# 1998 United States Senate election in Idaho

"none" is preferred when the title is sufficiently descriptive; see [[WP:SDNONE]]
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vte :
The 1998 United States Senate election in Idaho 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 Republican U.S. Senator Dirk Kempthorne decided to retire after one term to run for governor. Republican nominee Mike Crapo won the open seat.

## Democratic primary
### Candidates

* Bill Mauk, Chairman of the Idaho Democratic Party

### Results

Democratic primary results :
| Party | Party | Candidate | Votes | % |
| | Democratic | Bill Mauk | 22,503 | 100.00% |
| Total votes | Total votes | Total votes | 22,503 | 100.00% |

## Republican primary
### Candidates

* Mike Crapo, U.S. Representative
* Matt Lambert

### Results

Republican primary results :
| Party | Party | Candidate | Votes | % |
| | Republican | Mike Crapo | 110,205 | 87.27% |
| | Republican | Matt Lambert | 16,075 | 12.73% |
| Total votes | Total votes | Total votes | 126,280 | 100.00% |

## General election
### Candidates

* Mike Crapo (R), U.S. Representative
* George Mansfeld (NL)
* Bill Mauk (D), Chairman of the Idaho Democratic Party

### Results

General election results :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Mike Crapo | 262,966 | 69.54% | +13.01% |
| | Democratic | Bill Mauk | 107,375 | 28.39% | −15.08% |
| | Natural Law | George J. Mansfeld | 7,833 | 2.07% | +2.07% |
| Majority | Majority | Majority | 155,591 | 41.14% | +28.10% |
| Turnout | Turnout | Turnout | 378,174 | | −20.97% |
| | Republican hold | Republican hold | Republican hold | Republican hold | Republican hold |