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United States · Election results history · 1984 president · Iowa
Election 1984 Results

Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.

1984 presidential election in Iowa

Ronald Reagan (Republican) beat Walter Mondale (Democrat) in Iowa in 1984, 53.3% to 45.9%, a margin of 7.4 points and 97,468 votes.

Iowa voted 10.8 points more Democratic than the country as a whole, where the margin was R+18.2.

The Republican hold continued from 1980, when Ronald Reagan also won.

Republicans led in 83 of the 99 counties as they stood then and Democrats in 16. The largest, Polk, cast 147,848 votes and went to the Democrat by 2.7 points. The closest was Decatur, where 6 votes separated the two parties.

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Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.

Result

CandidatePartyVotesShare
Ronald Reagan won Republican 703,088 53.3%
Walter Mondale Democratic 605,620 45.9%
All other candidates 11,097 0.8%
Total1,319,805

Every county

CountyDemocratRepublicanOthersTotalMargin
Polk 75,413 51.0% 71,413 48.3% 1,022 147,848 D+2.7
Linn 38,528 48.0% 41,061 51.1% 726 80,315 R+3.2
Scott 32,550 45.7% 38,034 53.4% 628 71,212 R+7.7
Black Hawk 31,467 49.0% 32,262 50.2% 504 64,233 R+1.2
Johnson 26,000 57.7% 18,677 41.5% 367 45,044 D+16.3
Woodbury 18,951 44.7% 23,002 54.3% 397 42,350 R+9.6
Dubuque 21,876 52.7% 19,239 46.4% 376 41,491 D+6.4
Story 18,277 47.6% 19,804 51.6% 329 38,410 R+4.0
Pottawattamie 12,329 36.1% 21,527 63.1% 256 34,112 R+27.0
Clinton 11,240 44.2% 13,914 54.8% 250 25,404 R+10.5
Cerro Gordo 11,570 50.4% 11,214 48.9% 166 22,950 D+1.6
Des Moines 11,173 53.6% 9,559 45.8% 118 20,850 D+7.7
Marshall 8,809 44.4% 10,839 54.6% 192 19,840 R+10.2
Webster 9,930 50.1% 9,619 48.6% 253 19,802 D+1.6
Lee 8,912 50.0% 8,756 49.2% 141 17,809 D+0.9
Wapello 10,545 59.2% 7,098 39.9% 157 17,800 D+19.4
Jasper 8,023 48.0% 8,576 51.4% 100 16,699 R+3.3
Warren 8,171 49.3% 8,277 50.0% 122 16,570 R+0.6
Muscatine 5,986 39.5% 9,069 59.8% 113 15,168 R+20.3
Sioux 2,585 18.1% 11,665 81.6% 43 14,293 R+63.5
Marion 6,313 46.3% 7,259 53.2% 62 13,634 R+6.9
Dallas 6,564 51.7% 6,080 47.8% 63 12,707 D+3.8
Boone 6,485 52.8% 5,746 46.8% 46 12,277 D+6.0
Fayette 4,677 41.4% 6,505 57.6% 120 11,302 R+16.2
Bremer 4,084 36.9% 6,895 62.4% 76 11,055 R+25.4
Benton 4,993 46.8% 5,566 52.1% 119 10,678 R+5.4
Mahaska 4,107 39.9% 6,086 59.1% 100 10,293 R+19.2
Carroll 4,960 49.2% 5,021 49.8% 96 10,077 R+0.6
Plymouth 3,464 34.5% 6,482 64.6% 81 10,027 R+30.1
Kossuth 4,838 49.3% 4,872 49.6% 104 9,814 R+0.3
Hardin 4,477 46.0% 5,195 53.4% 60 9,732 R+7.4
Buena Vista 4,109 43.7% 5,193 55.2% 103 9,405 R+11.5
Jackson 4,400 47.1% 4,811 51.5% 129 9,340 R+4.4
Buchanan 4,129 45.1% 4,965 54.3% 58 9,152 R+9.1
Winneshiek 3,724 40.9% 5,277 58.0% 104 9,105 R+17.1
Tama 4,061 45.2% 4,882 54.3% 47 8,990 R+9.1
Poweshiek 4,103 46.2% 4,715 53.0% 71 8,889 R+6.9
Jones 3,825 43.5% 4,907 55.8% 59 8,791 R+12.3
Clayton 3,446 40.3% 5,029 58.8% 78 8,553 R+18.5
Floyd 4,154 48.6% 4,341 50.8% 58 8,553 R+2.2
Clay 3,774 45.4% 4,450 53.5% 92 8,316 R+8.1
Crawford 3,396 42.2% 4,552 56.5% 105 8,053 R+14.4
Delaware 3,158 39.5% 4,769 59.6% 74 8,001 R+20.1
Henry 3,377 42.5% 4,516 56.8% 62 7,955 R+14.3
Page 1,914 24.5% 5,876 75.1% 38 7,828 R+50.6
Washington 3,079 39.6% 4,613 59.4% 78 7,770 R+19.7
Cedar 3,086 39.8% 4,617 59.6% 45 7,748 R+19.8
Jefferson 2,961 38.3% 4,727 61.2% 37 7,725 R+22.9
Hamilton 3,330 43.3% 4,279 55.6% 86 7,695 R+12.3
O'Brien 2,479 32.8% 5,008 66.2% 82 7,569 R+33.4
Cass 2,417 32.1% 5,053 67.1% 61 7,531 R+35.0
Cherokee 3,349 44.8% 4,046 54.2% 75 7,470 R+9.3
Iowa 2,815 38.8% 4,352 60.0% 84 7,251 R+21.2
Dickinson 3,025 42.2% 4,064 56.7% 81 7,170 R+14.5
Butler 2,323 33.5% 4,570 66.0% 31 6,924 R+32.5
Chickasaw 3,186 46.1% 3,661 52.9% 70 6,917 R+6.9
Harrison 2,495 36.3% 4,352 63.2% 35 6,882 R+27.0
Appanoose 3,289 48.7% 3,412 50.5% 58 6,759 R+1.8
Wright 2,980 44.4% 3,675 54.8% 50 6,705 R+10.4
Union 2,875 43.7% 3,583 54.5% 118 6,576 R+10.8
Shelby 2,291 35.0% 4,200 64.2% 46 6,537 R+29.2
Grundy 1,915 29.4% 4,527 69.5% 76 6,518 R+40.1
Allamakee 2,282 35.9% 3,997 62.9% 75 6,354 R+27.0
Winnebago 2,669 42.3% 3,616 57.3% 29 6,314 R+15.0
Madison 3,067 49.0% 3,168 50.6% 26 6,261 R+1.6
Hancock 2,539 42.8% 3,362 56.6% 37 5,938 R+13.9
Montgomery 1,661 28.0% 4,224 71.2% 45 5,930 R+43.2
Calhoun 2,541 43.1% 3,311 56.1% 46 5,898 R+13.1
Humboldt 2,406 41.0% 3,396 57.9% 61 5,863 R+16.9
Palo Alto 3,018 51.9% 2,715 46.7% 77 5,810 D+5.2
Mitchell 2,531 44.1% 3,144 54.7% 68 5,743 R+10.7
Sac 2,363 41.2% 3,298 57.6% 68 5,729 R+16.3
Emmet 2,746 48.0% 2,946 51.5% 33 5,725 R+3.5
Keokuk 2,649 46.8% 2,913 51.5% 94 5,656 R+4.7
Lyon 1,401 24.8% 4,178 74.1% 63 5,642 R+49.2
Greene 2,831 51.0% 2,579 46.4% 144 5,554 D+4.5
Franklin 2,349 42.4% 3,129 56.4% 67 5,545 R+14.1
Mills 1,434 26.1% 3,994 72.8% 58 5,486 R+46.7
Guthrie 2,517 46.9% 2,783 51.9% 63 5,363 R+5.0
Pocahontas 2,481 47.8% 2,627 50.6% 80 5,188 R+2.8
Lucas 2,422 47.6% 2,630 51.7% 33 5,085 R+4.1
Monona 2,159 43.5% 2,746 55.4% 54 4,959 R+11.8
Howard 2,135 43.6% 2,718 55.5% 45 4,898 R+11.9
Adair 1,979 42.8% 2,615 56.6% 25 4,619 R+13.8
Louisa 1,927 42.1% 2,623 57.4% 23 4,573 R+15.2
Clarke 2,030 47.0% 2,262 52.3% 29 4,321 R+5.4
Monroe 2,342 54.6% 1,927 44.9% 22 4,291 D+9.7
Worth 2,263 53.0% 1,985 46.5% 18 4,266 D+6.5
Decatur 2,098 49.5% 2,104 49.6% 40 4,242 R+0.1
Ida 1,559 37.1% 2,618 62.3% 25 4,202 R+25.2
Audubon 1,854 44.2% 2,306 55.0% 35 4,195 R+10.8
Davis 2,187 52.3% 1,956 46.8% 39 4,182 D+5.5
Fremont 1,426 34.4% 2,686 64.8% 35 4,147 R+30.4
Taylor 1,499 37.3% 2,496 62.1% 27 4,022 R+24.8
Wayne 1,927 47.9% 2,061 51.3% 33 4,021 R+3.3
Van Buren 1,606 42.6% 2,138 56.7% 25 3,769 R+14.1
Osceola 1,146 33.1% 2,285 66.0% 32 3,463 R+32.9
Ringgold 1,593 51.1% 1,512 48.5% 12 3,117 D+2.6
Adams 1,221 41.3% 1,706 57.6% 33 2,960 R+16.4

Counties as they stood in 1984; some have since been split, merged or renamed. Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

Iowa in every presidential election we hold

YearWinnerMargin
2024 Donald Trump (R) R+13.2
2020 Donald Trump (R) R+8.2
2016 Donald Trump (R) R+9.4
2012 Barack Obama (D) D+5.8
2008 Barack Obama (D) D+9.5
2004 George W. Bush (R) R+0.7
2000 Al Gore (D) D+0.3
1996 Bill Clinton (D) D+10.3
1992 Bill Clinton (D) D+6.0
1988 Michael Dukakis (D) D+10.2
1984 Ronald Reagan (R) R+7.4
1980 Ronald Reagan (R) R+12.7
1976 Gerald Ford (R) R+1.0
1972 Richard Nixon (R) R+17.1
1968 Richard Nixon (R) R+12.2
1964 Lyndon B. Johnson (D) D+24.0
1960 Richard Nixon (R) R+13.5
1956 Dwight D. Eisenhower (R) R+18.4
1952 Dwight D. Eisenhower (R) R+28.2
1948 Harry S. Truman (D) D+2.7
1944 Thomas E. Dewey (R) R+4.5
1940 Wendell Willkie (R) R+4.4
1936 Franklin D. Roosevelt (D) D+11.7
1932 Franklin D. Roosevelt (D) D+17.7
1928 Herbert Hoover (R) R+24.2
1924 Calvin Coolidge (R) R+38.4
1920 Warren G. Harding (R) R+45.4
1916 Charles Evans Hughes (R) R+12.0
1912 Woodrow Wilson (D) D+13.3
1908 William Howard Taft (R) R+15.0
1904 Theodore Roosevelt (R) R+32.7
1900 William McKinley (R) R+18.6
1896 William McKinley (R) R+12.6
1892 Benjamin Harrison (R) R+5.3
1888 Benjamin Harrison (R) R+7.8
1884 James G. Blaine (R) R+5.2
1880 James A. Garfield (R) R+24.1
1876 Rutherford B. Hayes (R) R+20.2
1872 Ulysses S. Grant (R) R+23.1
1868 Ulysses S. Grant (R) R+23.8