# 2010 United States Senate election in Iowa

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The 2010 United States Senate election in Iowa was held on November 2, 2010, alongside other elections to the United States Senate in other states as well as elections to the United States House of Representatives and various state and local elections in Iowa. The party primary elections were held on June 8, 2010. Incumbent Republican U.S. Senator Chuck Grassley won reelection to a sixth term. This was the first time since 1986 where the losing Democratic United States Senate nominee carried any of the counties in Iowa for this seat.

## Republican primary
### Candidates

* Chuck Grassley, incumbent U.S. Senator

### Results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Chuck Grassley (incumbent) | 197,194 | 98.0% |
| | Republican | Write-ins | 3,926 | 2.0% |
| Total votes | Total votes | Total votes | 201,120 | 100.0% |

## Democratic primary
### Candidates

* Roxanne Conlin, former United States Attorney for the Southern District of Iowa
* Bob Krause, former Iowa State Representative and nominee for Treasurer in 1978
* Tom Fiegen, former Iowa State Senator

### Campaign

Three Democrats sought the Democratic nomination. Former State Representative and Iowa Department of Transportation official Bob Krause drew attention for implying that Grassley had been in office too long, remarking to supporters in Des Moines: "As a good farmer, Sen. Grassley must recognize that 51 years, or 58 years at the end of his term, is a long time to go without rotating crops." Both Krause and former State Senator Tom Fiegen cited Grassley's support of deregulating the financial services industry as reasons for running. Krause said, "Please remember that Farmer Grassley was one that opened the barn door and let the cow out at AIG," while Fiegen, a bankruptcy lawyer, made reducing unemployment and tightening regulation of the financial services industry the cornerstones of his campaign.
Former Iowa Democratic Party Chairman Michael Kiernan said that he had recruited trial lawyer Roxanne Conlin to challenge Grassley. Kiernan's virtual endorsement of Conlin prior to her announcement drew the ire of party members, as it is counter to party rules when there is more than one candidate from the party competing in a primary race. Conlin had been criticized for being unwilling to debate her primary opponents, and for being unfamiliar with and unsupportive of her own party's platform.
On health care, Fiegen and Krause supported a public option, while Conlin didn't state a position, which she had been criticized for. Krause and Feigen claimed she supported supply-side economics. She also displayed an unfamiliarity with the Iowa Democratic Party's platform, repeatedly claiming there was no platform for her to support until after the June 12, 2010 convention.

### Results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Roxanne Conlin | 52,715 | 77.5% |
| | Democratic | Bob Krause | 8,728 | 12.9% |
| | Democratic | Tom Fiegen | 6,357 | 9.4% |
| | Democratic | Write-ins | 177 | 0.2% |
| Total votes | Total votes | Total votes | 67,977 | 100.0% |

## General election
### Candidates

* Roxanne Conlin (D), former U.S. Attorney
* Chuck Grassley (R), incumbent U.S. Senator
* John Heiderscheit (L), attorney

### Campaign

Incumbent Chuck Grassley started the campaign moderately popular, but his approval ratings dropped somewhat during the campaign. However, the seat continued to be considered to be "Safe Republican" by many sources, with CQ Politics noting that Grassley is "one of Iowa's most durable politicians."
Conlin described herself as a "prairie progressive." She supported the recent landmark case of Varnum v. Brien, which legalized gay marriage in the state. She also supported repeal of "don't ask, don't tell."
Before the election, former political advisor John Maxwell claimed that Grassley would have his toughest race since his first U.S. Senate election in 1980, where he defeated incumbent John Culver with 53% of the vote. Grassley won all of his four re-election bids with nearly 70% of the vote against unknown opponents. Grassley won the election with 64.35% of the vote, which, in fact was his closest election since 1980.

### Debates

Grassley and Conlin agreed to one debate. It was on October 26 on Des Moines radio station WHO and Iowa Public Television.

### Predictions

| Source | Ranking | As of |
| Cook Political Report | Solid R | October 26, 2010 |
| Rothenberg | Safe R | October 22, 2010 |
| RealClearPolitics | Safe R | October 26, 2010 |
| Sabato's Crystal Ball | Safe R | October 21, 2010 |
| CQ Politics | Safe R | October 26, 2010 |

### Polling

| Poll source | Dates administered | Chuck Grassley (R) | Roxanne Conlin (D) |
| DailyKos/Research 2000 | October 12–14, 2009 | 51% | 39% |
| Rasmussen Reports | January 26, 2010 | 59% | 31% |
| KCCI-TV | February 15–17, 2010 | 56% | 35% |
| Rasmussen Reports | February 22, 2010 | 53% | 36% |
| Rasmussen Reports | March 17, 2010 | 55% | 36% |
| Rasmussen Reports | April 29, 2010 | 53% | 40% |
| KCCI | May 3–5, 2010 | 49% | 40% |
| Public Policy Polling | May 25–27, 2010 | 57% | 31% |
| Rasmussen Reports | June 14, 2010 | 54% | 37% |
| Rasmussen Reports | August 5, 2010 | 55% | 35% |
| Des Moines Register | September 19–22, 2010 | 61% | 30% |
| Rasmussen Reports | September 22–23, 2010 | 55% | 37% |
| Des Moines Register | October 26–29, 2010 | 61% | 30% |

### Fundraising

| Candidate (party) | Receipts | Disbursements | Cash on hand | Debt |
| Charles Grassley (R) | $5,566,686 | $4,962,347 | $3,457,651 | $6,913,216 |
| Roxanne Conlin (D) | $3,070,816 | $2,653,914 | $416,901 | $100,000 |
| Source: Federal Election Commission |||||

### Results

United States Senate election in Iowa, 2010 :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Chuck Grassley (incumbent) | 718,215 | 64.35% | −5.83% |
| | Democratic | Roxanne Conlin | 371,686 | 33.30% | +5.43% |
| | Libertarian | John Heiderscheit | 25,290 | 2.27% | N/A |
| | Write-in | Write-in | 872 | 0.08% | N/A |
| Total votes | Total votes | Total votes | 1,116,063 | 100.0% | |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |

#### Counties that flipped from Republican to Democratic

* Johnson (largest city: Iowa City)