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United States · Election results history · 1966 governors · Iowa
Election 1966 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.

1966 Iowa governor election

Harold E. Hughes (Democrat) beat William G. Murray (Republican) in Iowa in 1966, 55.3% to 44.2%, a margin of 11.2 points and 99,741 votes.

The Democratic hold continued from 1964, when Harold E. Hughes also won.

Democrats led in 61 of the 99 counties as they stood then and Republicans in 38. The largest, Polk, cast 85,566 votes and went to the Democrat by 29.6 points. The closest was Clay, where 10 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.

Governor

CandidatePartyVotesShare
Harold E. Hughes won Democratic 494,259 55.3%
William G. Murray Republican 394,518 44.2%
All other candidates 4,398 0.5%
Total893,175

Every county

CountyDemocratRepublicanOthersTotalMargin
Polk 55,022 64.3% 29,696 34.7% 848 85,566 D+29.6
Linn 31,984 67.3% 15,396 32.4% 113 47,493 D+34.9
Black Hawk 22,043 56.9% 16,640 43.0% 58 38,741 D+13.9
Scott 21,647 58.6% 14,956 40.5% 347 36,950 D+18.1
Woodbury 20,569 61.5% 12,726 38.1% 126 33,421 D+23.5
Dubuque 17,587 71.3% 7,002 28.4% 64 24,653 D+42.9
Pottawattamie 7,218 36.1% 12,750 63.8% 23 19,991 R+27.7
Clinton 8,807 53.6% 7,585 46.1% 48 16,440 D+7.4
Story 9,349 57.0% 6,930 42.2% 134 16,413 D+14.7
Johnson 11,024 67.4% 5,266 32.2% 55 16,345 D+35.2
Cerro Gordo 8,075 52.6% 7,100 46.2% 187 15,362 D+6.3
Des Moines 9,439 62.0% 5,705 37.5% 87 15,231 D+24.5
Wapello 8,973 59.6% 5,994 39.8% 98 15,065 D+19.8
Webster 9,244 62.3% 5,545 37.4% 47 14,836 D+24.9
Lee 7,520 54.3% 6,294 45.5% 23 13,837 D+8.9
Marshall 6,730 54.4% 5,580 45.1% 65 12,375 D+9.3
Jasper 7,207 58.3% 5,073 41.1% 73 12,353 D+17.3
Sioux 3,384 33.1% 6,815 66.7% 17 10,216 R+33.6
Fayette 4,694 49.0% 4,871 50.9% 7 9,572 R+1.8
Muscatine 4,542 47.6% 4,980 52.2% 23 9,545 R+4.6
Marion 5,416 57.9% 3,900 41.7% 34 9,350 D+16.2
Boone 5,554 63.4% 3,124 35.7% 78 8,756 D+27.8
Carroll 5,763 67.1% 2,809 32.7% 13 8,585 D+34.4
Kossuth 4,329 52.4% 3,904 47.3% 24 8,257 D+5.1
Dallas 4,775 57.9% 3,424 41.5% 44 8,243 D+16.4
Mahaska 4,344 54.2% 3,617 45.1% 60 8,021 D+9.1
Plymouth 3,851 48.4% 4,089 51.4% 22 7,962 R+3.0
Warren 4,579 57.7% 3,248 40.9% 113 7,940 D+16.8
Winneshiek 4,247 55.1% 3,455 44.8% 6 7,708 D+10.3
Benton 4,262 59.5% 2,882 40.2% 22 7,166 D+19.3
Tama 3,829 54.7% 3,147 45.0% 19 6,995 D+9.7
Clayton 3,786 54.4% 3,166 45.5% 9 6,961 D+8.9
O'Brien 2,976 42.8% 3,950 56.9% 20 6,946 R+14.0
Page 2,521 36.4% 4,395 63.4% 13 6,929 R+27.0
Hardin 3,472 50.3% 3,365 48.7% 69 6,906 D+1.5
Buena Vista 3,562 51.8% 3,260 47.4% 51 6,873 D+4.4
Buchanan 3,469 51.5% 3,264 48.4% 7 6,740 D+3.0
Floyd 3,137 47.1% 3,492 52.4% 36 6,665 R+5.3
Jones 3,796 58.0% 2,743 41.9% 5 6,544 D+16.1
Poweshiek 3,489 53.6% 2,986 45.9% 29 6,504 D+7.7
Bremer 3,166 49.2% 3,258 50.6% 17 6,441 R+1.4
Appanoose 3,323 52.6% 2,985 47.2% 15 6,323 D+5.3
Jackson 3,542 56.8% 2,678 42.9% 17 6,237 D+13.9
Washington 3,069 50.1% 3,017 49.2% 43 6,129 D+0.8
Delaware 3,187 52.3% 2,903 47.6% 3 6,093 D+4.7
Crawford 3,417 56.4% 2,615 43.2% 22 6,054 D+13.2
Chickasaw 3,350 55.9% 2,639 44.0% 2 5,991 D+11.9
Hamilton 3,082 51.7% 2,834 47.5% 45 5,961 D+4.2
Cherokee 2,738 46.0% 3,184 53.5% 31 5,953 R+7.5
Harrison 2,591 44.4% 3,245 55.6% 1 5,837 R+11.2
Wright 3,036 52.5% 2,652 45.8% 98 5,786 D+6.6
Clay 2,844 49.6% 2,854 49.8% 33 5,731 R+0.2
Cass 2,199 38.4% 3,515 61.4% 12 5,726 R+23.0
Cedar 3,142 55.1% 2,552 44.7% 13 5,707 D+10.3
Henry 2,447 43.7% 3,122 55.7% 36 5,605 R+12.0
Iowa 2,979 53.5% 2,553 45.9% 34 5,566 D+7.7
Keokuk 2,989 54.3% 2,473 45.0% 38 5,500 D+9.4
Allamakee 2,686 49.7% 2,712 50.2% 3 5,401 R+0.5
Grundy 2,239 42.1% 3,068 57.7% 8 5,315 R+15.6
Sac 2,712 51.8% 2,508 47.9% 13 5,233 D+3.9
Palo Alto 3,007 57.5% 2,205 42.2% 14 5,226 D+15.3
Butler 2,070 40.3% 3,047 59.3% 21 5,138 R+19.0
Shelby 2,400 47.2% 2,679 52.7% 7 5,086 R+5.5
Union 2,681 53.3% 2,326 46.2% 25 5,032 D+7.1
Jefferson 2,129 42.5% 2,770 55.3% 106 5,005 R+12.8
Madison 2,651 53.6% 2,266 45.8% 33 4,950 D+7.8
Howard 2,651 53.8% 2,275 46.2% 4,926 D+7.6
Montgomery 2,073 42.5% 2,803 57.5% 3 4,879 R+15.0
Calhoun 2,456 50.4% 2,385 48.9% 32 4,873 D+1.5
Winnebago 2,220 47.0% 2,482 52.6% 17 4,719 R+5.6
Guthrie 2,366 50.7% 2,282 48.9% 16 4,664 D+1.8
Greene 2,464 54.2% 2,075 45.6% 10 4,549 D+8.6
Monona 2,480 55.0% 2,023 44.9% 7 4,510 D+10.1
Franklin 2,026 44.9% 2,399 53.2% 84 4,509 R+8.3
Pocahontas 2,424 54.6% 1,983 44.7% 31 4,438 D+9.9
Mitchell 2,026 45.8% 2,391 54.0% 7 4,424 R+8.3
Hancock 2,008 45.7% 2,272 51.7% 115 4,395 R+6.0
Lyon 1,658 38.6% 2,628 61.2% 8 4,294 R+22.6
Humboldt 2,037 48.0% 2,191 51.6% 18 4,246 R+3.6
Dickinson 1,928 45.5% 2,301 54.3% 9 4,238 R+8.8
Emmet 2,042 48.3% 2,181 51.6% 7 4,230 R+3.3
Lucas 2,149 53.4% 1,842 45.8% 33 4,024 D+7.6
Monroe 2,172 54.6% 1,801 45.2% 8 3,981 D+9.3
Decatur 2,272 58.0% 1,624 41.5% 18 3,914 D+16.6
Audubon 1,834 47.6% 2,008 52.2% 7 3,849 R+4.5
Wayne 1,786 47.2% 1,982 52.4% 15 3,783 R+5.2
Taylor 1,720 45.6% 2,048 54.2% 8 3,776 R+8.7
Ida 2,237 59.9% 1,493 40.0% 5 3,735 D+19.9
Fremont 1,643 44.5% 2,052 55.5% 3,695 R+11.1
Mills 1,326 36.9% 2,272 63.1% 3,598 R+26.3
Adair 1,639 45.8% 1,931 53.9% 10 3,580 R+8.2
Clarke 1,903 53.6% 1,610 45.4% 36 3,549 D+8.3
Worth 1,781 50.9% 1,706 48.8% 12 3,499 D+2.1
Louisa 1,630 46.6% 1,854 53.0% 13 3,497 R+6.4
Davis 1,888 55.4% 1,500 44.0% 23 3,411 D+11.4
Osceola 1,697 50.2% 1,674 49.5% 9 3,380 D+0.7
Van Buren 1,386 44.1% 1,743 55.5% 12 3,141 R+11.4
Ringgold 1,328 44.9% 1,610 54.5% 17 2,955 R+9.5
Adams 1,118 46.0% 1,313 54.0% 1 2,432 R+8.0

Counties as they stood in 1966; 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 governor elections we hold

YearWinnerMargin
2022 Kim Reynolds (R) R+18.5
2018 Kim Reynolds (R) R+2.7
2014 Terry E. Branstad (R) R+21.7
2010 Terry E. Branstad (R) R+9.6
2006 Chet Culver (D) D+9.6
2002 Tom Vilsack (D) D+8.2
1998 Tom Vilsack (D) D+5.8
1994 Terry E. Branstad (R) R+15.2
1990 Terry E. Branstad (R) R+21.8
1986 Terry E. Branstad (R) R+3.9
1982 Terry E. Branstad (R) R+6.3
1978 Robert E. Ray (R) R+17.3
1974 Robert E. Ray (R) R+17.1
1972 Robert E. Ray (R) R+18.2
1970 Robert E. Ray (R) R+4.4
1968 Robert E. Ray (R) R+8.2
1966 Harold E. Hughes (D) D+11.2
1964 Harold E. Hughes (D) D+36.8
1962 Harold E. Hughes (D) D+5.1
1960 Norman A. Erbe (R) R+4.3
1958 Herschel C. Loveless (D) D+8.3
1956 Herschel C. Loveless (D) D+2.4
1954 Leo A. Hoegh (R) R+3.0
1952 William Beardsley (R) R+4.1
1950 William Beardsley (R) R+18.6
1948 William Beardsley (R) R+12.0
1946 Robert D. Blue (R) R+15.3
1944 Robert D. Blue (R) R+12.4
1942 Bourke B. Hickenlooper (R) R+25.8
1940 George Wilson (R) R+5.7
1938 George Wilson (R) R+7.0
1936 Nelson G. Kraschel (D) D+0.2
1934 Clyde L. Herring (D) D+8.2
1932 Clyde LaVerne Herring (D) D+5.5
1930 Dan W. Turner (R) R+32.1
1928 John Hammill (R) R+25.6
1926 John Hammill (R) R+42.9
1924 John Hammill (R) R+45.4
1922 Nathan E. Kendall (R) R+41.1
1920 Nathan E. Kendall (R) R+20.0
1918 William L. Harding (R) R+3.6
1916 William L. Harding (R) R+24.6
1914 George W. Clarke (R) R+6.4
1912 George W. Clarke (R) R+0.4
1910 Beryl F. Carroll (R) R+4.4
1908 Beryl F. Carroll (R) R+12.8
1906 Albert B. Cummins (R) R+4.8
1903 Albert B. Cummins (R) R+18.9
1901 Albert B. Cummins (R) R+21.3
1899 Leslie M. Shaw (R) R+13.0
1897 Leslie M. Shaw (R) R+6.8
1895 Francis M. Drake (R) R+14.8
1893 Frank D. Jackson (R) R+7.7
1891 Horace Boies (D) D+2.0
1889 Horace Boies (D) D+1.8
1887 William Larrabee (R) R+4.7
1885 William Larrabee (R) R+2.0
1883 Buren R. Sherman (R) R+7.4
1881 Buren R. Sherman (R) R+25.5
1879 John Henry Gear (R) R+24.7
1877 John Henry Gear (R) R+17.1
1875 Samuel Jordan Kirkwood (R) R+14.4
1873 Cyrus Clay Carpenter (R) R+56.0
1871 Cyrus Clay Carpenter (R) R+23.2
1869 Samuel Merrill (R) R+25.9
1867 Samuel Merrill (R) R+17.8
1865 William M. Stone (R) R+13.1