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United States · Election results history · 1968 Senate · Iowa
Election 1968 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.

1968 US Senate election in Iowa

Harold E. Hughes (Democrat) beat David M. Stanley (Republican) in Iowa in 1968, 50.2% to 49.7%, a margin of 0.6 points and 6,415 votes.

Iowa changed party: in 1962 it went Republican, for Bourke Hickenlooper.

Republicans led in 69 of the 99 counties as they stood then and Democrats in 30. The largest, Polk, cast 112,105 votes and went to the Democrat by 19.4 points. The closest was Appanoose, where 14 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
Harold E. Hughes won Democratic 574,884 50.2%
David M. Stanley Republican 568,469 49.7%
All other candidates 733 0.1%
Total1,144,086

Every county

CountyDemocratRepublicanOthersTotalMargin
Polk 66,859 59.6% 45,135 40.3% 111 112,105 D+19.4
Linn 36,327 57.5% 26,822 42.4% 36 63,185 D+15.0
Scott 27,239 50.8% 26,352 49.1% 27 53,618 D+1.7
Black Hawk 23,949 49.2% 24,698 50.7% 34 48,681 R+1.5
Woodbury 23,647 57.7% 17,294 42.2% 30 40,971 D+15.5
Dubuque 21,040 62.0% 12,885 37.9% 28 33,953 D+24.0
Pottawattamie 11,155 40.7% 16,222 59.2% 25 27,402 R+18.5
Johnson 16,402 63.6% 9,373 36.3% 12 25,787 D+27.3
Story 13,095 55.8% 10,368 44.2% 17 23,480 D+11.6
Clinton 10,300 47.1% 11,555 52.9% 4 21,859 R+5.7
Cerro Gordo 10,182 50.9% 9,802 49.0% 18 20,002 D+1.9
Des Moines 11,244 56.9% 8,489 43.0% 15 19,748 D+14.0
Webster 10,000 53.3% 8,739 46.6% 21 18,760 D+6.7
Wapello 9,959 54.9% 8,155 45.0% 23 18,137 D+9.9
Lee 8,720 49.8% 8,786 50.2% 4 17,510 R+0.4
Marshall 8,422 51.4% 7,929 48.4% 20 16,371 D+3.0
Jasper 7,994 53.3% 7,002 46.7% 10 15,006 D+6.6
Muscatine 4,467 35.3% 8,165 64.6% 7 12,639 R+29.3
Sioux 3,338 27.1% 8,997 72.9% 1 12,336 R+45.9
Fayette 5,097 44.5% 6,360 55.5% 1 11,458 R+11.0
Dallas 6,228 56.0% 4,896 44.0% 7 11,131 D+12.0
Warren 5,910 53.7% 5,085 46.2% 13 11,008 D+7.5
Boone 6,144 56.3% 4,742 43.5% 18 10,904 D+12.9
Marion 5,550 51.1% 5,308 48.8% 9 10,867 D+2.2
Plymouth 4,340 43.8% 5,577 56.2% 3 9,920 R+12.5
Kossuth 5,167 52.4% 4,697 47.6% 2 9,866 D+4.8
Mahaska 4,562 47.2% 5,091 52.7% 8 9,661 R+5.5
Benton 4,664 49.5% 4,741 50.3% 14 9,419 R+0.8
Winneshiek 4,254 46.3% 4,936 53.7% 3 9,193 R+7.4
Carroll 5,669 62.6% 3,385 37.4% 7 9,061 D+25.2
Tama 4,544 50.4% 4,472 49.6% 2 9,018 D+0.8
Buena Vista 4,248 47.5% 4,692 52.4% 6 8,946 R+5.0
Clayton 4,036 46.6% 4,626 53.4% 7 8,669 R+6.8
Hardin 4,132 47.8% 4,505 52.1% 4 8,641 R+4.3
Buchanan 3,964 46.5% 4,565 53.5% 1 8,530 R+7.0
Page 2,709 32.0% 5,757 68.0% 3 8,469 R+36.0
Jones 4,120 49.4% 4,224 50.6% 3 8,347 R+1.2
Bremer 3,160 37.9% 5,177 62.0% 7 8,344 R+24.2
Jackson 4,394 54.1% 3,720 45.8% 14 8,128 D+8.3
Floyd 3,616 44.9% 4,443 55.1% 3 8,062 R+10.3
Poweshiek 4,115 51.2% 3,919 48.7% 7 8,041 D+2.4
O'Brien 2,975 37.6% 4,936 62.4% 1 7,912 R+24.8
Hamilton 3,785 47.9% 4,103 52.0% 6 7,894 R+4.0
Washington 3,231 41.8% 4,503 58.2% 4 7,738 R+16.4
Delaware 3,426 44.6% 4,248 55.3% 1 7,675 R+10.7
Cass 2,768 36.4% 4,836 63.5% 9 7,613 R+27.2
Crawford 3,825 50.3% 3,767 49.5% 11 7,603 D+0.8
Cedar 3,093 40.9% 4,476 59.1% 7,569 R+18.3
Henry 3,119 41.4% 4,405 58.5% 2 7,526 R+17.1
Cherokee 3,447 46.5% 3,960 53.5% 1 7,408 R+6.9
Wright 3,503 47.4% 3,878 52.5% 9 7,390 R+5.1
Clay 3,577 48.4% 3,808 51.6% 1 7,386 R+3.1
Appanoose 3,507 49.9% 3,521 50.1% 1 7,029 R+0.2
Iowa 3,088 44.0% 3,924 55.9% 3 7,015 R+11.9
Allamakee 2,820 40.5% 4,144 59.5% 1 6,965 R+19.0
Grundy 2,450 36.4% 4,276 63.6% 6,726 R+27.1
Jefferson 2,752 41.0% 3,964 59.0% 3 6,719 R+18.0
Chickasaw 3,336 49.8% 3,360 50.2% 6,696 R+0.4
Keokuk 3,128 47.1% 3,512 52.9% 2 6,642 R+5.8
Sac 3,123 47.4% 3,467 52.6% 2 6,592 R+5.2
Harrison 2,801 42.5% 3,788 57.5% 1 6,590 R+15.0
Shelby 2,889 44.2% 3,640 55.7% 4 6,533 R+11.5
Butler 2,119 32.7% 4,361 67.2% 10 6,490 R+34.5
Calhoun 2,942 46.4% 3,394 53.5% 6 6,342 R+7.1
Montgomery 2,372 37.5% 3,958 62.5% 3 6,333 R+25.0
Palo Alto 3,262 53.7% 2,816 46.3% 6,078 D+7.3
Dickinson 2,817 47.6% 3,098 52.4% 1 5,916 R+4.7
Winnebago 2,562 43.8% 3,281 56.2% 5,843 R+12.3
Hancock 2,603 45.0% 3,179 54.9% 8 5,790 R+9.9
Mitchell 2,487 43.2% 3,271 56.8% 1 5,759 R+13.6
Union 2,662 46.2% 3,094 53.7% 3 5,759 R+7.5
Emmet 2,542 44.5% 3,167 55.4% 4 5,713 R+10.9
Howard 2,635 46.4% 3,046 53.6% 1 5,682 R+7.2
Lyon 1,797 31.9% 3,828 68.0% 3 5,628 R+36.1
Guthrie 2,562 45.6% 3,049 54.3% 5 5,616 R+8.7
Madison 2,579 46.1% 3,004 53.7% 8 5,591 R+7.6
Franklin 2,340 42.2% 3,204 57.8% 1 5,545 R+15.6
Monona 2,791 50.8% 2,698 49.1% 1 5,490 D+1.7
Pocahontas 2,833 51.7% 2,643 48.2% 6 5,482 D+3.5
Humboldt 2,500 45.9% 2,945 54.0% 4 5,449 R+8.2
Greene 2,567 47.1% 2,875 52.8% 4 5,446 R+5.7
Lucas 2,360 51.2% 2,246 48.8% 1 4,607 D+2.5
Monroe 2,456 53.5% 2,130 46.4% 2 4,588 D+7.1
Decatur 2,283 50.6% 2,225 49.4% 4,508 D+1.3
Wayne 1,996 44.3% 2,506 55.7% 1 4,503 R+11.3
Adair 1,917 42.6% 2,582 57.4% 1 4,500 R+14.8
Taylor 1,823 40.6% 2,665 59.4% 4,488 R+18.8
Mills 1,530 34.5% 2,906 65.5% 3 4,439 R+31.0
Louisa 1,788 40.5% 2,631 59.5% 4,419 R+19.1
Audubon 2,002 45.3% 2,414 54.7% 4,416 R+9.3
Ida 2,389 54.1% 2,023 45.9% 4,412 D+8.3
Worth 2,086 48.7% 2,199 51.3% 4,285 R+2.6
Davis 2,085 49.5% 2,125 50.5% 1 4,211 R+0.9
Fremont 1,772 43.1% 2,333 56.8% 4 4,109 R+13.7
Osceola 1,722 43.1% 2,275 56.9% 3,997 R+13.8
Clarke 1,854 47.1% 2,086 52.9% 3,940 R+5.9
Van Buren 1,541 40.5% 2,260 59.4% 2 3,803 R+18.9
Ringgold 1,471 43.2% 1,935 56.8% 1 3,407 R+13.6
Adams 1,232 40.4% 1,815 59.5% 1 3,048 R+19.1

Counties as they stood in 1968; 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