Warren G. Harding carried Iowa R+45.5.

James M. Cox (D) vs Warren G. Harding (R) in Iowa, 1920. The state ran 19.3 points more Republican than the nation (R+26.2 nationally).

Nominees: James M. Cox (D) · Warren G. Harding (R)

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Iowa result

894,965 votes counted

Cox (D)

227,804

25.5%

Harding (R)

634,674

70.9%

All others

32,487

3.6%

Margin

R+45.5

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1920 presidential election

Iowa, 1920

HardingR+45.5

How it voted

Share of the 1920 vote

Warren G. Harding ✓Republican	70.9%	634,674
James M. CoxDemocratic	25.5%	227,804
OtherAll other candidates	3.6%	32,487

D+60

R+60

99 counties, each filled by 1920 D-vs-R margin. Hover any county for its result.

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Iowa's presidential margins

1892–2024, the 1920 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 — 1920

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

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County	Won	Margin	Democratic	Republican	Total
Adair County	R	−49.9%	1,358	4,133	5,563
Adams County	R	−25.8%	1,670	2,845	4,557
Allamakee County	R	−47.4%	1,833	5,192	7,090
Appanoose County	R	−35.2%	2,952	6,382	9,743
Audubon County	R	−35.6%	1,405	2,963	4,378
Benton County	R	−45.6%	2,343	6,539	9,207
Black Hawk County	R	−58.5%	4,000	16,920	22,101
Boone County	R	−48.6%	2,240	7,093	9,980
Bremer County	R	−74.1%	902	6,287	7,269
Buchanan County	R	−59.2%	1,600	6,334	7,997
Buena Vista County	R	−59.4%	1,204	4,927	6,270
Butler County	R	−74.5%	830	5,900	6,806
Calhoun County	R	−55.4%	1,479	5,277	6,858
Carroll County	R	−47.8%	2,174	6,320	8,671
Cass County	R	−58.3%	1,668	6,558	8,383
Cedar County	R	−58.5%	1,420	5,697	7,315
Cerro Gordo County	R	−54.7%	2,302	8,293	10,951
Cherokee County	R	−57.0%	1,211	4,544	5,849
Chickasaw County	R	−34.8%	2,171	4,517	6,744
Clarke County	R	−42.5%	1,257	3,150	4,450
Clay County	R	−62.1%	1,001	4,471	5,585
Clayton County	R	−56.7%	1,808	6,747	8,706
Clinton County	R	−49.0%	3,153	11,746	17,536
Crawford County	R	−41.7%	2,151	5,473	7,972
Dallas County	R	−43.4%	2,577	6,677	9,454
Davis County	R	−13.8%	2,353	3,117	5,535
Decatur County	R	−23.3%	2,592	4,187	6,845
Delaware County	R	−67.3%	1,111	5,880	7,088
Des Moines County	R	−37.2%	3,449	8,287	12,997
Dickinson County	R	−61.9%	760	3,298	4,101
Dubuque County	R	−22.9%	7,636	12,436	21,000
Emmet County	R	−53.6%	991	3,360	4,421
Fayette County	R	−60.6%	1,941	8,265	10,444
Floyd County	R	−71.9%	933	6,106	7,197
Franklin County	R	−74.3%	601	4,397	5,109
Fremont County	R	−19.7%	2,524	3,776	6,364
Greene County	R	−58.8%	1,303	5,102	6,460
Grundy County	R	−72.7%	714	4,662	5,432
Guthrie County	R	−52.0%	1,647	5,338	7,099
Hamilton County	R	−67.1%	1,126	5,924	7,148
Hancock County	R	−64.6%	725	3,617	4,474
Hardin County	R	−70.4%	1,076	6,646	7,915
Harrison County	R	−27.2%	3,479	6,127	9,742
Henry County	R	−45.4%	1,939	5,254	7,306
Howard County	R	−34.8%	1,717	3,601	5,418
Humboldt County	R	−67.1%	681	3,577	4,319
Ida County	R	−52.5%	1,090	3,547	4,684
Iowa County	R	−41.1%	2,019	4,892	6,997
Jackson County	R	−40.1%	1,954	4,763	7,005
Jasper County	R	−36.5%	3,390	7,417	11,029
Jefferson County	R	−50.9%	1,450	4,558	6,108
Johnson County	R	−6.1%	5,032	5,696	10,923
Jones County	R	−41.7%	2,436	5,962	8,461
Keokuk County	R	−37.3%	2,800	6,207	9,135
Kossuth County	R	−55.8%	1,682	6,018	7,769
Lee County	R	−34.2%	5,177	10,763	16,323
Linn County	R	−47.1%	6,932	20,036	27,821
Louisa County	R	−57.2%	932	3,560	4,594
Lucas County	R	−42.0%	1,463	3,775	5,506
Lyon County	R	−65.1%	729	3,633	4,459
Madison County	R	−39.6%	1,899	4,465	6,487
Mahaska County	R	−32.6%	3,339	6,739	10,440
Marion County	R	−16.4%	3,861	5,435	9,599
Marshall County	R	−60.7%	2,166	9,334	11,800
Mills County	R	−39.2%	1,592	3,683	5,338
Mitchell County	R	−69.4%	773	4,476	5,332
Monona County	R	−39.7%	1,960	4,569	6,575
Monroe County	R	−32.9%	2,081	4,500	7,352
Montgomery County	R	−54.9%	1,404	4,980	6,510
Muscatine County	R	−50.4%	2,293	8,115	11,544
O'Brien County	R	−54.6%	1,468	5,137	6,714
Osceola County	R	−55.4%	754	2,717	3,541
Page County	R	−55.0%	1,931	6,949	9,131
Palo Alto County	R	−44.6%	1,467	3,904	5,466
Plymouth County	R	−53.6%	1,801	6,090	7,996
Pocahontas County	R	−41.7%	1,639	4,046	5,774
Polk County	R	−36.7%	16,281	36,073	53,986
Pottawattamie County	R	−32.8%	6,659	13,506	20,887
Poweshiek County	R	−45.3%	2,125	5,806	8,130
Ringgold County	R	−46.6%	1,327	3,702	5,095
Sac County	R	−58.7%	1,268	4,984	6,334
Scott County	R	−38.9%	5,473	16,233	27,631
Shelby County	R	−41.8%	1,882	4,621	6,550
Sioux County	R	−59.6%	1,510	6,068	7,653
Story County	R	−63.1%	1,909	8,713	10,784
Tama County	R	−41.9%	2,552	6,352	9,073
Taylor County	R	−46.9%	1,757	4,997	6,901
Union County	R	−32.9%	2,228	4,466	6,805
Van Buren County	R	−43.4%	1,682	4,321	6,086
Wapello County	R	−39.6%	4,131	9,884	14,537
Warren County	R	−43.1%	2,066	5,323	7,549
Washington County	R	−43.5%	2,257	5,813	8,177
Wayne County	R	−26.6%	2,434	4,234	6,773
Webster County	R	−42.4%	2,804	8,312	12,988
Winnebago County	R	−76.7%	469	3,931	4,514
Winneshiek County	R	−54.0%	1,933	6,684	8,797
Woodbury County	R	−27.5%	9,815	17,603	28,362
Worth County	R	−72.0%	516	3,401	4,009
Wright County	R	−64.0%	1,205	5,739	7,082