United States presidential elections in Iowa
Following is a table of United States presidential elections in Iowa, ordered by year. Since its admission to statehood in 1846, Iowa has participated in every U.S. presidential election.
Winners of the state are in bold.
Elections from 1864 to present
| Year | Winner | Votes | Percent | Loser | Votes | Percent | Other national candidates | Votes | Percent | Electoral Votes | Notes |
| 2020 | TBD | TBD | TBD | TBD | TBD | TBD | — | ||||
| 2016 | Donald Trump | 800,983 | 51.15 | Hillary Clinton | 653,669 | 41.74 | - | 6 | |||
| 2012 | Barack Obama | 822,544 | 51.99 | Mitt Romney | 730,617 | 46.18 | - | 6 | |||
| 2008 | Barack Obama | 828,940 | 53.93 | John McCain | 682,379 | 44.39 | - | 7 | |||
| 2004 | George W. Bush | 751,957 | 49.90 | John Kerry | 741,898 | 49.23 | - | 7 | |||
| 2000 | George W. Bush | 634,373 | 48.22 | Al Gore | 638,517 | 48.54 | - | 7 | |||
| 1996 | Bill Clinton | 620,258 | 50.26 | Bob Dole | 492,644 | 39.92 | Ross Perot | 105,159 | 8.52 | 7 | |
| 1992 | Bill Clinton | 586,353 | 43.29 | George H. W. Bush | 504,891 | 37.27 | Ross Perot | 253,468 | 18.71 | 7 | |
| 1988 | George H. W. Bush | 545,355 | 44.50 | Michael Dukakis | 670,557 | 54.71 | - | 8 | |||
| 1984 | Ronald Reagan | 703,088 | 53.27 | Walter Mondale | 605,620 | 45.89 | - | 8 | |||
| 1980 | Ronald Reagan | 676,026 | 51.31 | Jimmy Carter | 508,672 | 38.60 | John B. Anderson | 115,633 | 8.78 | 8 | |
| 1976 | Jimmy Carter | 619,931 | 48.46 | Gerald Ford | 632,863 | 49.47 | - | 8 | |||
| 1972 | Richard Nixon | 706,207 | 57.61 | George McGovern | 496,206 | 40.48 | - | 8 | |||
| 1968 | Richard Nixon | 619,106 | 53.01 | Hubert Humphrey | 476,699 | 40.82 | George Wallace | 66,422 | 5.69 | 9 | |
| 1964 | Lyndon B. Johnson | 733,030 | 61.88 | Barry Goldwater | 449,148 | 37.92 | - | 9 | |||
| 1960 | John F. Kennedy | 550,565 | 43.22 | Richard Nixon | 722,381 | 56.71 | - | 10 | |||
| 1956 | Dwight D. Eisenhower | 729,187 | 59.06 | Adlai Stevenson II | 501,858 | 40.65 | T. Coleman Andrews/ Unpledged Electors | 3,202 | 0.26 | 10 | |
| 1952 | Dwight D. Eisenhower | 808,906 | 63.75 | Adlai Stevenson II | 451,513 | 35.59 | - | 10 | |||
| 1948 | Harry S. Truman | 522,380 | 50.31 | Thomas E. Dewey | 494,018 | 47.58 | Strom Thurmond | - | 10 | ||
| 1944 | Franklin D. Roosevelt | 499,876 | 47.49 | Thomas E. Dewey | 547,267 | 51.99 | - | 10 | |||
| 1940 | Franklin D. Roosevelt | 578,800 | 47.62 | Wendell Willkie | 632,370 | 52.03 | - | 11 | |||
| 1936 | Franklin D. Roosevelt | 621,756 | 54.41 | Alf Landon | 487,977 | 42.7 | - | 11 | |||
| 1932 | Franklin D. Roosevelt | 598,019 | 57.69 | Herbert Hoover | 414,433 | 39.98 | - | 11 | |||
| 1928 | Herbert Hoover | 623,570 | 61.77 | Al Smith | 379,311 | 37.57 | - | 13 | |||
| 1924 | Calvin Coolidge | 537,635 | 55.03 | John W. Davis | 162,600 | 16.64 | Robert M. La Follette Sr. | 272,243 | 27.87 | 13 | |
| 1920 | Warren G. Harding | 634,674 | 70.91 | James M. Cox | 227,921 | 25.46 | Parley P. Christensen | 10,321 | 1.15 | 13 | |
| 1916 | Woodrow Wilson | 218,699 | 42.55 | Charles E. Hughes | 280,439 | 54.57 | - | 13 | |||
| 1912 | Woodrow Wilson | 185,325 | 37.64 | Theodore Roosevelt | 161,819 | 32.87 | William H. Taft | 119,805 | 24.33 | 13 | |
| 1908 | William H. Taft | 275,209 | 55.62 | William Jennings Bryan | 200,771 | 40.58 | - | 13 | |||
| 1904 | Theodore Roosevelt | 308,158 | 63.39 | Alton B. Parker | 149,276 | 30.71 | - | 13 | |||
| 1900 | William McKinley | 307,808 | 58.04 | William Jennings Bryan | 209,265 | 39.46 | - | 13 | |||
| 1896 | William McKinley | 289,293 | 55.47 | William Jennings Bryan | 223,741 | 42.9 | - | 13 | |||
| 1892 | Grover Cleveland | 196,367 | 44.31 | Benjamin Harrison | 219,795 | 49.6 | James B. Weaver | 20,595 | 4.65 | 13 | |
| 1888 | Benjamin Harrison | 211,603 | 52.36 | Grover Cleveland | 179,877 | 44.51 | - | 13 | |||
| 1884 | Grover Cleveland | 177,316 | 47.01 | James G. Blaine | 197,089 | 52.25 | - | 13 | |||
| 1880 | James A. Garfield | 183,904 | 56.99 | Winfield S. Hancock | 105,845 | 32.8 | James B. Weaver | 32,327 | 10.02 | 11 | |
| 1876 | Rutherford B. Hayes | 171,326 | 58.50 | Samuel J. Tilden | 112,121 | 38.28 | - | 11 | |||
| 1872 | Ulysses S. Grant | 131,566 | 60.81 | Horace Greeley | 81,636 | 37.73 | - | 11 | |||
| 1868 | Ulysses S. Grant | 120,399 | 61.92 | Horatio Seymour | 74,040 | 38.08 | - | 8 | |||
| 1864 | Abraham Lincoln | 83,858 | 63.08 | George B. McClellan | 49,089 | 36.92 | - | 8 |
Election of 1860
The election of 1860 was a complex realigning election in which the breakdown of the previous two-party alignment culminated in four parties each competing for influence in different parts of the country. The result of the election, with the victory of an ardent opponent of slavery, spurred the secession of eleven states and brought about the American Civil War.| Year | Winner | Votes | Percent | Loser | Votes | Percent | Loser | Votes | Percent | Loser | Votes | Percent | Electoral Votes |
| 1860 | Abraham Lincoln | 70,302 | 54.6 | Stephen A. Douglas | 55,639 | 43.2 | John C. Breckinridge | 1,035 | 0.8 | John Bell | 1,763 | 1.4 | 4 |
Elections prior to 1860
| Year | Winner | Votes | Percent | Loser | Votes | Percent | Other national candidates | Votes | Percent | Electoral Votes | Notes |
| 1856 | James Buchanan | 37,568 | 40.7 | John C. Frémont | 45,073 | 48.83 | Millard Fillmore | 9,669 | 10.47 | 4 | |
| 1852 | Franklin Pierce | 17,763 | 50.23 | Winfield Scott | 15,856 | 44.84 | John P. Hale | 1,606 | 4.54 | 4 | |
| 1848 | Zachary Taylor | 9,930 | 44.59 | Lewis Cass | 11,238 | 50.46 | Martin Van Buren | 1,103 | 4.95 | 4 |