1998 United States Senate election in Idaho

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1998 United States Senate election in Idaho
Flag of Idaho.svg
  1992 November 3, 1998 2004  
  Mike Crapo official photo.jpg No image.svg
Nominee Mike Crapo Bill Mauk
Party Republican Democratic
Popular vote262,966107,375
Percentage69.54%28.39%

1998 United States Senate election in Idaho results map by county.svg
County results
Crapo:     40–50%     50–60%     60–70%     70–80%     80–90%     >90%

U.S. senator before election

Dirk Kempthorne
Republican

Elected U.S. Senator

Mike Crapo
Republican

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.

Contents

Democratic primary

Candidates

Results

Democratic primary results [1]
PartyCandidateVotes%
Democratic Bill Mauk 22,503 100.00%
Total votes22,503 100.00%

Republican primary

Candidates

Results

Republican primary results [2]
PartyCandidateVotes%
Republican Mike Crapo 110,205 87.27%
Republican Matt Lambert16,07512.73%
Total votes126,280 100.00%

General election

Candidates

Polling

Poll sourceDate(s)
administered
Sample
size [a]
Margin
of error
Mike
Crapo (R)
Bill
Mauk (D)
Undecided
Mason Dixon [3] September 01–03, 19981,208 (LV)± 2.9%61%17%12%

Results

General election results [4]
PartyCandidateVotes%±%
Republican Mike Crapo 262,966 69.54% +13.01%
Democratic Bill Mauk107,37528.39%−15.08%
Natural Law George J. Mansfeld7,8332.07%+2.07%
Majority 155,59141.14%+28.10%
Turnout 378,174−20.97%
Republican hold

See also

Notes

  1. Key:
    A – all adults
    RV – registered voters
    LV – likely voters
    V – unclear

References

  1. "98 Primary - Senate". Archived from the original on September 30, 2011. Retrieved April 24, 2011.
  2. "98 Primary - Senate". Archived from the original on September 30, 2011. Retrieved April 24, 2011.
  3. "CNN AllPolitics Election '98 - Idaho 1998 Polls". CNN. Archived from the original on June 20, 2025. Retrieved June 20, 2025.
  4. "Office of the Clerk, U.S. House of Representatives".