# 2002 United States Senate election in Iowa

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The 2002 United States Senate election in Iowa was held on November 5, 2002. Incumbent Democratic U.S. Senator Tom Harkin sought re-election to a fourth term in office. Harkin was opposed in the general election by U.S. Congressman Greg Ganske, who fought off a difficult challenger in the Republican primary. Though Harkin narrowly defeated his opponent six years earlier, he was able to defeat Ganske by a comfortable margin to win re-election.

## Democratic primary
### Candidates

* Tom Harkin, incumbent United States Senator

### Results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Tom Harkin (incumbent) | 83,505 | 99.34% |
| | Democratic | Write-ins | 555 | 0.66% |
| Total votes | Total votes | Total votes | 84,060 | 100.00% |

## Republican primary
### Candidates

* Greg Ganske, U.S. Representative from Des Moines
* Bill Salier, hog farmer

### Results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Greg Ganske | 116,229 | 58.97% |
| | Republican | Bill Salier | 80,700 | 40.95% |
| | Republican | Write-ins | 167 | 0.08% |
| Total votes | Total votes | Total votes | 197,096 | 100.00% |

## General election
### Debates

* Complete video of debate, October 6, 2002

### Predictions

| Source | Ranking | As of |
| Sabato's Crystal Ball | Lean D | November 4, 2002 |

### Polling

| Poll source | Date(s) administered | Sample size | Margin of error | Tom Harkin (D) | Greg Ganske (R) | Other / Undecided |
| SurveyUSA | October 27–29, 2002 | 605 (LV) | ± 4.1% | 60% | 38% | 2% |

### Results

United States Senate election in Iowa, 2002 :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Tom Harkin (incumbent) | 554,278 | 54.18% | +2.37% |
| | Republican | Greg Ganske | 447,892 | 43.78% | −2.94% |
| | Green | Timothy A. Harthan | 11,340 | 1.11% | |
| | Libertarian | Richard J. Moore | 8,864 | 0.87% | |
| | Write-in | Write-in | 701 | 0.06% | |
| Majority | Majority | Majority | 106,386 | 10.40% | +5.30% |
| Turnout | Turnout | Turnout | 1,023,075 | | |
| | Democratic hold | Democratic hold | Swing | | |

#### Counties that flipped from Republican to Democratic

* Adair (Largest city: Greenfield)
* Adams (Largest city: Corning)
* Allamakee (Largest city: Waukon)
* Audubon (Largest city: Audubon)
* Calhoun (Largest city: Rockwell City)
* Carroll (Largest city: Carroll)
* Cherokee (Largest city: Cherokee)
* Clay (Largest city: Spencer)
* Decatur (Largest city: Lamoni)
* Franklin (Largest city: Hampton)
* Guthrie (Largest city: Guthrie Center)
* Hancock (Largest city: Garner)
* Hardin (Largest city: Iowa Falls)
* Kossuth (Largest city: Algona)
* Monona (Largest city: Onawa)
* Pocahontas (Largest city: Pocahontas)
* Ringgold (Largest city: Mount Ayr)
* Taylor (Largest city: Bedford)
* Union (Largest city: Creston)
* Woodbury (Largest city: Sioux City)
* Wright (Largest city: Eagle Grove)
* Louisa (largest city: Wapello)
* Buena Vista (largest city: Storm Lake)
* Humboldt (largest city: Humboldt)
* Ida (largest city: Ida Grove)
* Sac (largest city: Sac City)
* Dickinson (Largest city: Spirit Lake)
* Wayne (Largest city: Corydon)

#### Counties that flipped from Democratic to Republican

* Delaware (Largest city: Manchester)