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United States · Election results history · 1942 Senate · Iowa
Election 1942 Results

Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.

1942 US Senate election in Iowa

George A. Wilson (Republican) beat Clyde L. Herring (Democrat) in Iowa in 1942, 58.0% to 41.7%, a margin of 16.3 points and 115,139 votes.

Iowa changed party: in 1936 it went Democratic, for Clyde L. Herring.

Republicans led in 94 of the 99 counties as they stood then and Democrats in 5. The largest, Polk, cast 49,141 votes and went to the Democrat by 3.0 points. The closest was Kossuth, where 47 votes separated the two parties.

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Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.

Senate

CandidatePartyVotesShare
George A. Wilson won Republican 410,333 58.0%
Clyde L. Herring Democratic 295,194 41.7%
All other candidates 2,282 0.3%
Total707,809

Every county

CountyDemocratRepublicanOthersTotalMargin
Polk 25,194 51.3% 23,739 48.3% 208 49,141 D+3.0
Woodbury 9,434 41.0% 13,519 58.8% 35 22,988 R+17.8
Linn 8,480 36.9% 14,382 62.7% 91 22,953 R+25.7
Scott 8,059 43.8% 10,292 56.0% 33 18,384 R+12.1
Black Hawk 6,957 41.0% 9,899 58.4% 108 16,964 R+17.3
Dubuque 8,135 48.5% 8,557 51.0% 91 16,783 R+2.5
Pottawattamie 5,493 37.4% 9,174 62.5% 20 14,687 R+25.1
Cerro Gordo 6,747 52.0% 6,204 47.8% 21 12,972 D+4.2
Clinton 4,943 38.6% 7,843 61.2% 26 12,812 R+22.6
Wapello 5,888 48.1% 6,323 51.6% 36 12,247 R+3.6
Lee 4,900 41.5% 6,885 58.3% 21 11,806 R+16.8
Johnson 5,980 56.4% 4,623 43.6% 7 10,610 D+12.8
Webster 4,908 46.3% 5,624 53.1% 62 10,594 R+6.8
Des Moines 3,643 36.7% 6,252 62.9% 40 9,935 R+26.3
Jasper 4,009 42.6% 5,371 57.0% 36 9,416 R+14.5
Marion 4,277 49.1% 4,391 50.4% 47 8,715 R+1.3
Marshall 2,903 34.3% 5,531 65.3% 34 8,468 R+31.0
Tama 3,758 45.3% 4,528 54.5% 16 8,302 R+9.3
Story 3,360 40.7% 4,845 58.7% 46 8,251 R+18.0
Fayette 3,217 39.4% 4,916 60.2% 32 8,165 R+20.8
Kossuth 4,028 49.7% 4,075 50.3% 2 8,105 R+0.6
Winneshiek 3,745 46.8% 4,244 53.0% 13 8,002 R+6.2
Muscatine 2,772 35.1% 5,077 64.3% 45 7,894 R+29.2
Clayton 3,252 42.5% 4,402 57.5% 6 7,660 R+15.0
Mahaska 3,077 41.4% 4,276 57.5% 84 7,437 R+16.1
Appanoose 3,169 43.2% 4,150 56.5% 23 7,342 R+13.4
Dallas 2,906 40.0% 4,312 59.4% 43 7,261 R+19.4
Boone 2,968 41.1% 4,205 58.3% 42 7,215 R+17.1
Keokuk 3,085 43.8% 3,933 55.9% 22 7,040 R+12.0
Carroll 3,488 49.6% 3,539 50.3% 8 7,035 R+0.7
Buchanan 2,922 42.6% 3,924 57.2% 18 6,864 R+14.6
Allamakee 2,637 38.9% 4,134 61.0% 11 6,782 R+22.1
Plymouth 2,130 31.6% 4,614 68.4% 6 6,750 R+36.8
Harrison 2,763 41.3% 3,926 58.6% 7 6,696 R+17.4
Cass 2,463 37.5% 4,097 62.4% 6 6,566 R+24.9
Jackson 3,027 47.9% 3,280 51.9% 13 6,320 R+4.0
Hardin 2,338 37.3% 3,894 62.1% 42 6,274 R+24.8
Page 1,687 26.9% 4,546 72.6% 33 6,266 R+45.6
Hamilton 2,707 43.5% 3,493 56.1% 22 6,222 R+12.6
Poweshiek 2,613 42.3% 3,552 57.4% 18 6,183 R+15.2
Jones 2,468 40.4% 3,644 59.6% 3 6,115 R+19.2
Sioux 1,580 25.9% 4,518 74.0% 10 6,108 R+48.1
Benton 2,744 45.8% 3,221 53.8% 25 5,990 R+8.0
Union 2,196 36.9% 3,746 63.0% 7 5,949 R+26.1
Washington 1,911 33.0% 3,858 66.6% 23 5,792 R+33.6
Henry 1,771 30.7% 3,985 69.0% 21 5,777 R+38.3
Warren 2,336 40.5% 3,396 58.8% 39 5,771 R+18.4
Iowa 2,497 43.4% 3,222 56.1% 29 5,748 R+12.6
Floyd 1,939 34.1% 3,734 65.6% 16 5,689 R+31.6
Chickasaw 2,697 47.4% 2,976 52.4% 11 5,684 R+4.9
Delaware 1,820 32.1% 3,841 67.7% 16 5,677 R+35.6
Wright 2,269 40.2% 3,353 59.5% 18 5,640 R+19.2
Cedar 1,949 35.5% 3,529 64.3% 7 5,485 R+28.8
Monona 2,370 43.3% 3,098 56.7% 5,468 R+13.3
Howard 2,649 48.6% 2,794 51.3% 3 5,446 R+2.7
Wayne 2,482 46.4% 2,851 53.3% 12 5,345 R+6.9
Crawford 2,277 42.8% 3,023 56.8% 18 5,318 R+14.0
Jefferson 1,819 34.3% 3,471 65.4% 17 5,307 R+31.1
Decatur 2,485 47.3% 2,761 52.6% 5 5,251 R+5.3
Bremer 1,776 34.1% 3,403 65.3% 30 5,209 R+31.2
Guthrie 1,884 36.4% 3,271 63.3% 15 5,170 R+26.8
Buena Vista 2,085 41.2% 2,952 58.3% 26 5,063 R+17.1
Shelby 2,222 45.5% 2,646 54.2% 17 4,885 R+8.7
Madison 1,839 37.7% 3,010 61.8% 24 4,873 R+24.0
Monroe 2,363 49.0% 2,450 50.8% 14 4,827 R+1.8
Hancock 1,879 40.4% 2,767 59.4% 9 4,655 R+19.1
Palo Alto 2,204 47.3% 2,442 52.5% 9 4,655 R+5.1
Franklin 1,741 37.6% 2,873 62.0% 21 4,635 R+24.4
Montgomery 1,419 30.6% 3,209 69.2% 6 4,634 R+38.6
Cherokee 1,630 35.3% 2,965 64.2% 26 4,621 R+28.9
Mitchell 1,945 42.1% 2,662 57.7% 10 4,617 R+15.5
Fremont 1,998 43.4% 2,601 56.5% 8 4,607 R+13.1
Adair 1,649 36.2% 2,896 63.7% 4 4,549 R+27.4
Taylor 1,557 34.4% 2,964 65.5% 4 4,525 R+31.1
Calhoun 1,890 42.8% 2,503 56.7% 24 4,417 R+13.9
Butler 1,337 30.4% 3,051 69.3% 13 4,401 R+38.9
Davis 2,234 50.9% 2,145 48.9% 11 4,390 D+2.0
Lucas 1,789 40.9% 2,569 58.7% 19 4,377 R+17.8
O'Brien 1,412 32.8% 2,874 66.9% 13 4,299 R+34.0
Sac 1,544 36.0% 2,726 63.6% 16 4,286 R+27.6
Grundy 1,509 35.5% 2,727 64.2% 9 4,245 R+28.7
Greene 1,454 34.4% 2,743 64.9% 27 4,224 R+30.5
Pocahontas 2,012 47.9% 2,174 51.7% 16 4,202 R+3.9
Clay 1,745 41.8% 2,407 57.7% 23 4,175 R+15.9
Audubon 2,104 50.8% 2,036 49.1% 5 4,145 D+1.6
Ringgold 1,360 33.4% 2,699 66.3% 10 4,069 R+32.9
Winnebago 1,645 42.3% 2,227 57.3% 13 3,885 R+15.0
Van Buren 1,250 33.3% 2,493 66.4% 12 3,755 R+33.1
Adams 1,225 34.7% 2,302 65.2% 2 3,529 R+30.5
Emmet 1,456 41.5% 2,024 57.7% 25 3,505 R+16.2
Mills 1,069 30.6% 2,409 69.0% 13 3,491 R+38.4
Humboldt 1,385 39.7% 2,098 60.1% 7 3,490 R+20.4
Louisa 1,171 33.7% 2,301 66.2% 6 3,478 R+32.5
Clarke 1,226 36.0% 2,167 63.7% 10 3,403 R+27.7
Ida 1,060 33.9% 2,068 66.0% 3 3,131 R+32.2
Lyon 1,030 33.6% 2,027 66.2% 4 3,061 R+32.6
Dickinson 1,339 43.9% 1,699 55.7% 13 3,051 R+11.8
Worth 1,406 47.4% 1,550 52.3% 8 2,964 R+4.9
Osceola 1,030 39.0% 1,611 60.9% 3 2,644 R+22.0

Counties as they stood in 1942; some have since been split, merged or renamed. Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

Iowa Senate elections we hold

YearWinnerMargin
2022 Chuck Grassley (R) R+12.2
2020 Joni Ernst (R) R+6.6
2016 Chuck Grassley (R) R+24.4
2014 Joni Ernst (R) R+8.3
2010 Chuck Grassley (R) R+31.0
2008 Tom Harkin (D) D+25.4
2004 Charles E. Grassley (R) R+42.3
2002 Tom Harkin (D) D+10.4
1998 Charles E. Grassley (R) R+37.9
1996 Tom Harkin (D) D+5.1
1992 Chuck Grassley (R) R+42.4
1990 Tom Harkin (D) D+9.1
1986 Charles E. Grassley (R) R+32.5
1984 Tom Harkin (D) D+11.8
1980 Charles E. Grassley (R) R+7.9
1978 Roger W. Jepsen (R) R+3.2
1974 John C. Culver (D) D+4.8
1972 Dick Clark (D) D+11.0
1968 Harold E. Hughes (D) D+0.6
1966 Jack Miller (R) R+23.1
1962 Bourke Hickenlooper (R) R+6.8
1960 Jack Miller (R) R+3.8
1956 Bourke Hickenlooper (R) R+7.8
1954 Thomas E. Martin (R) R+4.7
1950 Bourke Hickenlooper (R) R+10.1
1948 Guy M. Gillette (D) D+16.2
1944 Bourke Hickenlooper (R) R+2.9
1942 George A. Wilson (R) R+16.3
1938 Guy M. Gillette (D) D+0.3
1936 Clyde L. Herring (D) D+3.4
1932 Richard L. Murphy (D) D+13.9
1930 Lester Dickinson (R) R+13.3
1926 Smith W. Brookhart (R) R+13.2
1924 Smith W. Brookhart (R) R+0.1
1920 Albert B. Cummins (R) R+24.0
1918 William S. Kenyon (R) R+30.8
1914 Albert B. Cummins (R) R+9.0