George W. Bush carried Iowa R+0.7.

John Kerry (D) vs George W. Bush (R) in Iowa, 2004. The state ran 1.8 points more Democratic than the nation (R+2.5 nationally). A US Senate contest shared the 2004 ballot here.

Nominees: John Kerry (D) · George W. Bush (R)

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Iowa result

1,506,908 votes counted

Kerry (D)

741,898

49.2%

Bush (R)

751,957

49.9%

All others

13,053

0.9%

Margin

R+0.7

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2004 presidential election

Iowa, 2004

BushR+0.7

How it voted

Share of the 2004 vote

George W. Bush ✓Republican	49.9%	751,957
John KerryDemocratic	49.2%	741,898
OtherAll other candidates	0.9%	13,053

D+60

R+60

99 counties, each filled by 2004 D-vs-R margin. Hover any county for its result.

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Iowa's presidential margins

1892–2024, the 2004 contest in context

Iowa's presidential margins

Year	Margin (D minus R)
1892	−5.3%
1896	−12.6%
1900	−18.6%
1904	−32.7%
1908	−15.0%
1912	+13.3%
1916	−11.4%
1920	−45.5%
1924	−38.6%
1928	−24.2%
1932	+17.7%
1936	+11.7%
1940	−4.4%
1944	−4.5%
1948	+2.7%
1952	−28.2%
1956	−18.4%
1960	−13.5%
1964	+24.0%
1968	−12.2%
1972	−17.1%
1976	−1.0%
1980	−12.7%
1984	−7.4%
1988	+10.2%
1992	+6.0%
1996	+10.3%
2000	+0.3%
2004	−0.7%
2008	+9.5%
2012	+5.8%
2016	−9.3%
2020	−8.2%
2024	−13.2%

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County results — 2004

99 counties; every row links to the county's full page.

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County	Won	Margin	Democratic	Republican	Total
Adair County	R	−13.0%	1,844	2,402	4,278
Adams County	R	−14.6%	977	1,317	2,325
Allamakee County	R	−1.1%	3,449	3,530	7,062
Appanoose County	R	−4.3%	3,063	3,340	6,450
Audubon County	R	−9.7%	1,608	1,958	3,592
Benton County	D	+0.7%	6,747	6,658	13,501
Black Hawk County	D	+11.5%	35,392	28,046	63,907
Boone County	D	+1.1%	7,027	6,870	14,009
Bremer County	R	−5.0%	6,025	6,665	12,779
Buchanan County	D	+7.7%	5,608	4,797	10,475
Buena Vista County	R	−16.1%	3,520	4,887	8,490
Butler County	R	−18.9%	3,001	4,417	7,475
Calhoun County	R	−18.3%	2,243	3,255	5,542
Carroll County	R	−10.2%	4,689	5,762	10,524
Cass County	R	−28.1%	2,679	4,796	7,543
Cedar County	R	−1.3%	4,747	4,869	9,694
Cerro Gordo County	D	+9.8%	13,372	10,960	24,516
Cherokee County	R	−11.3%	2,988	3,758	6,796
Chickasaw County	D	+9.8%	3,708	3,040	6,806
Clarke County	D	+2.7%	2,323	2,200	4,566
Clay County	R	−15.7%	3,547	4,898	8,588
Clayton County	D	+4.6%	4,736	4,312	9,168
Clinton County	D	+12.7%	13,813	10,666	24,684
Crawford County	R	−10.1%	3,220	3,955	7,242
Dallas County	R	−16.2%	10,917	15,183	26,293
Davis County	R	−10.6%	1,731	2,148	3,918
Decatur County	R	−5.7%	1,859	2,088	4,011
Delaware County	R	−7.4%	4,227	4,908	9,200
Des Moines County	D	+20.3%	12,456	8,221	20,874
Dickinson County	R	−12.5%	4,140	5,337	9,553
Dubuque County	D	+13.7%	26,561	20,100	47,043
Emmet County	R	−5.7%	2,405	2,697	5,156
Fayette County	D	+0.5%	5,185	5,128	10,392
Floyd County	D	+7.4%	4,349	3,745	8,167
Franklin County	R	−14.3%	2,340	3,128	5,521
Fremont County	R	−21.8%	1,510	2,362	3,911
Greene County	R	−3.1%	2,459	2,618	5,113
Grundy County	R	−29.8%	2,386	4,429	6,849
Guthrie County	R	−11.9%	2,614	3,325	5,994
Hamilton County	R	−5.7%	3,895	4,367	8,335
Hancock County	R	−15.0%	2,484	3,368	5,905
Hardin County	R	−9.6%	4,015	4,875	8,949
Harrison County	R	−23.1%	2,906	4,680	7,680
Henry County	R	−11.6%	4,127	5,220	9,457
Howard County	D	+12.5%	2,614	2,028	4,697
Humboldt County	R	−19.0%	2,146	3,162	5,350
Ida County	R	−24.6%	1,415	2,342	3,774
Iowa County	R	−8.3%	3,841	4,544	8,454
Jackson County	D	+14.1%	5,656	4,242	10,011
Jasper County	D	+4.8%	10,430	9,462	20,062
Jefferson County	D	+10.2%	4,490	3,648	8,281
Johnson County	D	+29.3%	41,847	22,715	65,373
Jones County	D	+2.2%	5,054	4,834	9,978
Keokuk County	R	−15.1%	2,294	3,119	5,480
Kossuth County	R	−9.8%	4,132	5,042	9,258
Lee County	D	+15.0%	10,152	7,472	17,858
Linn County	D	+9.9%	60,442	49,442	110,740
Louisa County	R	−5.6%	2,297	2,572	4,916
Lucas County	R	−12.2%	1,987	2,543	4,571
Lyon County	R	−56.5%	1,303	4,751	6,101
Madison County	R	−14.5%	3,380	4,538	8,004
Mahaska County	R	−28.6%	3,790	6,858	10,728
Marion County	R	−20.5%	6,574	9,990	16,696
Marshall County	R	−0.6%	9,443	9,557	19,164
Mills County	R	−32.4%	2,308	4,556	6,940
Mitchell County	D	+2.5%	2,785	2,646	5,480
Monona County	R	−3.5%	2,397	2,575	5,018
Monroe County	R	−5.3%	1,855	2,067	3,963
Montgomery County	R	−30.6%	1,899	3,601	5,556
Muscatine County	D	+2.8%	9,542	9,020	18,717
O'Brien County	R	−38.8%	2,330	5,328	7,731
Osceola County	R	−41.7%	934	2,295	3,266
Page County	R	−40.4%	2,211	5,243	7,513
Palo Alto County	R	−3.7%	2,482	2,674	5,191
Plymouth County	R	−28.9%	4,278	7,810	12,222
Pocahontas County	R	−14.4%	1,822	2,441	4,313
Polk County	D	+4.6%	105,218	95,828	202,618
Pottawattamie County	R	−18.3%	16,906	24,558	41,820
Poweshiek County	D	+0.8%	5,043	4,965	10,091
Ringgold County	R	−6.5%	1,286	1,466	2,778
Sac County	R	−17.0%	2,215	3,128	5,374
Scott County	D	+2.6%	42,122	39,958	82,722
Shelby County	R	−28.5%	2,355	4,256	6,670
Sioux County	R	−72.2%	2,259	14,229	16,570
Story County	D	+5.5%	23,296	20,819	44,652
Tama County	D	+0.3%	4,487	4,456	9,001
Taylor County	R	−20.6%	1,252	1,908	3,190
Union County	R	−7.0%	2,747	3,165	5,978
Van Buren County	R	−16.8%	1,568	2,211	3,836
Wapello County	D	+10.3%	9,125	7,403	16,707
Warren County	R	−6.2%	10,730	12,160	23,053
Washington County	R	−12.9%	4,595	5,977	10,688
Wayne County	R	−11.3%	1,379	1,733	3,133
Webster County	D	+3.2%	9,561	8,959	18,631
Winnebago County	R	−7.9%	2,707	3,175	5,952
Winneshiek County	D	+0.3%	5,354	5,324	10,784
Woodbury County	R	−2.3%	21,455	22,451	44,195
Worth County	D	+11.9%	2,286	1,795	4,123
Wright County	R	−10.6%	2,930	3,631	6,603