1940 Presidential Election Results for Iowa

Click on a county in the table or the map to see demographic data for that county.

County	Turnout	Franklin Roosevelt* (D)		Wendell Willkie (R)		Other		TOTAL
Adair	77%	2,734	41.1%	3,907	58.8%	7	0.1%	6,648
Adams	79%	2,088	39.5%	3,182	60.1%	22	0.4%	5,292
Allamakee	85%	3,258	35.7%	5,840	64.0%	24	0.3%	9,122
Appanoose	78%	6,069	49.7%	6,032	49.4%	101	0.8%	12,202
Audubon	77%	3,236	55.1%	2,632	44.8%	7	0.1%	5,875
Benton	74%	5,363	50.2%	5,298	49.5%	32	0.3%	10,693
Black Hawk	67%	17,305	50.1%	17,132	49.6%	95	0.3%	34,532
Boone	63%	7,168	57.5%	5,227	41.9%	74	0.6%	12,469
Bremer	75%	3,103	36.5%	5,374	63.3%	18	0.2%	8,495
Buchanan	82%	4,649	45.1%	5,630	54.6%	30	0.3%	10,309
Buena Vista	71%	4,784	50.9%	4,576	48.7%	39	0.4%	9,399
Butler	67%	2,760	36.2%	4,848	63.6%	20	0.3%	7,628
Calhoun	71%	4,344	53.2%	3,792	46.5%	25	0.3%	8,161
Carroll	79%	5,526	50.6%	5,376	49.2%	21	0.2%	10,923
Cass	83%	3,763	37.0%	6,377	62.7%	32	0.3%	10,172
Cedar	83%	3,293	37.3%	5,521	62.5%	26	0.3%	8,840
Cerro Gordo	71%	10,839	52.6%	9,728	47.2%	45	0.2%	20,612
Cherokee	67%	3,855	46.3%	4,458	53.5%	19	0.2%	8,332
Chickasaw	90%	3,981	47.3%	4,440	52.7%	2	0.0%	8,423
Clarke	83%	2,513	45.6%	2,962	53.8%	35	0.6%	5,510
Clay	70%	4,328	53.9%	3,673	45.8%	24	0.3%	8,025
Clayton	81%	4,973	40.0%	7,443	59.9%	18	0.1%	12,434
Clinton	80%	10,251	45.6%	12,177	54.2%	50	0.2%	22,478
Crawford	74%	4,130	43.7%	5,284	55.9%	35	0.4%	9,449
Dallas	82%	6,279	49.7%	6,218	49.2%	131	1.0%	12,628
Davis	90%	3,374	52.9%	2,975	46.7%	28	0.4%	6,377
Decatur	78%	3,938	52.9%	3,494	46.9%	16	0.2%	7,448
Delaware	84%	2,985	32.5%	6,175	67.3%	16	0.2%	9,176
Des Moines	75%	6,578	37.3%	10,988	62.3%	59	0.3%	17,625
Dickinson	72%	2,985	52.0%	2,736	47.6%	21	0.4%	5,742
Dubuque	73%	13,805	48.5%	14,590	51.3%	46	0.2%	28,441
Emmet	72%	3,097	50.0%	3,053	49.3%	47	0.8%	6,197
Fayette	77%	6,066	42.3%	8,237	57.4%	39	0.3%	14,342
Floyd	78%	4,167	41.5%	5,829	58.1%	35	0.3%	10,031
Franklin	69%	3,540	48.4%	3,623	49.6%	147	2.0%	7,310
Fremont	82%	3,914	50.4%	3,825	49.3%	25	0.3%	7,764
Greene	69%	3,566	47.5%	3,920	52.2%	20	0.3%	7,506
Grundy	77%	2,745	41.1%	3,908	58.6%	21	0.3%	6,674
Guthrie	74%	3,489	42.3%	4,733	57.3%	33	0.4%	8,255
Hamilton	73%	5,279	55.6%	4,183	44.0%	39	0.4%	9,501
Hancock	74%	3,514	49.0%	3,632	50.6%	27	0.4%	7,173
Hardin	71%	4,764	45.4%	5,692	54.3%	35	0.3%	10,491
Harrison	79%	5,317	46.5%	6,094	53.3%	17	0.1%	11,428
Henry	75%	2,837	32.4%	5,893	67.4%	19	0.2%	8,749
Howard	85%	3,675	49.6%	3,714	50.2%	16	0.2%	7,405
Humboldt	70%	3,268	53.2%	2,853	46.4%	22	0.4%	6,143
Ida	76%	2,306	42.0%	3,166	57.7%	15	0.3%	5,487
Iowa	77%	3,649	43.0%	4,696	55.3%	143	1.7%	8,488
Jackson	83%	4,218	43.7%	5,417	56.1%	26	0.3%	9,661
Jasper	76%	8,129	52.7%	7,240	46.9%	52	0.3%	15,421
Jefferson	78%	3,402	40.8%	4,891	58.7%	43	0.5%	8,336
Johnson	70%	9,017	55.4%	7,206	44.3%	55	0.3%	16,278
Jones	79%	4,273	43.0%	5,630	56.7%	26	0.3%	9,929
Keokuk	83%	4,552	45.6%	5,394	54.0%	42	0.4%	9,988
Kossuth	73%	6,502	53.4%	5,639	46.4%	24	0.2%	12,165
Lee	75%	9,117	46.1%	10,616	53.7%	33	0.2%	19,766
Linn	76%	19,531	45.2%	23,581	54.5%	123	0.3%	43,235
Louisa	80%	2,247	39.9%	3,330	59.2%	50	0.9%	5,627
Lucas	75%	3,255	45.5%	3,806	53.2%	88	1.2%	7,149
Lyon	69%	2,648	40.5%	3,880	59.3%	12	0.2%	6,540
Madison	82%	3,094	40.7%	4,477	58.9%	29	0.4%	7,600
Mahaska	69%	5,757	48.1%	6,123	51.1%	97	0.8%	11,977
Marion	73%	6,915	54.2%	5,763	45.2%	75	0.6%	12,753
Marshall	66%	6,497	43.1%	8,503	56.4%	65	0.4%	15,065
Mills	71%	2,862	42.4%	3,873	57.4%	14	0.2%	6,749
Mitchell	78%	3,025	43.3%	3,947	56.5%	15	0.2%	6,987
Monona	74%	4,783	53.2%	4,192	46.6%	15	0.2%	8,990
Monroe	77%	3,994	54.4%	3,270	44.6%	72	1.0%	7,336
Montgomery	79%	3,332	40.5%	4,848	59.0%	40	0.5%	8,220
Muscatine	74%	5,825	40.4%	8,543	59.2%	53	0.4%	14,421
O'Brien	71%	4,133	46.3%	4,760	53.3%	38	0.4%	8,931
Osceola	69%	2,288	48.2%	2,425	51.1%	29	0.6%	4,742
Page	70%	4,102	35.5%	7,407	64.0%	57	0.5%	11,566
Palo Alto	76%	4,482	57.3%	3,322	42.5%	18	0.2%	7,822
Plymouth	79%	3,831	33.1%	7,725	66.7%	23	0.2%	11,579
Pocahontas	68%	4,118	57.8%	2,985	41.9%	18	0.3%	7,121
Polk	73%	51,647	55.4%	41,245	44.3%	301	0.3%	93,193
Pottawattamie	75%	15,221	48.8%	15,929	51.1%	38	0.1%	31,188
Poweshiek	78%	4,794	49.9%	4,773	49.7%	44	0.5%	9,611
Ringgold	79%	2,374	40.3%	3,507	59.5%	13	0.2%	5,894
Sac	71%	3,754	46.2%	4,358	53.7%	9	0.1%	8,121
Scott	76%	20,996	53.0%	18,504	46.7%	130	0.3%	39,630
Shelby	81%	3,811	45.0%	4,613	54.5%	36	0.4%	8,460
Sioux	70%	4,144	35.3%	7,585	64.6%	21	0.2%	11,750
Story	63%	7,152	47.5%	7,853	52.1%	65	0.4%	15,070
Tama	83%	5,996	50.4%	5,865	49.3%	32	0.3%	11,893
Taylor	78%	2,976	40.1%	4,420	59.6%	25	0.3%	7,421
Union	81%	3,229	37.3%	5,421	62.5%	18	0.2%	8,668
Van Buren	84%	2,416	36.9%	4,108	62.7%	26	0.4%	6,550
Wapello	72%	11,880	56.6%	9,039	43.0%	87	0.4%	21,006
Warren	83%	3,856	43.2%	5,016	56.2%	51	0.6%	8,923
Washington	76%	4,030	41.5%	5,649	58.1%	42	0.4%	9,721
Wayne	82%	3,625	49.0%	3,748	50.6%	28	0.4%	7,401
Webster	69%	10,731	58.4%	7,583	41.3%	52	0.3%	18,366
Winnebago	69%	3,051	47.8%	3,308	51.8%	29	0.5%	6,388
Winneshiek	80%	5,405	46.4%	6,208	53.3%	24	0.2%	11,637
Woodbury	72%	24,457	51.6%	22,832	48.2%	89	0.2%	47,378
Worth	72%	3,007	55.1%	2,434	44.6%	14	0.3%	5,455
Wright	71%	4,871	52.1%	4,443	47.5%	36	0.4%	9,350
TOTAL	74%	578,802	47.6%	632,370	52.0%	4,260	0.4%	1,215,432

1940 President, Adair County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,734	41.1%
Wendell Willkie (R)	3,907	58.8%
Other	7	0.1%
TOTAL	6,648
Turnout: 77% Diff (St): 7 Diff (US): 14

1940 President, Adams County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,088	39.5%
Wendell Willkie (R)	3,182	60.1%
Other	22	0.4%
TOTAL	5,292
Turnout: 79% Diff (St): 8 Diff (US): 15

1940 President, Allamakee County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,258	35.7%
Wendell Willkie (R)	5,840	64.0%
Other	24	0.3%
TOTAL	9,122
Turnout: 85% Diff (St): 12 Diff (US): 19

1940 President, Appanoose County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	6,069	49.7%
Wendell Willkie (R)	6,032	49.4%
Other	101	0.8%
TOTAL	12,202
Turnout: 78% Diff (St): -3 Diff (US): 5

1940 President, Audubon County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,236	55.1%
Wendell Willkie (R)	2,632	44.8%
Other	7	0.1%
TOTAL	5,875
Turnout: 77% Diff (St): -7 Diff (US): 0

1940 President, Benton County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	5,363	50.2%
Wendell Willkie (R)	5,298	49.5%
Other	32	0.3%
TOTAL	10,693
Turnout: 74% Diff (St): -2 Diff (US): 5

1940 President, Black Hawk County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	17,305	50.1%
Wendell Willkie (R)	17,132	49.6%
Other	95	0.3%
TOTAL	34,532
Turnout: 67% Diff (St): -2 Diff (US): 5

1940 President, Boone County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	7,168	57.5%
Wendell Willkie (R)	5,227	41.9%
Other	74	0.6%
TOTAL	12,469
Turnout: 63% Diff (St): -10 Diff (US): -3

1940 President, Bremer County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,103	36.5%
Wendell Willkie (R)	5,374	63.3%
Other	18	0.2%
TOTAL	8,495
Turnout: 75% Diff (St): 11 Diff (US): 18

1940 President, Buchanan County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,649	45.1%
Wendell Willkie (R)	5,630	54.6%
Other	30	0.3%
TOTAL	10,309
Turnout: 82% Diff (St): 3 Diff (US): 10

1940 President, Buena Vista County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,784	50.9%
Wendell Willkie (R)	4,576	48.7%
Other	39	0.4%
TOTAL	9,399
Turnout: 71% Diff (St): -3 Diff (US): 4

1940 President, Butler County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,760	36.2%
Wendell Willkie (R)	4,848	63.6%
Other	20	0.3%
TOTAL	7,628
Turnout: 67% Diff (St): 12 Diff (US): 19

1940 President, Calhoun County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,344	53.2%
Wendell Willkie (R)	3,792	46.5%
Other	25	0.3%
TOTAL	8,161
Turnout: 71% Diff (St): -6 Diff (US): 2

1940 President, Carroll County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	5,526	50.6%
Wendell Willkie (R)	5,376	49.2%
Other	21	0.2%
TOTAL	10,923
Turnout: 79% Diff (St): -3 Diff (US): 4

1940 President, Cass County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,763	37.0%
Wendell Willkie (R)	6,377	62.7%
Other	32	0.3%
TOTAL	10,172
Turnout: 83% Diff (St): 11 Diff (US): 18

1940 President, Cedar County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,293	37.3%
Wendell Willkie (R)	5,521	62.5%
Other	26	0.3%
TOTAL	8,840
Turnout: 83% Diff (St): 10 Diff (US): 18

1940 President, Cerro Gordo County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	10,839	52.6%
Wendell Willkie (R)	9,728	47.2%
Other	45	0.2%
TOTAL	20,612
Turnout: 71% Diff (St): -5 Diff (US): 2

1940 President, Cherokee County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,855	46.3%
Wendell Willkie (R)	4,458	53.5%
Other	19	0.2%
TOTAL	8,332
Turnout: 67% Diff (St): 1 Diff (US): 9

1940 President, Chickasaw County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,981	47.3%
Wendell Willkie (R)	4,440	52.7%
Other	2	0.0%
TOTAL	8,423
Turnout: 90% Diff (St): 1 Diff (US): 8

1940 President, Clarke County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,513	45.6%
Wendell Willkie (R)	2,962	53.8%
Other	35	0.6%
TOTAL	5,510
Turnout: 83% Diff (St): 2 Diff (US): 9

1940 President, Clay County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,328	53.9%
Wendell Willkie (R)	3,673	45.8%
Other	24	0.3%
TOTAL	8,025
Turnout: 70% Diff (St): -6 Diff (US): 1

1940 President, Clayton County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,973	40.0%
Wendell Willkie (R)	7,443	59.9%
Other	18	0.1%
TOTAL	12,434
Turnout: 81% Diff (St): 8 Diff (US): 15

1940 President, Clinton County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	10,251	45.6%
Wendell Willkie (R)	12,177	54.2%
Other	50	0.2%
TOTAL	22,478
Turnout: 80% Diff (St): 2 Diff (US): 9

1940 President, Crawford County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,130	43.7%
Wendell Willkie (R)	5,284	55.9%
Other	35	0.4%
TOTAL	9,449
Turnout: 74% Diff (St): 4 Diff (US): 11

1940 President, Dallas County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	6,279	49.7%
Wendell Willkie (R)	6,218	49.2%
Other	131	1.0%
TOTAL	12,628
Turnout: 82% Diff (St): -3 Diff (US): 4

1940 President, Davis County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,374	52.9%
Wendell Willkie (R)	2,975	46.7%
Other	28	0.4%
TOTAL	6,377
Turnout: 90% Diff (St): -5 Diff (US): 2

1940 President, Decatur County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,938	52.9%
Wendell Willkie (R)	3,494	46.9%
Other	16	0.2%
TOTAL	7,448
Turnout: 78% Diff (St): -5 Diff (US): 2

1940 President, Delaware County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,985	32.5%
Wendell Willkie (R)	6,175	67.3%
Other	16	0.2%
TOTAL	9,176
Turnout: 84% Diff (St): 15 Diff (US): 22

1940 President, Des Moines County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	6,578	37.3%
Wendell Willkie (R)	10,988	62.3%
Other	59	0.3%
TOTAL	17,625
Turnout: 75% Diff (St): 10 Diff (US): 18

1940 President, Dickinson County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,985	52.0%
Wendell Willkie (R)	2,736	47.6%
Other	21	0.4%
TOTAL	5,742
Turnout: 72% Diff (St): -4 Diff (US): 3

1940 President, Dubuque County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	13,805	48.5%
Wendell Willkie (R)	14,590	51.3%
Other	46	0.2%
TOTAL	28,441
Turnout: 73% Diff (St): -1 Diff (US): 6

1940 President, Emmet County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,097	50.0%
Wendell Willkie (R)	3,053	49.3%
Other	47	0.8%
TOTAL	6,197
Turnout: 72% Diff (St): -3 Diff (US): 4

1940 President, Fayette County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	6,066	42.3%
Wendell Willkie (R)	8,237	57.4%
Other	39	0.3%
TOTAL	14,342
Turnout: 77% Diff (St): 5 Diff (US): 13

1940 President, Floyd County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,167	41.5%
Wendell Willkie (R)	5,829	58.1%
Other	35	0.3%
TOTAL	10,031
Turnout: 78% Diff (St): 6 Diff (US): 13

1940 President, Franklin County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,540	48.4%
Wendell Willkie (R)	3,623	49.6%
Other	147	2.0%
TOTAL	7,310
Turnout: 69% Diff (St): -2 Diff (US): 5

1940 President, Fremont County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,914	50.4%
Wendell Willkie (R)	3,825	49.3%
Other	25	0.3%
TOTAL	7,764
Turnout: 82% Diff (St): -3 Diff (US): 4

1940 President, Greene County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,566	47.5%
Wendell Willkie (R)	3,920	52.2%
Other	20	0.3%
TOTAL	7,506
Turnout: 69% Diff (St): 0 Diff (US): 7

1940 President, Grundy County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,745	41.1%
Wendell Willkie (R)	3,908	58.6%
Other	21	0.3%
TOTAL	6,674
Turnout: 77% Diff (St): 7 Diff (US): 14

1940 President, Guthrie County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,489	42.3%
Wendell Willkie (R)	4,733	57.3%
Other	33	0.4%
TOTAL	8,255
Turnout: 74% Diff (St): 5 Diff (US): 13

1940 President, Hamilton County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	5,279	55.6%
Wendell Willkie (R)	4,183	44.0%
Other	39	0.4%
TOTAL	9,501
Turnout: 73% Diff (St): -8 Diff (US): -1

1940 President, Hancock County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,514	49.0%
Wendell Willkie (R)	3,632	50.6%
Other	27	0.4%
TOTAL	7,173
Turnout: 74% Diff (St): -1 Diff (US): 6

1940 President, Hardin County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,764	45.4%
Wendell Willkie (R)	5,692	54.3%
Other	35	0.3%
TOTAL	10,491
Turnout: 71% Diff (St): 2 Diff (US): 9

1940 President, Harrison County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	5,317	46.5%
Wendell Willkie (R)	6,094	53.3%
Other	17	0.1%
TOTAL	11,428
Turnout: 79% Diff (St): 1 Diff (US): 9

1940 President, Henry County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,837	32.4%
Wendell Willkie (R)	5,893	67.4%
Other	19	0.2%
TOTAL	8,749
Turnout: 75% Diff (St): 15 Diff (US): 23

1940 President, Howard County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,675	49.6%
Wendell Willkie (R)	3,714	50.2%
Other	16	0.2%
TOTAL	7,405
Turnout: 85% Diff (St): -2 Diff (US): 5

1940 President, Humboldt County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,268	53.2%
Wendell Willkie (R)	2,853	46.4%
Other	22	0.4%
TOTAL	6,143
Turnout: 70% Diff (St): -6 Diff (US): 2

1940 President, Ida County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,306	42.0%
Wendell Willkie (R)	3,166	57.7%
Other	15	0.3%
TOTAL	5,487
Turnout: 76% Diff (St): 6 Diff (US): 13

1940 President, Iowa County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,649	43.0%
Wendell Willkie (R)	4,696	55.3%
Other	143	1.7%
TOTAL	8,488
Turnout: 77% Diff (St): 3 Diff (US): 11

1940 President, Jackson County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,218	43.7%
Wendell Willkie (R)	5,417	56.1%
Other	26	0.3%
TOTAL	9,661
Turnout: 83% Diff (St): 4 Diff (US): 11

1940 President, Jasper County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	8,129	52.7%
Wendell Willkie (R)	7,240	46.9%
Other	52	0.3%
TOTAL	15,421
Turnout: 76% Diff (St): -5 Diff (US): 2

1940 President, Jefferson County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,402	40.8%
Wendell Willkie (R)	4,891	58.7%
Other	43	0.5%
TOTAL	8,336
Turnout: 78% Diff (St): 7 Diff (US): 14

1940 President, Johnson County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	9,017	55.4%
Wendell Willkie (R)	7,206	44.3%
Other	55	0.3%
TOTAL	16,278
Turnout: 70% Diff (St): -8 Diff (US): -1

1940 President, Jones County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,273	43.0%
Wendell Willkie (R)	5,630	56.7%
Other	26	0.3%
TOTAL	9,929
Turnout: 79% Diff (St): 5 Diff (US): 12

1940 President, Keokuk County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,552	45.6%
Wendell Willkie (R)	5,394	54.0%
Other	42	0.4%
TOTAL	9,988
Turnout: 83% Diff (St): 2 Diff (US): 9

1940 President, Kossuth County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	6,502	53.4%
Wendell Willkie (R)	5,639	46.4%
Other	24	0.2%
TOTAL	12,165
Turnout: 73% Diff (St): -6 Diff (US): 2

1940 President, Lee County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	9,117	46.1%
Wendell Willkie (R)	10,616	53.7%
Other	33	0.2%
TOTAL	19,766
Turnout: 75% Diff (St): 2 Diff (US): 9

1940 President, Linn County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	19,531	45.2%
Wendell Willkie (R)	23,581	54.5%
Other	123	0.3%
TOTAL	43,235
Turnout: 76% Diff (St): 3 Diff (US): 10

1940 President, Louisa County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,247	39.9%
Wendell Willkie (R)	3,330	59.2%
Other	50	0.9%
TOTAL	5,627
Turnout: 80% Diff (St): 7 Diff (US): 14

1940 President, Lucas County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,255	45.5%
Wendell Willkie (R)	3,806	53.2%
Other	88	1.2%
TOTAL	7,149
Turnout: 75% Diff (St): 1 Diff (US): 8

1940 President, Lyon County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,648	40.5%
Wendell Willkie (R)	3,880	59.3%
Other	12	0.2%
TOTAL	6,540
Turnout: 69% Diff (St): 7 Diff (US): 15

1940 President, Madison County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,094	40.7%
Wendell Willkie (R)	4,477	58.9%
Other	29	0.4%
TOTAL	7,600
Turnout: 82% Diff (St): 7 Diff (US): 14

1940 President, Mahaska County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	5,757	48.1%
Wendell Willkie (R)	6,123	51.1%
Other	97	0.8%
TOTAL	11,977
Turnout: 69% Diff (St): -1 Diff (US): 6

1940 President, Marion County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	6,915	54.2%
Wendell Willkie (R)	5,763	45.2%
Other	75	0.6%
TOTAL	12,753
Turnout: 73% Diff (St): -7 Diff (US): 0

1940 President, Marshall County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	6,497	43.1%
Wendell Willkie (R)	8,503	56.4%
Other	65	0.4%
TOTAL	15,065
Turnout: 66% Diff (St): 4 Diff (US): 12

1940 President, Mills County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,862	42.4%
Wendell Willkie (R)	3,873	57.4%
Other	14	0.2%
TOTAL	6,749
Turnout: 71% Diff (St): 5 Diff (US): 13

1940 President, Mitchell County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,025	43.3%
Wendell Willkie (R)	3,947	56.5%
Other	15	0.2%
TOTAL	6,987
Turnout: 78% Diff (St): 4 Diff (US): 12

1940 President, Monona County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,783	53.2%
Wendell Willkie (R)	4,192	46.6%
Other	15	0.2%
TOTAL	8,990
Turnout: 74% Diff (St): -5 Diff (US): 2

1940 President, Monroe County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,994	54.4%
Wendell Willkie (R)	3,270	44.6%
Other	72	1.0%
TOTAL	7,336
Turnout: 77% Diff (St): -7 Diff (US): 0

1940 President, Montgomery County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,332	40.5%
Wendell Willkie (R)	4,848	59.0%
Other	40	0.5%
TOTAL	8,220
Turnout: 79% Diff (St): 7 Diff (US): 14

1940 President, Muscatine County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	5,825	40.4%
Wendell Willkie (R)	8,543	59.2%
Other	53	0.4%
TOTAL	14,421
Turnout: 74% Diff (St): 7 Diff (US): 14

1940 President, O'Brien County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,133	46.3%
Wendell Willkie (R)	4,760	53.3%
Other	38	0.4%
TOTAL	8,931
Turnout: 71% Diff (St): 1 Diff (US): 8

1940 President, Osceola County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,288	48.2%
Wendell Willkie (R)	2,425	51.1%
Other	29	0.6%
TOTAL	4,742
Turnout: 69% Diff (St): -1 Diff (US): 6

1940 President, Page County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,102	35.5%
Wendell Willkie (R)	7,407	64.0%
Other	57	0.5%
TOTAL	11,566
Turnout: 70% Diff (St): 12 Diff (US): 19

1940 President, Palo Alto County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,482	57.3%
Wendell Willkie (R)	3,322	42.5%
Other	18	0.2%
TOTAL	7,822
Turnout: 76% Diff (St): -10 Diff (US): -2

1940 President, Plymouth County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,831	33.1%
Wendell Willkie (R)	7,725	66.7%
Other	23	0.2%
TOTAL	11,579
Turnout: 79% Diff (St): 15 Diff (US): 22

1940 President, Pocahontas County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,118	57.8%
Wendell Willkie (R)	2,985	41.9%
Other	18	0.3%
TOTAL	7,121
Turnout: 68% Diff (St): -10 Diff (US): -3

1940 President, Polk County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	51,647	55.4%
Wendell Willkie (R)	41,245	44.3%
Other	301	0.3%
TOTAL	93,193
Turnout: 73% Diff (St): -8 Diff (US): -1

1940 President, Pottawattamie County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	15,221	48.8%
Wendell Willkie (R)	15,929	51.1%
Other	38	0.1%
TOTAL	31,188
Turnout: 75% Diff (St): -1 Diff (US): 6

1940 President, Poweshiek County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,794	49.9%
Wendell Willkie (R)	4,773	49.7%
Other	44	0.5%
TOTAL	9,611
Turnout: 78% Diff (St): -2 Diff (US): 5

1940 President, Ringgold County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,374	40.3%
Wendell Willkie (R)	3,507	59.5%
Other	13	0.2%
TOTAL	5,894
Turnout: 79% Diff (St): 7 Diff (US): 15

1940 President, Sac County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,754	46.2%
Wendell Willkie (R)	4,358	53.7%
Other	9	0.1%
TOTAL	8,121
Turnout: 71% Diff (St): 2 Diff (US): 9

1940 President, Scott County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	20,996	53.0%
Wendell Willkie (R)	18,504	46.7%
Other	130	0.3%
TOTAL	39,630
Turnout: 76% Diff (St): -5 Diff (US): 2

1940 President, Shelby County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,811	45.0%
Wendell Willkie (R)	4,613	54.5%
Other	36	0.4%
TOTAL	8,460
Turnout: 81% Diff (St): 2 Diff (US): 10

1940 President, Sioux County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,144	35.3%
Wendell Willkie (R)	7,585	64.6%
Other	21	0.2%
TOTAL	11,750
Turnout: 70% Diff (St): 13 Diff (US): 20

1940 President, Story County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	7,152	47.5%
Wendell Willkie (R)	7,853	52.1%
Other	65	0.4%
TOTAL	15,070
Turnout: 63% Diff (St): 0 Diff (US): 7

1940 President, Tama County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	5,996	50.4%
Wendell Willkie (R)	5,865	49.3%
Other	32	0.3%
TOTAL	11,893
Turnout: 83% Diff (St): -3 Diff (US): 5

1940 President, Taylor County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,976	40.1%
Wendell Willkie (R)	4,420	59.6%
Other	25	0.3%
TOTAL	7,421
Turnout: 78% Diff (St): 8 Diff (US): 15

1940 President, Union County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,229	37.3%
Wendell Willkie (R)	5,421	62.5%
Other	18	0.2%
TOTAL	8,668
Turnout: 81% Diff (St): 11 Diff (US): 18

1940 President, Van Buren County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	2,416	36.9%
Wendell Willkie (R)	4,108	62.7%
Other	26	0.4%
TOTAL	6,550
Turnout: 84% Diff (St): 11 Diff (US): 18

1940 President, Wapello County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	11,880	56.6%
Wendell Willkie (R)	9,039	43.0%
Other	87	0.4%
TOTAL	21,006
Turnout: 72% Diff (St): -9 Diff (US): -2

1940 President, Warren County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,856	43.2%
Wendell Willkie (R)	5,016	56.2%
Other	51	0.6%
TOTAL	8,923
Turnout: 83% Diff (St): 4 Diff (US): 11

1940 President, Washington County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,030	41.5%
Wendell Willkie (R)	5,649	58.1%
Other	42	0.4%
TOTAL	9,721
Turnout: 76% Diff (St): 6 Diff (US): 13

1940 President, Wayne County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,625	49.0%
Wendell Willkie (R)	3,748	50.6%
Other	28	0.4%
TOTAL	7,401
Turnout: 82% Diff (St): -1 Diff (US): 6

1940 President, Webster County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	10,731	58.4%
Wendell Willkie (R)	7,583	41.3%
Other	52	0.3%
TOTAL	18,366
Turnout: 69% Diff (St): -11 Diff (US): -4

1940 President, Winnebago County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,051	47.8%
Wendell Willkie (R)	3,308	51.8%
Other	29	0.5%
TOTAL	6,388
Turnout: 69% Diff (St): 0 Diff (US): 7

1940 President, Winneshiek County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	5,405	46.4%
Wendell Willkie (R)	6,208	53.3%
Other	24	0.2%
TOTAL	11,637
Turnout: 80% Diff (St): 1 Diff (US): 9

1940 President, Woodbury County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	24,457	51.6%
Wendell Willkie (R)	22,832	48.2%
Other	89	0.2%
TOTAL	47,378
Turnout: 72% Diff (St): -4 Diff (US): 3

1940 President, Worth County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	3,007	55.1%
Wendell Willkie (R)	2,434	44.6%
Other	14	0.3%
TOTAL	5,455
Turnout: 72% Diff (St): -7 Diff (US): 0

1940 President, Wright County
Candidate	Votes	Pct
Franklin Roosevelt* (D)	4,871	52.1%
Wendell Willkie (R)	4,443	47.5%
Other	36	0.4%
TOTAL	9,350
Turnout: 71% Diff (St): -5 Diff (US): 3

* incumbent