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United States · Election results history · 2002 Senate · Iowa
Election 2002 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.

2002 US Senate election in Iowa

Tom Harkin (Democrat) beat Greg Ganske (Republican) in Iowa in 2002, 54.2% to 43.8%, a margin of 10.4 points and 106,386 votes.

The Democratic hold continued from 1996, when Tom Harkin also won.

Democrats led in 79 of the 99 counties and Republicans in 20. The largest, Polk, cast 142,173 votes and went to the Democrat by 13.8 points. The closest was Crawford, 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.

Senate

CandidatePartyVotesShare
Tom Harkin won Democratic 554,278 54.2%
Greg Ganske Republican 447,892 43.8%
All other candidates 20,905 2.0%
Total1,023,075

Every county

CountyDemocratRepublicanOthersTotalMargin
Polk 79,774 56.1% 60,119 42.3% 2,280 142,173 D+13.8
Linn 41,380 56.4% 30,436 41.5% 1,506 73,322 D+14.9
Scott 28,907 55.3% 22,346 42.7% 1,031 52,284 D+12.5
Black Hawk 24,302 58.4% 16,475 39.6% 815 41,592 D+18.8
Johnson 24,965 64.6% 12,315 31.9% 1,339 38,619 D+32.8
Dubuque 19,383 60.1% 12,237 38.0% 624 32,244 D+22.2
Story 16,395 57.3% 11,532 40.3% 684 28,611 D+17.0
Woodbury 14,643 52.0% 12,722 45.2% 771 28,136 D+6.8
Pottawattamie 11,798 45.7% 13,557 52.5% 452 25,807 R+6.8
Dallas 8,165 49.7% 7,978 48.6% 274 16,417 D+1.1
Warren 9,145 56.4% 6,819 42.0% 263 16,227 D+14.3
Cerro Gordo 9,406 58.0% 6,295 38.8% 519 16,220 D+19.2
Clinton 9,581 59.2% 6,309 39.0% 297 16,187 D+20.2
Des Moines 9,080 60.1% 5,662 37.5% 357 15,099 D+22.6
Jasper 8,500 58.0% 5,947 40.6% 216 14,663 D+17.4
Marshall 7,908 55.7% 6,047 42.6% 231 14,186 D+13.1
Lee 8,093 61.2% 4,670 35.3% 458 13,221 D+25.9
Wapello 8,200 62.1% 4,707 35.6% 303 13,210 D+26.4
Webster 7,433 56.3% 5,539 42.0% 223 13,195 D+14.4
Marion 5,437 47.7% 5,819 51.1% 135 11,391 R+3.4
Muscatine 5,972 53.2% 4,988 44.5% 257 11,217 D+8.8
Sioux 2,103 18.8% 9,045 80.7% 60 11,208 R+61.9
Boone 5,902 59.3% 3,852 38.7% 191 9,945 D+20.6
Benton 4,901 53.8% 4,031 44.2% 184 9,116 D+9.5
Bremer 4,307 51.1% 3,969 47.1% 150 8,426 D+4.0
Fayette 4,238 55.2% 3,339 43.5% 107 7,684 D+11.7
Kossuth 4,206 55.3% 3,232 42.5% 172 7,610 D+12.8
Plymouth 3,307 44.2% 3,990 53.4% 178 7,475 R+9.1
Carroll 3,992 53.6% 3,317 44.6% 135 7,444 D+9.1
Winneshiek 3,893 52.7% 3,283 44.5% 205 7,381 D+8.3
Buchanan 4,285 59.0% 2,838 39.1% 141 7,264 D+19.9
Jones 3,983 55.0% 3,085 42.6% 174 7,242 D+12.4
Mahaska 3,124 43.3% 4,005 55.5% 85 7,214 R+12.2
Washington 3,518 49.6% 3,441 48.5% 138 7,097 D+1.1
Hardin 3,613 51.9% 3,217 46.2% 130 6,960 D+5.7
Clayton 3,861 56.0% 2,864 41.5% 170 6,895 D+14.5
Henry 3,500 51.6% 3,146 46.3% 143 6,789 D+5.2
Poweshiek 3,609 54.3% 2,895 43.6% 142 6,646 D+10.7
Dickinson 3,397 51.1% 3,133 47.1% 115 6,645 D+4.0
Cedar 3,423 53.0% 2,892 44.8% 143 6,458 D+8.2
Jackson 3,753 58.6% 2,531 39.5% 117 6,401 D+19.1
Delaware 3,096 49.0% 3,148 49.8% 76 6,320 R+0.8
Tama 3,470 55.3% 2,686 42.8% 118 6,274 D+12.5
Hamilton 3,283 53.3% 2,750 44.6% 129 6,162 D+8.6
Jefferson 3,119 52.8% 2,414 40.9% 373 5,906 D+11.9
Buena Vista 3,023 51.2% 2,779 47.1% 98 5,900 D+4.1
Madison 2,960 50.7% 2,790 47.8% 92 5,842 D+2.9
Iowa 2,960 51.1% 2,701 46.6% 136 5,797 D+4.5
Clay 2,822 49.5% 2,772 48.6% 112 5,706 D+0.9
Floyd 3,187 58.1% 2,135 38.9% 165 5,487 D+19.2
Cass 2,306 42.6% 3,044 56.2% 64 5,414 R+13.6
O'Brien 1,936 36.7% 3,258 61.8% 76 5,270 R+25.1
Chickasaw 3,028 59.4% 1,920 37.7% 148 5,096 D+21.7
Page 1,779 35.9% 3,114 62.8% 62 4,955 R+26.9
Harrison 2,128 43.1% 2,711 54.9% 95 4,934 R+11.8
Allamakee 2,463 50.0% 2,334 47.4% 125 4,922 D+2.6
Butler 2,290 46.7% 2,510 51.2% 106 4,906 R+4.5
Cherokee 2,509 51.9% 2,199 45.5% 122 4,830 D+6.4
Shelby 1,939 40.2% 2,810 58.3% 73 4,822 R+18.1
Appanoose 2,618 54.3% 2,127 44.1% 76 4,821 D+10.2
Grundy 1,972 41.6% 2,705 57.1% 60 4,737 R+15.5
Crawford 2,275 49.4% 2,285 49.6% 46 4,606 R+0.2
Wright 2,267 49.9% 2,227 49.0% 51 4,545 D+0.9
Union 2,467 55.8% 1,865 42.1% 93 4,425 D+13.6
Guthrie 2,350 54.4% 1,901 44.0% 66 4,317 D+10.4
Lyon 1,271 29.9% 2,933 69.1% 41 4,245 R+39.2
Mills 1,547 36.6% 2,609 61.7% 74 4,230 R+25.1
Winnebago 2,224 53.2% 1,862 44.5% 98 4,184 D+8.7
Hancock 2,036 48.8% 2,018 48.4% 117 4,171 D+0.4
Franklin 2,082 50.9% 1,906 46.6% 106 4,094 D+4.3
Calhoun 2,047 50.6% 1,911 47.2% 90 4,048 D+3.4
Greene 2,306 58.8% 1,556 39.7% 59 3,921 D+19.1
Keokuk 1,978 50.9% 1,864 48.0% 42 3,884 D+2.9
Sac 1,951 51.5% 1,764 46.6% 70 3,785 D+4.9
Clarke 2,269 60.6% 1,385 37.0% 91 3,745 D+23.6
Mitchell 2,019 54.5% 1,584 42.8% 100 3,703 D+11.7
Humboldt 1,834 50.1% 1,771 48.4% 56 3,661 D+1.7
Palo Alto 2,003 56.6% 1,415 40.0% 118 3,536 D+16.6
Montgomery 1,230 35.0% 2,213 63.0% 69 3,512 R+28.0
Monona 1,883 53.9% 1,492 42.7% 118 3,493 D+11.2
Louisa 1,783 51.8% 1,559 45.3% 101 3,443 D+6.5
Emmet 1,855 55.8% 1,395 41.9% 76 3,326 D+13.8
Howard 1,920 57.9% 1,320 39.8% 75 3,315 D+18.1
Adair 1,753 53.5% 1,450 44.2% 76 3,279 D+9.2
Lucas 1,707 53.9% 1,399 44.2% 59 3,165 D+9.7
Pocahontas 1,576 51.0% 1,434 46.4% 82 3,092 D+4.6
Davis 1,714 56.2% 1,270 41.7% 64 3,048 D+14.6
Worth 1,793 60.2% 1,080 36.3% 103 2,976 D+24.0
Decatur 1,618 55.5% 1,222 41.9% 76 2,916 D+13.6
Van Buren 1,324 47.5% 1,389 49.8% 77 2,790 R+2.3
Monroe 1,566 57.5% 1,099 40.4% 57 2,722 D+17.2
Ida 1,304 49.8% 1,255 47.9% 62 2,621 D+1.9
Taylor 1,381 53.2% 1,172 45.2% 42 2,595 D+8.1
Fremont 1,056 40.8% 1,495 57.7% 39 2,590 R+16.9
Audubon 1,363 53.9% 1,130 44.7% 35 2,528 D+9.2
Wayne 1,241 53.1% 1,060 45.3% 37 2,338 D+7.7
Osceola 783 34.4% 1,441 63.4% 50 2,274 R+28.9
Ringgold 1,295 59.0% 866 39.4% 35 2,196 D+19.5
Adams 937 54.0% 764 44.1% 33 1,734 D+10.0

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