William McKinley carried Iowa R+18.6.

William Jennings Bryan (D) vs William McKinley (R) in Iowa, 1900. The state ran 11.3 points more Republican than the nation (R+7.2 nationally).

Nominees: William Jennings Bryan (D) · William McKinley (R)

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Iowa result

530,355 votes counted

Bryan (D)

209,265

39.5%

McKinley (R)

307,808

58.0%

All others

13,282

2.5%

Margin

R+18.6

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1900 presidential election

Iowa, 1900

McKinleyR+18.6

How it voted

Share of the 1900 vote

William McKinley ✓Republican	58.0%	307,808
William J. BryanDemocratic	39.5%	209,265
OtherAll other candidates	2.5%	13,282

D+60

R+60

99 counties, each filled by 1900 D-vs-R margin. Hover any county for its result.

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Iowa's presidential margins

1892–2024, the 1900 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 — 1900

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

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County	Won	Margin	Democratic	Republican	Total
Adair County	R	−17.6%	1,618	2,327	4,022
Adams County	R	−13.1%	1,428	1,873	3,392
Allamakee County	R	−17.8%	1,850	2,659	4,550
Appanoose County	R	−13.3%	2,690	3,538	6,373
Audubon County	R	−16.5%	1,301	1,821	3,147
Benton County	R	−16.3%	2,575	3,609	6,344
Black Hawk County	R	−32.1%	2,512	5,010	7,781
Boone County	R	−28.0%	2,264	4,151	6,741
Bremer County	R	−6.0%	1,929	2,178	4,152
Buchanan County	R	−17.4%	2,053	2,958	5,194
Buena Vista County	R	−45.9%	936	2,632	3,694
Butler County	R	−41.9%	1,167	2,902	4,145
Calhoun County	R	−41.0%	1,224	2,973	4,271
Carroll County	D	+4.5%	2,434	2,224	4,698
Cass County	R	−21.5%	2,010	3,128	5,203
Cedar County	R	−12.3%	2,131	2,740	4,965
Cerro Gordo County	R	−42.1%	1,320	3,345	4,811
Cherokee County	R	−30.6%	1,253	2,432	3,854
Chickasaw County	R	−0.5%	2,063	2,085	4,194
Clarke County	R	−15.1%	1,322	1,800	3,175
Clay County	R	−48.0%	781	2,292	3,150
Clayton County	R	−7.6%	2,884	3,366	6,342
Clinton County	R	−5.6%	4,758	5,344	10,439
Crawford County	D	+6.2%	2,578	2,268	4,961
Dallas County	R	−28.8%	1,940	3,601	5,775
Davis County	D	+12.9%	2,155	1,656	3,873
Decatur County	R	−7.9%	2,058	2,415	4,539
Delaware County	R	−27.7%	1,570	2,805	4,451
Des Moines County	R	−4.8%	3,909	4,315	8,508
Dickinson County	R	−49.1%	445	1,352	1,848
Dubuque County	D	+16.5%	6,655	4,752	11,564
Emmet County	R	−44.6%	595	1,618	2,292
Fayette County	R	−18.7%	2,708	3,984	6,823
Floyd County	R	−36.8%	1,295	2,843	4,208
Franklin County	R	−53.9%	748	2,537	3,322
Fremont County	D	+4.9%	2,399	2,170	4,658
Greene County	R	−33.6%	1,360	2,777	4,215
Grundy County	R	−25.1%	1,203	2,025	3,277
Guthrie County	R	−20.8%	1,824	2,806	4,714
Hamilton County	R	−47.7%	1,134	3,259	4,455
Hancock County	R	−44.3%	827	2,186	3,065
Hardin County	R	−48.0%	1,268	3,741	5,151
Harrison County	R	−7.4%	2,837	3,303	6,291
Henry County	R	−18.3%	1,907	2,794	4,847
Howard County	R	−15.2%	1,420	1,944	3,453
Humboldt County	R	−56.9%	595	2,214	2,843
Ida County	R	−10.0%	1,304	1,599	2,949
Iowa County	R	−8.0%	1,983	2,336	4,433
Jackson County	R	−1.9%	2,854	2,964	5,851
Jasper County	R	−10.2%	3,163	3,894	7,193
Jefferson County	R	−20.6%	1,612	2,482	4,226
Johnson County	D	+2.7%	3,182	3,010	6,258
Jones County	R	−18.8%	2,052	3,021	5,145
Keokuk County	R	−10.9%	2,669	3,339	6,147
Kossuth County	R	−27.2%	1,777	3,122	4,951
Lee County	D	+7.1%	5,182	4,486	9,778
Linn County	R	−20.8%	5,019	7,745	13,106
Louisa County	R	−29.3%	1,172	2,185	3,452
Lucas County	R	−19.1%	1,488	2,225	3,864
Lyon County	R	−12.4%	1,289	1,666	3,029
Madison County	R	−14.7%	1,907	2,590	4,652
Mahaska County	R	−10.6%	3,596	4,480	8,312
Marion County	O	+0.0%	2,950	2,950	6,079
Marshall County	R	−34.0%	2,329	4,878	7,496
Mills County	R	−11.9%	1,733	2,212	4,022
Mitchell County	R	−42.2%	981	2,450	3,480
Monona County	R	−5.4%	1,934	2,161	4,194
Monroe County	R	−12.2%	1,705	2,233	4,326
Montgomery County	R	−32.5%	1,467	2,927	4,486
Muscatine County	R	−12.4%	3,021	3,905	7,110
O'Brien County	R	−23.7%	1,461	2,386	3,901
Osceola County	R	−15.8%	799	1,106	1,944
Page County	R	−27.2%	1,889	3,424	5,643
Palo Alto County	R	−12.5%	1,477	1,908	3,440
Plymouth County	R	−7.9%	2,307	2,712	5,114
Pocahontas County	R	−25.3%	1,287	2,176	3,519
Polk County	R	−33.0%	6,180	12,628	19,511
Pottawattamie County	R	−9.6%	5,373	6,525	12,052
Poweshiek County	R	−28.3%	1,765	3,199	5,074
Ringgold County	R	−27.0%	1,311	2,319	3,729
Sac County	R	−38.0%	1,214	2,786	4,135
Scott County	R	−9.6%	5,157	6,327	12,155
Shelby County	R	−4.1%	2,010	2,182	4,239
Sioux County	R	−24.8%	1,809	3,025	4,903
Story County	R	−48.0%	1,343	4,032	5,607
Tama County	R	−9.0%	2,736	3,290	6,155
Taylor County	R	−16.6%	1,984	2,792	4,877
Union County	R	−5.0%	2,218	2,462	4,841
Van Buren County	R	−14.5%	1,893	2,547	4,516
Wapello County	R	−9.4%	3,902	4,742	8,912
Warren County	R	−21.7%	1,876	2,966	5,014
Washington County	R	−11.6%	2,234	2,844	5,241
Wayne County	R	−6.6%	2,001	2,294	4,430
Webster County	R	−29.3%	2,266	4,221	6,667
Winnebago County	R	−61.2%	474	2,052	2,577
Winneshiek County	R	−30.7%	1,835	3,486	5,386
Woodbury County	R	−18.4%	4,796	7,045	12,243
Worth County	R	−56.1%	475	1,730	2,238
Wright County	R	−52.7%	891	2,990	3,983