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United States · Election results history · 1924 Senate · Iowa
Election 1924 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.

1924 US Senate election in Iowa

Smith W. Brookhart (Republican) beat Daniel F. Steck (Democrat) in Iowa in 1924, 50.04% to 49.96%, a margin of 0.08 points and 754 votes.

The Republican hold continued from 1918, when William S. Kenyon won.

Republicans led in 60 of the 99 counties as they stood then and Democrats in 39. The largest, Polk, cast 53,200 votes and went to the Republican by 3.4 points. The closest was Mahaska, where 15 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
Smith W. Brookhart won Republican 447,594 50.0%
Daniel F. Steck Democratic 446,840 50.0%
Total894,434

Every county

CountyDemocratRepublicanOthersTotalMargin
Polk 25,684 48.3% 27,516 51.7% 53,200 R+3.4
Linn 21,723 64.5% 11,965 35.5% 33,688 D+29.0
Woodbury 13,972 43.9% 17,819 56.1% 31,791 R+12.1
Scott 14,910 55.3% 12,054 44.7% 26,964 D+10.6
Pottawattamie 13,456 58.2% 9,658 41.8% 23,114 D+16.4
Black Hawk 13,473 60.9% 8,634 39.1% 22,107 D+21.9
Dubuque 11,715 57.5% 8,658 42.5% 20,373 D+15.0
Clinton 9,121 49.4% 9,342 50.6% 18,463 R+1.2
Lee 10,411 61.3% 6,570 38.7% 16,981 D+22.6
Wapello 9,800 58.2% 7,048 41.8% 16,848 D+16.3
Des Moines 7,699 56.7% 5,889 43.3% 13,588 D+13.3
Cerro Gordo 6,091 45.6% 7,265 54.4% 13,356 R+8.8
Webster 5,504 44.1% 6,989 55.9% 12,493 R+11.9
Johnson 7,443 60.9% 4,779 39.1% 12,222 D+21.8
Marshall 7,289 62.2% 4,426 37.8% 11,715 D+24.4
Muscatine 6,034 53.7% 5,208 46.3% 11,242 D+7.3
Fayette 5,037 45.1% 6,136 54.9% 11,173 R+9.8
Jasper 5,299 47.7% 5,802 52.3% 11,101 R+4.5
Appanoose 5,018 48.3% 5,380 51.7% 10,398 R+3.5
Marion 4,370 43.6% 5,646 56.4% 10,016 R+12.7
Mahaska 4,901 49.9% 4,916 50.1% 9,817 R+0.2
Boone 3,306 34.5% 6,288 65.5% 9,594 R+31.1
Harrison 6,265 67.1% 3,073 32.9% 9,338 D+34.2
Dallas 3,593 39.0% 5,626 61.0% 9,219 R+22.1
Story 4,641 50.4% 4,560 49.6% 9,201 D+0.9
Clayton 3,660 40.5% 5,381 59.5% 9,041 R+19.0
Keokuk 4,908 54.7% 4,063 45.3% 8,971 D+9.4
Tama 5,231 58.6% 3,698 41.4% 8,929 D+17.2
Winneshiek 3,672 43.5% 4,773 56.5% 8,445 R+13.0
Page 4,879 57.8% 3,563 42.2% 8,442 D+15.6
Benton 4,967 60.1% 3,301 39.9% 8,268 D+20.1
Buchanan 5,010 60.8% 3,230 39.2% 8,240 D+21.6
Plymouth 3,502 42.8% 4,688 57.2% 8,190 R+14.5
Kossuth 3,031 37.5% 5,053 62.5% 8,084 R+25.0
Washington 4,337 53.9% 3,716 46.1% 8,053 D+7.7
Cass 4,827 60.3% 3,175 39.7% 8,002 D+20.6
Poweshiek 3,647 45.8% 4,315 54.2% 7,962 R+8.4
Carroll 3,841 48.7% 4,054 51.3% 7,895 R+2.7
Sioux 2,690 35.3% 4,932 64.7% 7,622 R+29.4
Jones 5,157 68.0% 2,431 32.0% 7,588 D+35.9
Monroe 3,560 47.5% 3,941 52.5% 7,501 R+5.1
Delaware 4,607 62.9% 2,719 37.1% 7,326 D+25.8
Cedar 4,395 60.6% 2,856 39.4% 7,251 D+21.2
Jackson 3,843 53.7% 3,316 46.3% 7,159 D+7.4
Floyd 3,437 48.0% 3,719 52.0% 7,156 R+3.9
Union 2,949 41.3% 4,190 58.7% 7,139 R+17.4
Hardin 3,335 47.5% 3,686 52.5% 7,021 R+5.0
Warren 3,259 46.4% 3,761 53.6% 7,020 R+7.2
Henry 3,719 53.1% 3,282 46.9% 7,001 D+6.2
Crawford 3,076 44.1% 3,906 55.9% 6,982 R+11.9
Chickasaw 3,851 55.6% 3,074 44.4% 6,925 D+11.2
Wright 2,522 36.5% 4,383 63.5% 6,905 R+27.0
Guthrie 2,898 42.7% 3,884 57.3% 6,782 R+14.5
Hamilton 2,099 31.0% 4,680 69.0% 6,779 R+38.1
Montgomery 3,793 56.3% 2,947 43.7% 6,740 D+12.6
Taylor 3,156 47.5% 3,486 52.5% 6,642 R+5.0
Buena Vista 2,062 31.5% 4,482 68.5% 6,544 R+37.0
Greene 3,534 54.2% 2,987 45.8% 6,521 D+8.4
Allamakee 2,674 41.3% 3,802 58.7% 6,476 R+17.4
Shelby 3,617 56.7% 2,765 43.3% 6,382 D+13.4
Wayne 2,965 46.5% 3,415 53.5% 6,380 R+7.1
Jefferson 3,531 56.2% 2,752 43.8% 6,283 D+12.4
Madison 2,997 47.7% 3,281 52.3% 6,278 R+4.5
Iowa 3,056 48.8% 3,212 51.2% 6,268 R+2.5
O'Brien 2,730 43.9% 3,495 56.1% 6,225 R+12.3
Bremer 3,144 50.7% 3,063 49.3% 6,207 D+1.3
Decatur 2,634 42.7% 3,529 57.3% 6,163 R+14.5
Fremont 4,114 68.7% 1,873 31.3% 5,987 D+37.4
Monona 2,728 46.2% 3,183 53.8% 5,911 R+7.7
Calhoun 2,334 40.2% 3,469 59.8% 5,803 R+19.6
Sac 2,406 41.5% 3,392 58.5% 5,798 R+17.0
Cherokee 2,477 42.9% 3,294 57.1% 5,771 R+14.2
Butler 2,833 49.1% 2,934 50.9% 5,767 R+1.8
Van Buren 3,107 54.2% 2,629 45.8% 5,736 D+8.3
Lucas 1,964 34.5% 3,726 65.5% 5,690 R+31.0
Mitchell 1,856 33.0% 3,769 67.0% 5,625 R+34.0
Adair 2,894 51.6% 2,713 48.4% 5,607 D+3.2
Mills 3,596 65.1% 1,932 34.9% 5,528 D+30.1
Davis 3,112 56.7% 2,377 43.3% 5,489 D+13.4
Howard 2,996 54.7% 2,484 45.3% 5,480 D+9.3
Pocahontas 1,769 32.5% 3,679 67.5% 5,448 R+35.1
Palo Alto 1,619 29.8% 3,817 70.2% 5,436 R+40.4
Clay 2,383 45.5% 2,854 54.5% 5,237 R+9.0
Hancock 1,956 39.2% 3,030 60.8% 4,986 R+21.5
Grundy 2,240 45.2% 2,721 54.8% 4,961 R+9.7
Ringgold 1,861 38.2% 3,016 61.8% 4,877 R+23.7
Winnebago 1,067 22.4% 3,694 77.6% 4,761 R+55.2
Emmet 1,642 34.9% 3,069 65.1% 4,711 R+30.3
Franklin 1,860 40.3% 2,758 59.7% 4,618 R+19.4
Clarke 1,550 34.9% 2,890 65.1% 4,440 R+30.2
Louisa 2,268 52.4% 2,059 47.6% 4,327 D+4.8
Adams 1,920 44.4% 2,404 55.6% 4,324 R+11.2
Audubon 1,986 46.2% 2,314 53.8% 4,300 R+7.6
Ida 1,565 36.5% 2,727 63.5% 4,292 R+27.1
Lyon 1,391 32.8% 2,854 67.2% 4,245 R+34.5
Worth 1,060 25.2% 3,140 74.8% 4,200 R+49.5
Humboldt 1,404 34.2% 2,696 65.8% 4,100 R+31.5
Dickinson 1,951 50.7% 1,899 49.3% 3,850 D+1.4
Osceola 1,374 41.2% 1,965 58.8% 3,339 R+17.7

Counties as they stood in 1924; 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