IA
Iowa
Party timeline · 1848–2024
One stripe per cycle. Hover to inspect, click to open that state-cycle.
Swing timeline · Iowa
One column per cycle. Height is the state’s electoral votes, colour is the party that carried it, and a diamond marks a flip. 13 flips across 45 cycles.
Electoral votes over time
By party · all cycles
Rep 32
Dem 13
Popular vote · newest first
Swing is how far the gap between the Democratic and Republican shares moved since the state’s previous election with sourced votes: “R +1.6” means 1.6 points toward the Republican.
Scroll the table sideways for every column.
| Year | Carried by | Dem | Rep | Others named | Margin | Swing |
|---|---|---|---|---|---|---|
| 2024 | Rep Trump | Harris 707,278 42.5% | Trump 927,019 55.7% | None | 219,741 13.2 pts | R +5.1 since 2020 |
| 20201 | Rep Trump | Biden 759,061 44.6% | Trump 897,672 52.8% | Jo Jorgensen 19,637 · 1.2% | 138,611 8.2 pts | D +1.3 since 2016 |
| 20162 | Rep Trump | Clinton 653,669 41.8% | Trump 800,983 51.2% | Gary Johnson 59,186 · 3.8% | 147,314 9.4 pts | R +15.2 since 2012 |
| 2012 | Dem Obama | Obama 822,544 52.0% | Romney 730,617 46.2% | None | 91,927 5.8 pts | R +3.7 since 2008 |
| 2008 | Dem Obama | Obama 828,940 53.9% | McCain 682,379 44.4% | None | 146,561 9.5 pts | D +10.2 since 2004 |
| 2004 | Rep Bush | Kerry 741,898 49.2% | Bush 751,957 49.9% | None | 10,059 0.7 pts | R +1.0 since 2000 |
| 20003 | Dem Gore | Gore 638,517 47.2% | Bush 634,373 46.9% | Ralph Nader 29,374 · 2.2% | 4,144 0.3 pts | R +10.0 since 1996 |
| 1996 | Dem Clinton | Clinton 620,258 50.3% | Dole 492,644 39.9% | Ross Perot 105,159 · 8.5% | 127,614 10.3 pts | D +4.3 since 1992 |
| 19924 | Dem Clinton | Clinton 586,353 43.3% | Bush 504,891 37.3% | Ross Perot 253,468 · 18.7% | 81,462 6.0 pts | R +4.2 since 1988 |
| 1988 | Dem Dukakis | Dukakis 670,557 54.7% | Bush 545,355 44.5% | None | 125,202 10.2 pts | D +17.6 since 1984 |
| 1984 | Rep Reagan | Mondale 605,620 45.9% | Reagan 703,088 53.3% | None | 97,468 7.4 pts | D +5.3 since 1980 |
| 1980 | Rep Reagan | Carter 508,672 38.6% | Reagan 676,026 51.3% | John B. Anderson 115,633 · 8.8% | 167,354 12.7 pts | R +11.7 since 1976 |
| 1976 | Rep Ford | Carter 619,931 48.5% | Ford 632,864 49.5% | Eugene McCarthy 20,057 · 1.6% | 12,933 1.0 pts | D +16.1 since 1972 |
| 19725 | Rep Nixon | McGovern 496,2065 40.5% | Nixon 706,2075 57.6% | John G. Schmitz 22,056 · 1.8%5 | 210,001 17.1 pts | R +4.9 since 1968 |
| 19686 | Rep Nixon | Humphrey 476,6996 40.8% | Nixon 619,1066 53.0% | George Wallace 66,422 · 5.7%6 | 142,407 12.2 pts | R +36.2 since 1964 |
| 19647 | Dem Johnson | Johnson 733,0307 61.9% | Goldwater 449,1487 37.9% | None | 283,882 24.0 pts | D +37.5 since 1960 |
| 1960 | Rep Nixon | Kennedy 550,565 43.2% | Nixon 722,381 56.7% | None | 171,816 13.5 pts | D +4.9 since 1956 |
| 19568 | Rep Eisenhower | Stevenson 501,8588 40.7% | Eisenhower 729,1878 59.1% | None | 227,329 18.4 pts | D +9.8 since 1952 |
| 19529 | Rep Eisenhower | Stevenson 451,5139 35.6% | Eisenhower 808,9069 63.8% | None | 357,393 28.2 pts | R +30.9 since 1948 |
| 1948 | Dem Truman | Truman 522,380 50.3% | Dewey 494,018 47.6% | Henry A. Wallace 12,125 · 1.2% | 28,362 2.7 pts | D +7.2 since 1944 |
| 1944 | Rep Dewey | Roosevelt 499,876 47.5% | Dewey 547,267 52.0% | None | 47,391 4.5 pts | R +0.09 since 1940 |
| 194010 | Rep Willkie | Roosevelt 578,80010 47.6% | Willkie 632,37010 52.0% | None | 53,570 4.4 pts | R +16.1 since 1936 |
| 1936 | Dem Roosevelt | Roosevelt 621,756 54.4% | Landon 487,977 42.7% | William Lemke 29,687 · 2.6% | 133,779 11.7 pts | R +6.0 since 1932 |
| 1932 | Dem Roosevelt | Roosevelt 598,019 57.7% | Hoover 414,433 40.0% | Norman Thomas 20,467 · 2.0% | 183,586 17.7 pts | D +42.0 since 1928 |
| 192811 | Rep Hoover | Smith 378,93611 37.5% | Hoover 623,81811 61.8% | None | 244,882 24.3 pts | D +14.1 since 1924 |
| 192412,13 | Rep Coolidge | Davis 162,60012 16.6% | Coolidge 537,63512 55.0% | Robert M. La Follette 272,243 · 27.9%12 | 265,392 27.2 pts | D +7.1 since 1920 |
| 192014 | Rep Harding | Cox 227,92114 25.5% | Harding 634,67414 70.9% | Eugene V. Debs 16,981 · 1.9%14 Parley P. Christensen 10,321 · 1.2%14 | 406,753 45.4 pts | R +34.5 since 1916 |
| 191615 | Rep Hughes | Wilson 222,50515 43.0% | Hughes 279,06515 53.9% | Allan L. Benson 10,976 · 2.1%15 | 56,560 10.9 pts | R +24.2 since 1912 |
| 191216 | Dem Wilson | Wilson 185,32516 37.6% | Taft 119,80516 24.3% | Theodore Roosevelt 161,819 · 32.9%16 Eugene V. Debs 16,967 · 3.4%16 Eugene W. Chafin 8,440 · 1.7%16 | 23,506 4.8 pts | D +28.4 since 1908 |
| 1908 | Rep Taft | Bryan 200,771 40.6% | Taft 275,210 55.6% | Eugene W. Chafin 9,837 · 2.0% Eugene V. Debs 8,287 · 1.7% | 74,439 15.0 pts | D +17.6 since 1904 |
| 1904 | Rep Roosevelt | Parker 149,141 30.7% | Roosevelt 307,907 63.4% | Eugene V. Debs 14,847 · 3.1% Silas C. Swallow 11,601 · 2.4% | 158,766 32.7 pts | R +14.1 since 1900 |
| 1900 | Rep McKinley | Bryan 209,466 39.5% | McKinley 307,818 58.1% | John G. Woolley 9,502 · 1.8% | 98,352 18.6 pts | R +6.0 since 1896 |
| 189617 | Rep McKinley | Bryan 223,74117 42.9% | McKinley 289,29317 55.5% | None | 65,552 12.6 pts | R +7.3 since 1892 |
| 189218 | Rep Harrison | Cleveland 196,36718 44.3% | Harrison 219,79518 49.6% | James B. Weaver 20,595 · 4.6%18 John Bidwell 6,402 · 1.4%18 | 23,428 5.3 pts | D +2.6 since 1888 |
| 1888 | Rep Harrison | Cleveland 179,877 44.5% | Harrison 211,598 52.4% | Alson J. Streeter 9,105 · 2.3% | 31,721 7.8 pts | R +2.6 since 1884 |
| 188419,20 | Rep Blaine | Cleveland 177,31619 47.2% | Blaine 197,08919 52.4% | None | 19,773 5.3 pts | D +19.0 since 1880 |
| 188021 | Rep Garfield | Hancock 105,84521 32.9% | Garfield 183,90421 57.1% | James B. Weaver 32,327 · 10.0%21 | 78,059 24.2 pts | R +4.0 since 1876 |
| 187622 | Rep Hayes | Tilden 112,09922 38.2% | Hayes 171,32722 58.4% | Peter Cooper 9,901 · 3.4%22 | 59,228 20.2 pts | D +9.2 since 1872 |
| 187223,24 | Rep Grant | Greeley 71,13423 34.8% | Grant 131,23323 64.1% | Charles O'Conor 2,221 · 1.1%23 | 60,099 29.4 pts | R +5.5 since 1868 |
| 186825 | Rep Grant | Seymour 74,04025 38.1% | Grant 120,39925 61.9% | None | 46,359 23.8 pts | First sourced year |
| 186426 | Rep Lincoln | State popular vote not yet sourced. | ||||
| 186027 | Rep Lincoln | State popular vote not yet sourced. | ||||
| 185628 | Rep Fremont | State popular vote not yet sourced. | ||||
| 185229 | Dem Pierce | State popular vote not yet sourced. | ||||
| 184830 | Dem Cass | State popular vote not yet sourced. | ||||
Shares are of the state’s total vote for president. Margin is the leader’s lead over the second-placed candidate. “Others named” lists every other candidate the figures give a line of their own.
Notes on the figures
- 2020 'Other candidates' includes 10,966 blank, void, over- or under-vote or 'none of these candidates' ballots, which the source reports as lines of their own.
- 2016 The source reports 17,746 write-in votes on one line with no candidate name, so the people they went to cannot be shown separately; they are counted in 'Other candidates'.
- 2000 The source reports 37,459 votes under the label 'Independent' on one line with no candidate name, so the people they went to cannot be shown separately; they are counted in 'Other candidates'.
- 1992 'Other candidates' includes 741 blank, void, over- or under-vote or 'none of these candidates' ballots, which the source reports as lines of their own.
- 1972 The official table notes: Others 199: footnote 2, 'Universal Party.'
- 1968 The official table notes: Others 3,519: footnote 4, 'Includes 3,377 votes for nomination by Petition Party and 142 votes for Universal Party.'
- 1964 The official table prints a state total of 1,224,539, which does not agree with its own figures (they add up to 1,184,539); their sum is used.
- 1956 The official table notes: Constitution column: A. C. P. of Iowa Party votes (footnote 3).
- 1952 The official table notes: Others: scattering (footnote 8).
- 1940 The official table notes: Other: Socialist Labor, 452.
- 1928 The official table notes: Footnote 6: 'Scattering votes, 2, included in grand total.'
- 1924 La Follette's figure is the official table's: scattering votes, 445, included in grand total (footnote 4); transcribed as Scattering.
- 1924 The official table notes: Scattering votes, 445, included in grand total (footnote 4); transcribed as Scattering.
- 1920 The official table prints no state total here; the total is the sum of the tickets it lists.
- 1916 The official table's state total (517,716) is 1,793 more than the tickets it lists; the difference is counted under other candidates.
- 1912 The official table prints a state total of 492,326, which does not agree with its own figures (they add up to 492,356); their sum is used.
- 1896 The official table prints no state total here; the total is the sum of the tickets it lists.
- 1892 The official table prints no state total here; the total is the sum of the tickets it lists.
- 1884 The official table prints no state total here; the total is the sum of the tickets it lists.
- 1884 The official table notes: * Fusion of the Democrats and Greenbackers on one electoral ticket (the Cleveland figure is the fusion ticket's vote).
- 1880 The official table prints no state total here; the total is the sum of the tickets it lists.
- 1876 The official table prints no state total here; the total is the sum of the tickets it lists.
- 1872 Horace Greeley was the Liberal Republican nominee and was also endorsed by the Democratic Party; he is listed under the Democratic column, where the county file records his votes.
- 1872 The official table prints no state total here; the total is the sum of the tickets it lists.
- 1868 The official table prints no state total here; the total is the sum of the tickets it lists.
- 1864 State popular vote not yet sourced.
- 1860 State popular vote not yet sourced.
- 1856 State popular vote not yet sourced.
- 1852 State popular vote not yet sourced.
- 1848 State popular vote not yet sourced.
SourcesMIT Election Data and Science Lab, U.S. President 1976–2024 ; Statistics of the Presidential and Congressional Election of November 7, 1972 ; Statistics of the Presidential and Congressional Election of November 5, 1968 ; Statistics of the Presidential and Congressional Election of November 3, 1964 ; Statistics of the Presidential and Congressional Election of November 8, 1960 ; Statistics of the Presidential and Congressional Election of November 6, 1956 ; Statistics of the Presidential and Congressional Election of November 4, 1952 ; Statistics of the Presidential and Congressional Election of November 2, 1948 ; Statistics of the Presidential and Congressional Election of November 7, 1944 ; Statistics of the Presidential and Congressional Election of November 5, 1940 ; Statistics of the Presidential and Congressional Election of November 3, 1936 ; Statistics of the Presidential and Congressional Election of November 8, 1932 ; Statistics of the Presidential and Congressional Election of November 6, 1928 ; Statistics of the Presidential and Congressional Election of November 4, 1924 ; Statistics of the Congressional and Presidential Election of November 2, 1920 ; The World Almanac and Encyclopedia 1917 ; The World Almanac and Encyclopedia 1914 ; The World Almanac and Encyclopedia 1910 ; The World Almanac and Encyclopedia 1905 ; The World Almanac and Encyclopedia 1901 ; The World Almanac and Encyclopedia 1897 ; The World Almanac and Encyclopedia 1894 ; The World Almanac 1891 ; The World Almanac 1886 ; The Tribune Almanac and Political Register for 1878 ; The World Almanac for 1873 . How these figures were compiled
Results · oldest → newest
Second Party System
1848
Cass
National: Zachary Taylor · Whig
Second Party System1852
Pierce
National: Franklin Pierce · Dem
Antebellum Crisis1856
Fremont
National: James Buchanan · Dem
Civil War1860
Lincoln
National: Abraham Lincoln · Rep
Civil War1864
Lincoln
National: Abraham Lincoln · Rep
Reconstruction1868
Grant
National: Ulysses S. Grant · Rep
Reconstruction1872
Grant
National: Ulysses S. Grant · Rep
Gilded Age1876
Hayes
National: Rutherford B. Hayes · Rep
Gilded Age1880
Garfield
National: James A. Garfield · Rep
Gilded Age1884
Blaine
National: Grover Cleveland · Dem
Gilded Age1888
Harrison
National: Benjamin Harrison · Rep
Gilded Age1892
Harrison
National: Grover Cleveland · Dem
Progressive Era1896
McKinley
National: William McKinley · Rep
Progressive Era1900
McKinley
National: William McKinley · Rep
Progressive Era1904
Roosevelt
National: Theodore Roosevelt · Rep
Progressive Era1908
Taft
National: William Howard Taft · Rep
Progressive Era1912
Wilson
National: Woodrow Wilson · Dem
Progressive Era1916
Hughes
National: Woodrow Wilson · Dem
Roaring Twenties1920
Harding
National: Warren G. Harding · Rep
Roaring Twenties1924
Coolidge
National: Calvin Coolidge · Rep
Roaring Twenties1928
Hoover
National: Herbert Hoover · Rep
New Deal Coalition1932
Roosevelt
National: Franklin D. Roosevelt · Dem
New Deal Coalition1936
Roosevelt
National: Franklin D. Roosevelt · Dem
New Deal Coalition1940
Willkie
National: Franklin D. Roosevelt · Dem
New Deal Coalition1944
Dewey
National: Franklin D. Roosevelt · Dem
New Deal Coalition1948
Truman
National: Harry S. Truman · Dem
New Deal Coalition1952
Eisenhower
National: Dwight D. Eisenhower · Rep
New Deal Coalition1956
Eisenhower
National: Dwight D. Eisenhower · Rep
New Deal Coalition1960
Nixon
National: John F. Kennedy · Dem
New Deal Coalition1964
Johnson
National: Lyndon B. Johnson · Dem
Cold War Realignment1968
Nixon
National: Richard Nixon · Rep
Cold War Realignment1972
Nixon
National: Richard Nixon · Rep
Cold War Realignment1976
Ford
National: Jimmy Carter · Dem
Cold War Realignment1980
Reagan
National: Ronald Reagan · Rep
Cold War Realignment1984
Reagan
National: Ronald Reagan · Rep
Cold War Realignment1988
Dukakis
National: George H. W. Bush · Rep
Modern Polarization1992
Clinton
National: Bill Clinton · Dem
Modern Polarization1996
Clinton
National: Bill Clinton · Dem
Modern Polarization2000
Gore
National: George W. Bush · Rep
Modern Polarization2004
Bush
National: George W. Bush · Rep
Modern Polarization2008
Obama
National: Barack Obama · Dem
Modern Polarization2012
Obama
National: Barack Obama · Dem
Modern Polarization2016
Trump
National: Donald Trump · Rep
Modern Polarization2020
Trump
National: Joe Biden · Dem
Modern Polarization2024
Trump
National: Donald Trump · Rep
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