Member brief No. IL-12
Reviewed October 31, 2026
IL-12 · Illinois
Mike Bost
Republican. Harris won Illinois in 2024. Not flagged for 2032 redistricting risk.
- Age on Election Day 2028
- 67
- Born December 30, 1960.
- Lean
- R+22
- Solidly Republican. Cook PVI, 2026 lines.
- In the House since
- 2015
- Served since January 6, 2015.
- Cash on hand
- $845K
- $844,809. Reporting period ended October 14, 2026
The 2026 race
- November 3, 2026
- Re-elected
Over Julie Fortier (D). Called by NBC News on November 4, 2026.
- Primary
- Unopposed
The only name on the ballot, March 17.
Endorsements, 2026
Endorsed: Donald Trump.
None on record: Club for Growth, Turning Point Action, MAHA PAC.
What a race here costs
TV: Paducah, KY–Cape Girardeau, MO–Harrisburg, 379,000 homes. The district is 33.6% of the market; 5 markets in all.
2026 primary: $628K spent, $7.71 a vote
2024 general: $454K spent, $1.24 a vote
In the House, 119th Congress
- Chair of the Veterans’ Affairs Committee
Committees: Agriculture · Transportation and Infrastructure · Veterans’ Affairs
General-election outcomes
- 2024 vote share
- 74.19%
- Victory margin
- +48.39 pts
- Trump, 2024
- 70.96% · +43.42 pts
Margin 4.96 points above Trump. Vote share 3.23 points above.
2024 election districts. Valid votes; margin over the runner-up. Runner-up: Brian Roberts. Returns · Trump baseline · Method. Reviewed November 5, 2026.
Money, past cycles
| Cycle | Raised | From individuals | Cash at year end |
|---|---|---|---|
| 2020 | $1.9M | 38% | $414K |
| 2022 | $1.7M | 44% | $390K |
| 2024 | $3.2M | 46% | $352K |
Scorecards and grades
- Conservative average, out of 100
- 75.7
- Progressive average, out of 100
- 10.3 (LCV 5, Progressive Punch 6, Stop Corruption Now 20)
- IAP Action score, immigration
- 114, rank 97 of 431
- Gun Owners of America grade, 2024
- A
Read October 4, 2026 from the member’s page on heritageaction.com, clubforgrowth.org, tpaction.com, gopscorecard.limitedgov.org.