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American Ascent

Member brief No. ID-02

Reviewed October 31, 2026

ID-02 · Idaho

Michael K. Simpson

Republican. Trump won Idaho in 2024. Not flagged for 2032 redistricting risk.

Age on Election Day 2028
78
Born September 8, 1950.
Lean
R+13
Solidly Republican. Cook PVI, 2026 lines.
In the House since
1999
Served since January 6, 1999.
Cash on hand
$301K
$300,591. Reporting period ended October 14, 2026

The 2026 race

November 3, 2026
Re-elected

Over Ellie Gilbreath (D). Called by NBC News on November 4, 2026.

Primary
Won with 63.3%

May 19. Next: Brian Keene, 20.9%, and one other.

Also on the November ballot: Will Johanson (Libertarian), Emre Houser (independent), Tripp Charles Hutchinson (independent).

Endorsements, 2026

Endorsed: Donald Trump.

None on record: Club for Growth, Turning Point Action, MAHA PAC.

What a race here costs

TV: Idaho Falls–Pocatello–Jackson, 148,000 homes. The district is 94.5% of the market; 4 markets in all.

2026 primary: $627K spent, $6.26 a vote

2024 general: $461K spent, $1.13 a vote

In the House, 119th Congress

  • Chair of the Appropriations subcommittee on Interior, Environment, and Related Agencies

Committees: Appropriations

General-election outcomes

2024 vote share
61.38%
Victory margin
+30.41 pts
Trump, 2024
61.85% · +26.73 pts

Margin 3.68 points above Trump. Vote share 0.46 points below.

2024 election districts. Valid votes; margin over the runner-up. Runner-up: David Roth. Returns · Trump baseline · Method. Reviewed November 5, 2026.

Money, past cycles

Money raised, the share from individual donors, and cash on hand, by past cycle
CycleRaisedFrom individualsCash at year end
2020$1.0M26%$176K
2022$1.6M33%$138K
2024$1.6M40%$105K

Scorecards and grades

Conservative average, out of 100
67.6
Progressive average, out of 100
13.2 (LCV 10, Progressive Punch 10, Stop Corruption Now 20)
IAP Action score, immigration
97, rank 185 of 431
Gun Owners of America grade, 2024
B-

Read October 4, 2026 from the member’s page on heritageaction.com, clubforgrowth.org, tpaction.com, gopscorecard.limitedgov.org.