# 1998 United States Senate election in Colorado

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vte :
The 1998 United States Senate election in Colorado was held November 3, 1998, 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. Incumbent Senator Ben Nighthorse Campbell won re-election to a second term by a landslide. This was Campbell's first election as a Republican as he left the Democratic Party in 1995.
As of 2024, this is the last time that a Republican won the Class 3 Senate seat from Colorado, and the last time that a Native American was elected to the United States Senate until 2022.

## Democratic primary
### Candidates

* Dottie Lamm, former First Lady of Colorado
* Gil Romero

### Results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Dottie Lamm | 84,929 | 57.98% |
| | Democratic | Gil Romero | 61,548 | 42.02% |
| Total votes | Total votes | Total votes | 146,477 | 100.00% |

## Republican primary
### Candidates

* Ben Nighthorse Campbell, incumbent U.S. Senator
* Bill Eggert, 1994 Republican congressional candidate

### Results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Ben Nighthorse Campbell (Incumbent) | 154,702 | 70.62% |
| | Republican | Bill Eggert | 64,347 | 29.38% |
| Total votes | Total votes | Total votes | 219,049 | 100.00% |

## General election
### Candidates

* Ben Nighthorse Campbell (R), incumbent U.S. Senator
* Dottie Lamm, former First Lady of Colorado

### Campaign

Campbell, who was elected in 1992 as a Democrat, switched parties after the 1994 Republican Revolution. He faced a primary challenger, but won with over 70% of the vote. In the general election, Democratic nominee Dottie Lamm criticized Campbell of flip flopping from being a moderate liberal to moderate conservative. In fact, throughout the entire campaign, Lamm mostly sent out negative attack advertisements about Campbell.

### Results

General election :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Ben Nighthorse Campbell (Incumbent) | 829,370 | 62.49% | +19.78% |
| | Democratic | Dottie Lamm | 464,754 | 35.02% | −16.76% |
| | Libertarian | David S. Segal | 14,024 | 1.06% | +1.06% |
| | Constitution | Kevin Swanson | 9,775 | 0.74% | |
| | Natural Law | Jeffrey Peckham | 4,101 | 0.31% | |
| | Independent | John Heckman | 3,230 | 0.24% | |
| | Independent | Gary Swing | 1,981 | 0.15% | |
| Majority | Majority | Majority | 364,616 | 27.47% | +18.40% |
| Turnout | Turnout | Turnout | 1,327,235 | | |
| | Republican hold | Republican hold | Swing | | |