Barack Obama carried Iowa D+5.8.

Barack Obama (D) vs Mitt Romney (R) in Iowa, 2012. The state ran 2.0 points more Democratic than the nation (D+3.9 nationally).

Nominees: Barack Obama (D) · Mitt Romney (R)

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Iowa result

1,582,180 votes counted

Obama (D)

822,544

52.0%

Romney (R)

730,617

46.2%

All others

29,019

1.8%

Margin

D+5.8

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2012 presidential election

Iowa, 2012

ObamaD+5.8

How it voted

Share of the 2012 vote

Barack Obama ✓Democratic	52.0%	822,544
Mitt RomneyRepublican	46.2%	730,617
OtherAll other candidates	1.8%	29,019

D+60

R+60

99 counties, each filled by 2012 D-vs-R margin. Hover any county for its result.

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Iowa's presidential margins

1892–2024, the 2012 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 — 2012

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

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County	Won	Margin	Democratic	Republican	Total
Adair County	R	−8.1%	1,790	2,114	3,996
Adams County	R	−3.7%	1,028	1,108	2,185
Allamakee County	D	+4.2%	3,553	3,264	6,934
Appanoose County	R	−3.4%	2,951	3,161	6,245
Audubon County	R	−5.5%	1,611	1,802	3,457
Benton County	R	−0.6%	6,862	6,940	14,023
Black Hawk County	D	+20.2%	39,821	26,235	67,141
Boone County	D	+6.6%	7,512	6,556	14,388
Bremer County	D	+2.7%	6,763	6,405	13,346
Buchanan County	D	+13.9%	5,911	4,450	10,535
Buena Vista County	R	−10.2%	3,700	4,554	8,383
Butler County	R	−10.3%	3,329	4,106	7,545
Calhoun County	R	−12.5%	2,238	2,891	5,230
Carroll County	R	−6.1%	4,947	5,601	10,674
Cass County	R	−18.9%	2,858	4,217	7,205
Cedar County	D	+4.6%	4,972	4,529	9,649
Cerro Gordo County	D	+13.4%	13,316	10,128	23,824
Cherokee County	R	−16.0%	2,634	3,662	6,415
Chickasaw County	D	+11.1%	3,554	2,836	6,484
Clarke County	D	+1.5%	2,189	2,124	4,430
Clay County	R	−18.4%	3,385	4,951	8,502
Clayton County	D	+7.0%	4,806	4,164	9,138
Clinton County	D	+22.8%	15,141	9,432	25,000
Crawford County	R	−7.8%	3,066	3,595	6,752
Dallas County	R	−11.6%	16,576	20,988	38,116
Davis County	R	−16.4%	1,520	2,138	3,773
Decatur County	R	−4.1%	1,791	1,947	3,833
Delaware County	R	−0.2%	4,616	4,636	9,378
Des Moines County	D	+18.4%	11,888	8,136	20,385
Dickinson County	R	−17.9%	4,095	5,912	10,159
Dubuque County	D	+14.7%	28,768	21,280	50,894
Emmet County	R	−8.7%	2,099	2,507	4,687
Fayette County	D	+12.0%	5,732	4,492	10,366
Floyd County	D	+14.6%	4,680	3,472	8,257
Franklin County	R	−10.7%	2,266	2,823	5,186
Fremont County	R	−9.1%	1,637	1,972	3,668
Greene County	R	−0.1%	2,375	2,380	4,846
Grundy County	R	−22.7%	2,635	4,215	6,962
Guthrie County	R	−10.2%	2,569	3,171	5,888
Hamilton County	R	−2.6%	3,782	3,991	7,927
Hancock County	R	−13.4%	2,521	3,317	5,925
Hardin County	R	−6.7%	4,075	4,670	8,898
Harrison County	R	−12.7%	3,136	4,065	7,322
Henry County	R	−5.9%	4,460	5,035	9,697
Howard County	D	+20.9%	2,768	1,795	4,645
Humboldt County	R	−21.8%	1,972	3,099	5,158
Ida County	R	−26.3%	1,321	2,286	3,663
Iowa County	R	−4.8%	4,144	4,569	8,866
Jackson County	D	+16.9%	5,907	4,177	10,242
Jasper County	D	+7.1%	10,257	8,877	19,515
Jefferson County	D	+16.0%	4,798	3,436	8,530
Johnson County	D	+35.5%	50,666	23,698	75,977
Jones County	D	+7.8%	5,534	4,721	10,449
Keokuk County	R	−10.3%	2,303	2,843	5,266
Kossuth County	R	−12.2%	3,850	4,937	8,923
Lee County	D	+15.5%	10,714	7,785	18,911
Linn County	D	+17.7%	68,581	47,622	118,453
Louisa County	D	+0.6%	2,452	2,420	4,968
Lucas County	R	−6.2%	1,987	2,254	4,323
Lyon County	R	−54.6%	1,423	4,978	6,509
Madison County	R	−11.9%	3,630	4,638	8,458
Mahaska County	R	−20.5%	4,213	6,448	10,883
Marion County	R	−13.1%	7,507	9,828	17,687
Marshall County	D	+9.4%	10,257	8,472	19,064
Mills County	R	−19.0%	2,848	4,216	7,212
Mitchell County	D	+3.4%	2,831	2,643	5,586
Monona County	R	−9.6%	2,101	2,557	4,742
Monroe County	R	−7.7%	1,731	2,026	3,830
Montgomery County	R	−21.5%	1,922	3,001	5,025
Muscatine County	D	+15.9%	11,323	8,168	19,865
O'Brien County	R	−44.9%	1,969	5,266	7,341
Osceola County	R	−41.3%	912	2,230	3,194
Page County	R	−24.5%	2,613	4,348	7,079
Palo Alto County	R	−10.7%	2,139	2,660	4,887
Plymouth County	R	−34.2%	4,164	8,597	12,950
Pocahontas County	R	−21.7%	1,523	2,396	4,032
Polk County	D	+14.1%	128,465	96,096	228,882
Pottawattamie County	R	−5.2%	19,644	21,860	42,301
Poweshiek County	D	+9.4%	5,357	4,424	9,975
Ringgold County	R	−7.0%	1,186	1,368	2,599
Sac County	R	−18.4%	2,122	3,094	5,291
Scott County	D	+13.7%	50,652	38,251	90,263
Shelby County	R	−22.2%	2,469	3,911	6,483
Sioux County	R	−67.6%	2,700	14,407	17,308
Story County	D	+13.8%	26,192	19,668	47,150
Tama County	D	+7.4%	4,768	4,098	9,017
Taylor County	R	−14.1%	1,262	1,683	2,995
Union County	D	+3.9%	3,043	2,813	5,957
Van Buren County	R	−18.5%	1,402	2,064	3,569
Wapello County	D	+11.9%	8,663	6,789	15,770
Warren County	R	−1.9%	12,551	13,052	26,072
Washington County	R	−4.1%	5,115	5,562	11,004
Wayne County	R	−11.4%	1,251	1,583	2,900
Webster County	D	+5.8%	9,537	8,469	18,292
Winnebago County	R	−0.1%	2,903	2,906	5,918
Winneshiek County	D	+14.7%	6,256	4,622	11,084
Woodbury County	D	+1.0%	22,302	21,841	45,019
Worth County	D	+14.5%	2,350	1,744	4,172
Wright County	R	−8.2%	2,836	3,349	6,278