Between 1912 and 2016 in the state of Iowa there have been 27 elections of which: 11 have been won by Democrats, 16 won by Republicans, and 0 won by "other parties".

Year Electoral Presidential Candidate Votes Population Votes Turnout Winner
1912 13
R William Howard Taft (OH) 119,805
O Eugene W. Chafin (IL) 8,440
O Theodore Roosevelt (NY) 161,819
O Eugene V. Debs (IN) 16,967
O Arthur E. Reimer (MA)
D Woodrow Wilson (NJ) 185,325 13 Electoral Votes
2,241,203 492,356 21.97% D
1916 13
D Woodrow Wilson (NJ) 218,699
O Allan L. Benson (NY) 10,973
O Arthur E. Reimer (MA)
R Charles Evans Hughes (NY) 280,439 13 Electoral Votes
O Frank Hanly (IN) 3,371
2,274,066 513,482 22.58% R
1920 13
D James M. Cox (OH) 227,921
O Parley P. Christensen (IL) 10,321
O James E. Ferguson (TX)
R Warren G. Harding (OH) 634,674 13 Electoral Votes
O Eugene V. Debs (IN) 16,981
O Aaron S. Watkins (IN) 4,197
O Other (XX) 982
2,404,021 895,076 37.23% R
1924 13
O Other (XX)
R Calvin Coolidge (MA) 537,635 13 Electoral Votes
O Robert M. La Follette (WI) 272,243
O William Z. Foster (MA) 4,037
D John W. Davis (WV) 162,600
O Herman P. Faris (MO)
2,435,106 976,515 40.1% R
1928 13
D Al Smith (NY) 379,311
O William Z. Foster (IL) 328
R Herbert Hoover (CA) 623,570 13 Electoral Votes
O Norman Thomas (NY) 2,960
O Verne L. Reynolds (MI) 230
2,466,191 1,006,399 40.81% R
1932 11
D Franklin D. Roosevelt (NY) 598,019 11 Electoral Votes
O Norman Thomas (NY) 20,467
R Herbert Hoover (CA) 414,433
O Other (XX) 3,768
2,520,358 1,036,687 41.13% D
1936 11
D Franklin D. Roosevelt (NY) 621,756 11 Electoral Votes
O William Lemke (ND) 29,687
O Earl Browder (KS) 1,940
R Alfred Landon (KS) 487,977
O Norman Thomas (NY) 1,373
2,619,195 1,142,733 43.63% D
1940 11
R Wendell Willkie (NY) 632,370 11 Electoral Votes
O Other (XX) 4,260
D Franklin D. Roosevelt (NY) 578,800
O Norman Thomas (NY)
2,538,268 1,215,430 47.88% R
1944 10
O Texas Regulars (TX)
O Other (XX) 3,945
R Thomas E. Dewey (NY) 547,267 10 Electoral Votes
O Norman Thomas (NY) 1,511
D Franklin D. Roosevelt (NY) 499,876
2,639,799 1,052,599 39.87% R
1948 10
R Thomas E. Dewey (NY) 494,018
O Henry A. Wallace (IA) 12,125
O Other (XX) 7,912
D Harry S. Truman (MO) 522,380 10 Electoral Votes
O Strom Thurmond (SC)
O Norman Thomas (NY) 1,829
2,741,330 1,038,264 37.87% D
1952 10
D Adlai Stevenson (IL) 451,513
O Stuart Hamblen (TX) 2,882
R Dwight D. Eisenhower (NY) 808,906 10 Electoral Votes
O Vincent Hallinan (CA) 5,085
O Eric Hass (NY) 139
2,673,494 1,268,525 47.45% R
1956 10
D Adlai Stevenson (IL) 501,858
O Eric Hass (NY) 125
R Dwight D. Eisenhower (NY) 729,187 10 Electoral Votes
O Other (XX) 3,202
2,778,337 1,234,372 44.43% R
1960 10
R Richard Milhous Nixon (CA) 722,381 10 Electoral Votes
O Eric Hass (NY) 230
D John Fitzgerald Kennedy (MA) 550,565
O Other (XX)
2,757,537 1,273,176 46.17% R
1964 9
R Barry Morris Goldwater (AZ) 449,148
O Eric Hass (NY) 182
D Lyndon Baines Johnson (TX) 733,030 9 Electoral Votes
O Other (XX)
2,867,839 1,182,360 41.23% D
1968 9
D Hubert Horatio Humphrey (MN) 476,699
R Richard Milhous Nixon (CA) 619,106 9 Electoral Votes
O George Corley Wallace (AL) 66,422
2,978,140 1,162,227 39.03% R
1972 8
O Linda Jenness (GA)
R Richard Milhous Nixon (CA) 706,207 8 Electoral Votes
O John G. Schmitz (CA) 22,056
D George Stanley McGovern (SD) 496,206
2,880,864 1,224,469 42.5% R
1976 8
R Gerald Rudolph Ford, Jr. (MI) 632,863 8 Electoral Votes
O Roger MacBride (VT) 1,452
D James Earl Carter, Jr. (GA) 619,931
O Eugene McCarthy (MN) 20,051
2,993,839 1,274,297 42.56% R
1980 8
D James Earl Carter, Jr. (GA) 508,672
O Ed Clark (CA) 13,123
R Ronald Wilson Reagan (CA) 676,026 8 Electoral Votes
O John Bayard Anderson (IL) 115,633
2,913,808 1,313,454 45.08% R
1984 8
D Walter Frederick Mondale (MN) 605,620
R Ronald Wilson Reagan (CA) 703,088 8 Electoral Votes
O David Bergland (CA) 1,844
3,030,360 1,310,552 43.25% R
1988 8
O Lenora Fulani (PA) 540
R George Herbert Walker Bush (TX) 545,355
O Ronald Ernest Paul (TX) 2,494
D Michael Stanley Dukakis (MA) 670,557 8 Electoral Votes
3,146,913 1,218,946 38.73% D
1992 7
R George Herbert Walker Bush (TX) 504,891
O Andre Verne Marrou (AK) 1,076
D William Jefferson Clinton (AR) 586,353 7 Electoral Votes
O Henry Ross Perot (TX) 253,468
O Other (XX) 8,819
2,832,290 1,354,607 47.83% D
1996 7
D William Jefferson Clinton (AK) 620,258 7 Electoral Votes
O Henry Ross Perot (TX) 105,159
O Harry Browne (TN) 2,315
R Robert Joseph Dole (KS) 492,644
O Ralph Nader (CT) 6,550
O Other (XX) 7,149
2,943,361 1,234,075 41.93% D
2000 7
O Howard Phillips (VA) 613
O Other (XX) 1,465
R George Walker Bush (TX) 634,373
O Ralph Nader (CT) 29,374
O Harry Browne (TN) 3,209
O John Hagelin (IA) 2,281
D Albert Arnold Gore, Jr. (TN) 638,517 7 Electoral Votes
O Pat Buchanan (VA) 5,731
2,926,324 1,315,563 44.96% D
2004 7
D John Forbes Kerry (MA) 741,898
O Michael Badnarik (TX) 2,992
O David Cobb (TX) 1,141
R George Walker Bush (TX) 751,957 7 Electoral Votes
O Ralph Nader (CT) 5,973
O Michael Peroutka (MD) 1,304
O Other (XX) 1,643
3,043,377 1,506,908 49.51% R
2008 7
O Cynthia McKinney (GA) 1,423
D Barack Hussein Obama (IL) 828,940 7 Electoral Votes
O Ralph Nader (CT) 8,014
O Charles Obadiah Baldwin (FL) 4,445
O Other (XX) 7,332
R John Sidney McCain (AZ) 682,379
O Robert Laurence Barr (GA) 4,590
3,160,430 1,537,123 48.64% D
2012 6
D Barack Hussein Obama (IL) 822,544 6 Electoral Votes
O Gary Johnson (NM) 12,926
O Other (XX) 12,324
R Mitt Romney (MA) 730,617
O Jill Stein (MA) 3,769
3,107,282 1,582,180 50.92% D
2016 6
O Evan McMullin (UT) 12,331
O Gary Johnson (NM) 59,182
D Hillary Clinton (NY) 650,780
O Jill Stein (MA) 11,459
R Donal Trump (NY) 798,923 6 Electoral Votes
3,229,137 1,532,675 47.46% R