U.S. House · Illinois, District 12

Rep. Mike Bost

Republican Serving since Jan. 6, 2015Term ends Jan. 3, 2027
Compare Official website ↗
Votes with own party 98% About as expected Higher than 106 of 219 House Republicans Votes with the President 100% About as expected 100% on legislation only Bipartisan bills led 13 More than 51% of House members Liberal-to-conservative rank 60thpercentile in all of Congress · 21st percentile among Republicans

Where they sit

Seated by voting record in the House. Percentiles run from 0 (most liberal) to 100 (most conservative).

How this is measured →
Bost
← Most liberalThe aisleMost conservative →
Votes with DemocratsCrosses party linesVotes with Republicans

Mike Bost's seat is marked. Seats run from most liberal (left) to most conservative (right). Color shows how often each member crosses party lines toward the middle on votes that divide the parties: solid blue or red means almost never, and purple means on at least 1 in 10 of those votes. Gray seats are members too new to score. How this is measured

All of Congress60thpercentile
More conservative than 59% of all members of Congress.
Most liberalMost conservative
214th most conservative of 531
Republicans in Congress21stpercentile
More liberal than 78% of Republicans in Congress.
Most liberalMost conservative
59th most liberal of 272
The House61stpercentile
More conservative than 60% of House members.
Most liberalMost conservative
170th most conservative of 431

This score measures who votes with whom. A member who votes no because a bill goes too far, or not far enough, can look more moderate than their views.

With their party and with the President

How this is measured →
Votes with own party
98%
Q1 2025: 100% → Q3 2026: 96%

Higher than 106 of 219 House Republicans.

Actual98%
Expected99%
DifferenceAbout the same

Expected is the typical score for members of the same party whose districts voted like this one for president in 2024.

Democrats Republicans 55%100%

Each line is one House member, grouped by party. The dot is Mike Bost. The dark line is what we'd expect given how this district voted for president in 2024.

On 469 votes that split the partiesReal votes only: 97%See the 469 votes
How this is measured
Votes with the President
100%all votes
Q1 2025: 100% → Q3 2026: 100%

Highest of all 219 House Republicans.

Actual100%
Expected99%
DifferenceAbout the same

Expected is the typical score for members of the same party whose districts voted like this one for president in 2024.

Democrats Republicans 0%100%

Each line is one House member, grouped by party. The dot is Mike Bost. The dark line is what we'd expect given how this district voted for president in 2024.

Based on 142 votes100% on legislation onlySee the 142 votes
How this is measured

Where they broke ranks

Votes where Mike Bost went against most of their party or against the President's stated position.

Every vote

Every roll call in the House this Congress, with how Mike Bost voted, how their party voted and the President's position.

DateVoteTheir voteMost of their partyPresident wantedResult
Loading…

A dash means the parties didn't split on that vote, or the President took no public position before it. “Party-line” and “President took a position” list exactly the votes each score counts: the ones cast Yes or No. Missed votes don't count either way and are under “Missed”.

Votes most like

Your district

Illinois's delegation →

How this district voted for president in 2024

Harris 27.5%Trump 71.0%

Illinois's district lines are not changing for the next Congress.

Contact

Phone
202-225-5661
Office
352 Cannon House Office Building Washington DC 20515-1312

Issue by issue

How often Mike Bost votes with their party, and with the President, on each kind of issue. Issues are the policy areas Congress assigns to each bill. "With their party" counts only votes where most Democrats and most Republicans voted on opposite sides; "With the President" counts only votes where he took a public position first.

Mike Bost sides with their party least often on Labor and Employment (83%) and Agriculture and Food (88%).

Mike BostAverage for House Republicans
  1. Labor and Employment 83%Average 97% · 12 votes
  2. Agriculture and Food 88%Average 87% · 8 votes
  3. Armed Forces and National Security 95%Average 96% · 41 votes
  4. Economics and Public Finance 97%Average 91% · 63 votes
  5. Congress 100%Average 99% · 112 votes
  6. Energy 100%Average 100% · 36 votes
  7. Crime and Law Enforcement 100%Average 100% · 28 votes
  8. Environmental Protection 100%Average 98% · 27 votes
  9. Public Lands and Natural Resources 100%Average 100% · 19 votes
  10. International Affairs 100%Average 98% · 16 votes
  11. Government Operations and Politics 100%Average 100% · 19 votes
  12. Immigration 100%Average 100% · 15 votes
  13. Finance and Financial Sector 100%Average 99% · 13 votes
  14. Education 100%Average 100% · 12 votes
  15. Commerce 100%Average 100% · 8 votes
  16. Law 100%Average 100% · 6 votes
  17. Health 100%Average 100% · 7 votes

Fewer than 5 party-line votes, so not charted: Families (4 votes), Animals (3 votes), Taxation (3 votes), Transportation and Public Works (2 votes), Arts, Culture, Religion (2 votes), Civil Rights and Liberties, Minority Issues (2 votes), Science, Technology, Communications (1 vote), Native Americans (1 vote), Social Welfare (1 vote), Water Resources Development (1 vote), Emergency Management (1 vote), Sports and Recreation (1 vote).

Bipartisan bills led

0 passed their chamber · 0 became law

How this is measured →
How far each bill got:IntroducedPassed one chamberPassed both chambersBecame law

Votes: Voteview (UCLA). Bills: Congress.gov. President's positions: our public list. 2024 results by district: The Downballot. How this is measured · Corrections

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