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United States · Election results history · 2008 president · Iowa
Election 2008 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.

2008 presidential election in Iowa

Barack Obama (Democrat) beat John McCain (Republican) in Iowa in 2008, 53.9% to 44.4%, a margin of 9.5 points and 146,561 votes.

Iowa voted 2.3 points more Democratic than the country as a whole, where the margin was D+7.3.

Iowa changed party: in 2004 it went Republican, for George W. Bush.

Democrats led in 53 of the 99 counties and Republicans in 46. The largest, Polk, cast 214,386 votes and went to the Democrat by 14.6 points. The closest was Iowa, where 14 votes separated the two parties.

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Results
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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
Barack Obama won Democratic 828,940 53.9%
John McCain Republican 682,379 44.4%
All other candidates 25,804 1.7%
Total1,537,123

Every county

CountyDemocratRepublicanOthersTotalMargin
Polk 120,984 56.4% 89,668 41.8% 3,734 214,386 D+14.6
Linn 68,037 60.0% 43,626 38.5% 1,692 113,355 D+21.5
Scott 48,927 56.6% 36,365 42.1% 1,079 86,371 D+14.5
Johnson 51,027 69.9% 20,732 28.4% 1,216 72,975 D+41.5
Black Hawk 39,184 60.5% 24,662 38.1% 929 64,775 D+22.4
Dubuque 28,611 59.7% 18,651 38.9% 691 47,953 D+20.8
Story 26,548 57.0% 18,995 40.8% 1,032 46,575 D+16.2
Woodbury 21,983 49.1% 22,219 49.6% 599 44,801 R+0.5
Pottawattamie 20,436 48.3% 21,237 50.2% 647 42,320 R+1.9
Dallas 15,149 46.4% 16,954 51.9% 537 32,640 R+5.5
Warren 12,299 49.4% 12,144 48.8% 437 24,880 D+0.6
Clinton 15,018 60.8% 9,324 37.7% 377 24,719 D+23.0
Cerro Gordo 14,405 59.7% 9,375 38.8% 360 24,140 D+20.8
Des Moines 12,462 60.6% 7,721 37.5% 387 20,570 D+23.0
Jasper 10,250 52.8% 8,794 45.3% 377 19,421 D+7.5
Muscatine 10,920 57.1% 7,929 41.5% 270 19,119 D+15.6
Marshall 10,023 53.7% 8,278 44.4% 356 18,657 D+9.4
Webster 9,917 53.4% 8,337 44.9% 300 18,554 D+8.5
Lee 9,821 57.0% 7,062 41.0% 341 17,224 D+16.0
Marion 7,421 43.6% 9,256 54.4% 353 17,030 R+10.8
Sioux 3,030 18.2% 13,490 81.0% 144 16,664 R+62.8
Wapello 8,820 55.4% 6,663 41.8% 448 15,931 D+13.5
Boone 7,356 52.8% 6,293 45.2% 280 13,929 D+7.6
Benton 7,058 51.5% 6,447 47.0% 207 13,712 D+4.5
Bremer 6,940 53.9% 5,741 44.6% 190 12,871 D+9.3
Plymouth 4,629 37.0% 7,765 62.1% 118 12,512 R+25.1
Winneshiek 6,829 60.5% 4,273 37.9% 178 11,280 D+22.7
Mahaska 4,464 40.8% 6,271 57.4% 197 10,932 R+16.5
Washington 5,170 48.7% 5,247 49.4% 209 10,626 R+0.7
Carroll 5,302 51.0% 4,922 47.4% 163 10,387 D+3.7
Buchanan 6,050 58.5% 4,139 40.0% 149 10,338 D+18.5
Fayette 5,908 57.6% 4,205 41.0% 146 10,259 D+16.6
Poweshiek 5,519 55.0% 4,340 43.3% 172 10,031 D+11.8
Jones 5,446 54.4% 4,405 44.0% 153 10,004 D+10.4
Jackson 6,102 61.3% 3,673 36.9% 180 9,955 D+24.4
Dickinson 4,625 46.7% 5,162 52.1% 119 9,906 R+5.4
Cedar 5,221 54.0% 4,289 44.4% 155 9,665 D+9.6
Henry 4,349 46.4% 4,822 51.4% 206 9,377 R+5.0
Kossuth 4,625 50.8% 4,329 47.6% 143 9,097 D+3.3
Clayton 5,195 57.8% 3,651 40.6% 143 8,989 D+17.2
Delaware 4,649 52.2% 4,113 46.2% 139 8,901 D+6.0
Hardin 4,393 49.6% 4,315 48.7% 151 8,859 D+0.9
Tama 4,899 55.4% 3,820 43.2% 131 8,850 D+12.2
Jefferson 5,070 58.7% 3,324 38.5% 237 8,631 D+20.2
Iowa 4,202 49.2% 4,188 49.0% 156 8,546 D+0.2
Madison 3,733 44.0% 4,579 54.0% 168 8,480 R+10.0
Buena Vista 4,075 48.4% 4,223 50.2% 120 8,418 R+1.8
Clay 3,925 46.7% 4,355 51.9% 118 8,398 R+5.1
Floyd 4,822 59.6% 3,051 37.7% 218 8,091 D+21.9
Hamilton 4,018 49.7% 3,913 48.4% 147 8,078 D+1.3
Harrison 3,555 46.9% 3,909 51.6% 114 7,578 R+4.7
Page 2,900 39.4% 4,351 59.1% 105 7,356 R+19.7
Cass 3,211 43.7% 4,006 54.5% 133 7,350 R+10.8
O'Brien 2,338 31.9% 4,894 66.7% 101 7,333 R+34.9
Mills 2,976 40.9% 4,183 57.4% 123 7,282 R+16.6
Crawford 3,715 51.7% 3,345 46.5% 131 7,191 D+5.1
Butler 3,364 46.9% 3,700 51.6% 102 7,166 R+4.7
Allamakee 3,971 56.3% 2,965 42.0% 123 7,059 D+14.3
Grundy 2,790 40.9% 3,945 57.8% 93 6,828 R+16.9
Chickasaw 3,923 59.6% 2,557 38.8% 103 6,583 D+20.8
Shelby 2,863 44.4% 3,488 54.1% 102 6,453 R+9.7
Wright 3,102 48.5% 3,198 50.0% 95 6,395 R+1.5
Cherokee 2,890 45.4% 3,372 53.0% 103 6,365 R+7.6
Lyon 1,675 26.9% 4,471 71.9% 71 6,217 R+45.0
Appanoose 2,970 48.1% 3,086 50.0% 120 6,176 R+1.9
Winnebago 3,254 53.5% 2,730 44.9% 98 6,082 D+8.6
Hancock 2,805 47.3% 3,016 50.9% 109 5,930 R+3.6
Union 3,000 50.8% 2,781 47.1% 128 5,909 D+3.7
Guthrie 2,625 44.9% 3,074 52.6% 148 5,847 R+7.7
Mitchell 3,179 55.1% 2,469 42.8% 118 5,766 D+12.3
Keokuk 2,518 47.0% 2,712 50.6% 131 5,361 R+3.6
Montgomery 2,326 44.0% 2,887 54.6% 74 5,287 R+10.6
Calhoun 2,341 45.1% 2,741 52.8% 113 5,195 R+7.7
Franklin 2,575 50.0% 2,501 48.6% 72 5,148 D+1.4
Humboldt 2,160 42.2% 2,895 56.5% 67 5,122 R+14.3
Sac 2,256 44.6% 2,705 53.5% 92 5,053 R+8.9
Emmet 2,570 51.2% 2,373 47.3% 72 5,015 D+3.9
Louisa 2,523 51.3% 2,314 47.0% 83 4,920 D+4.2
Palo Alto 2,428 50.5% 2,294 47.7% 84 4,806 D+2.8
Greene 2,371 49.4% 2,349 48.9% 84 4,804 D+0.5
Monona 2,295 47.9% 2,411 50.3% 90 4,796 R+2.4
Howard 2,941 62.2% 1,722 36.4% 65 4,728 D+25.8
Lucas 2,029 45.4% 2,330 52.1% 112 4,471 R+6.7
Clarke 2,218 49.9% 2,118 47.7% 107 4,443 D+2.3
Worth 2,567 60.3% 1,612 37.9% 78 4,257 D+22.4
Decatur 1,986 48.4% 2,020 49.2% 96 4,102 R+0.8
Adair 1,924 47.5% 2,060 50.8% 69 4,053 R+3.4
Pocahontas 1,800 44.9% 2,138 53.3% 73 4,011 R+8.4
Fremont 1,848 47.5% 1,989 51.1% 57 3,894 R+3.6
Monroe 1,798 46.4% 2,000 51.6% 75 3,873 R+5.2
Davis 1,680 44.0% 2,029 53.2% 106 3,815 R+9.1
Van Buren 1,546 42.8% 1,986 55.0% 76 3,608 R+12.2
Ida 1,454 41.0% 2,036 57.4% 57 3,547 R+16.4
Audubon 1,739 50.6% 1,634 47.6% 62 3,435 D+3.1
Osceola 1,037 33.2% 2,027 64.8% 63 3,127 R+31.7
Taylor 1,347 44.5% 1,607 53.1% 72 3,026 R+8.6
Wayne 1,357 45.5% 1,565 52.5% 58 2,980 R+7.0
Ringgold 1,236 46.0% 1,401 52.1% 52 2,689 R+6.1
Adams 1,118 50.7% 1,046 47.4% 42 2,206 D+3.3

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