Eric Hass (NY)
R Dwight D. Eisenhower (NY) 166,979 4 Electoral Votes
O Other (XX)
D Adlai Stevenson (IL) 105,868
623,955 272,847 43.73% R
1960 4
R Richard Milhous Nixon (CA) 161,597 4 Electoral Votes
O Eric Hass (NY)
D John Fitzgerald Kennedy (MA) 138,853
O Other (XX)
667,191 300,450 45.03% R
1964 4
R Barry Morris Goldwater (AZ) 143,557
O Eric Hass (NY)
D Lyndon Baines Johnson (TX) 148,920 4 Electoral Votes
O Other (XX)
693,879 292,477 42.15% D
1968 4
D Hubert Horatio Humphrey (MN) 89,273
R Richard Milhous Nixon (CA) 165,369 4 Electoral Votes
O George Corley Wallace (AL) 36,541
720,566 291,183 40.41% R
1972 4
R Richard Milhous Nixon (CA) 199,384 4 Electoral Votes
O John G. Schmitz (CA) 28,869
D George Stanley McGovern (SD) 80,826
O Linda Jenness (GA)
726,818 309,079 42.52% R
1976 4
R Gerald Rudolph Ford, Jr. (MI) 204,151 4 Electoral Votes
O Roger MacBride (VT) 3,558
D James Earl Carter, Jr. (GA) 126,549
O Eugene McCarthy (MN)
755,321 334,258 44.25% R
1980 4
D James Earl Carter, Jr. (GA) 110,192
O Ed Clark (CA) 8,425
R Ronald Wilson Reagan (CA) 290,699 4 Electoral Votes
O John Bayard Anderson (IL) 27,058
943,935 436,374 46.23% R
1984 4
D Walter Frederick Mondale (MN) 108,510
R Ronald Wilson Reagan (CA) 297,523 4 Electoral Votes
O David Bergland (CA) 2,823
981,693 408,856 41.65% R
1988 4
R George Herbert Walker Bush (TX) 253,881 4 Electoral Votes
O Ronald Ernest Paul (TX) 5,313
D Michael Stanley Dukakis (MA) 147,272
O Lenora Fulani (PA) 2,502
1,019,450 408,968 40.12% R
1992 4
R George Herbert Walker Bush (TX) 202,645 4 Electoral Votes
O Andre Verne Marrou (AK) 1,167
D William Jefferson Clinton (AR) 137,013
O Henry Ross Perot (TX) 130,395
O Other (XX) 10,894
1,026,884 482,114 46.95% R
1996 4
D William Jefferson Clinton (AK) 165,443
O Henry Ross Perot (TX) 62,518
O Harry Browne (TN) 3,325
R Robert Joseph Dole (KS) 256,595 4 Electoral Votes
O Ralph Nader (CT)
O Other (XX) 3,838
1,067,154 491,719 46.08% R
2000 4
O Other (XX) 6
R George Walker Bush (TX) 336,937 4 Electoral Votes
O Ralph Nader (CT) 12,292
O Harry Browne (TN) 3,488
O John Hagelin (IA) 1,177
D Albert Arnold Gore, Jr. (TN) 138,637
O Pat Buchanan (VA) 7,615
O Howard Phillips (VA) 1,469
1,293,953 501,621 38.77% R
2004 4
D John Forbes Kerry (MA) 181,098
O Michael Badnarik (TX) 3,844
O David Cobb (TX) 58
R George Walker Bush (TX) 409,235 4 Electoral Votes
O Ralph Nader (CT) 1,115
O Michael Peroutka (MD) 3,084
O Other (XX) 13
1,345,711 598,447 44.47% R
2008 4
D Barack Hussein Obama (IL) 236,440
O Ralph Nader (CT) 7,175
O Charles Obadiah Baldwin (FL) 4,747
O Other (XX) 51
R John Sidney McCain (AZ) 403,012 4 Electoral Votes
O Robert Laurence Barr (GA) 3,658
O Cynthia McKinney (GA) 39
1,397,469 655,122 46.88% R
2012 4
D Barack Hussein Obama (IL) 212,787
O Gary Johnson (NM) 9,453
O Other (XX) 4,721
R Mitt Romney (MA) 420,911 4 Electoral Votes
O Jill Stein (MA) 4,402
1,598,934 652,274 40.79% R
2016 4
O Evan McMullin (UT) 46,702
O Gary Johnson (NM) 28,369
D Hillary Clinton (NY) 190,971
O Jill Stein (MA) 8,524
R Donal Trump (NY) 412,525 4 Electoral Votes
1,661,637 687,091 41.35% R