Mike Crapo is the senior United States senator from Idaho, serving in the Senate since 1999. Before that, he represented Idaho in the U.S. House of Representatives from 1993 to 1999, after building a reputation in Boise and eastern Idaho as a disciplined conservative on budgets, taxes, and institutional procedure.
Born in Idaho Falls, Crapo earned a political science degree from Brigham Young University and a law degree from Harvard Law School. He practiced law in Idaho Falls through much of the 1980s, then entered elected office in the Idaho Senate in 1984. He later became president pro tempore of the Idaho Senate from 1988 to 1992, which positioned him as a central figure in state Republican leadership.
In Washington, Crapo has built his profile around finance, tax policy, and regulatory issues. He has been closely associated with Senate negotiations on banking rules and tax legislation, and he is widely viewed as a detail driven committee legislator who prioritizes technical process, institutional leverage, and policy durability.
Politically, Crapo presents as a consistent conservative with strong ties to Idaho’s business, agriculture, and energy constituencies. His long tenure also includes moments that draw intense attention, including debates over Wall Street oversight, climate policy, gun regulation, and his approach to Senate confirmation norms, which has shifted with the political context and partisan stakes.
Mainstream Conservative
Committee Assignments
Caucus Memberships
Achievements
- Became a central Senate voice on tax and finance policy through long service on high leverage committees.
- Built influence in banking legislation and regulatory debates, often positioned as a key Republican negotiator.
- Advanced Idaho focused priorities on water, agriculture, and natural resource issues through caucus and committee work.
- Promoted nuclear energy development tied to Idaho’s national lab footprint and related federal research efforts.
- Maintained high seniority as the dean of Idaho’s congressional delegation, shaping statewide federal strategy and visibility.
Controversies
- Criticized for close alignment with large financial interests in banking oversight fights and reform negotiations.
- Faced scrutiny over hardline conservative positions on abortion and gun policy, including opposition to expanded background checks.
- Drew backlash for support of withdrawing the United States from the Paris climate framework during the Trump administration.
- Voted against major health care legislation under President Obama and backed repeal efforts that energized opponents.
- Pleaded guilty to a DUI case in 2013, issued a public apology, and faced sustained local press criticism afterward.
Top Donors
| Donor | Total | Individuals | PACs |
|---|---|---|---|
| UnitedHealth Group | $119,900 | $112,400 | $7,500 |
| Apollo Global Management | $58,650 | $58,650 | $0 |
| Elevance Health | $47,900 | $36,900 | $11,000 |
| American Israel Public Affairs Cmte | $45,550 | $37,650 | $7,900 |
| Capital Group | $45,000 | $45,000 | $0 |
Amounts shown reflect organization linked giving; most funds listed here are from individual donors or aligned PACs.
Recent Elections
2016 Margin R +38%
2022 Margin R +27%