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Mark Messmer

R
U.S. Representative · Indiana-8 · 119th, 1 year 8 months
OverviewVotesLegislationCommitteesNewsCampaignsPositionsInterviewCommsEndorsements
Overview of the Representative's office, activities, and communications.

About

Messmer, Mark Brian a Representative from Indiana; born September 1962; graduated from Jasper High School, Jasper, Ind., 1981; B.S., Purdue University, West Lafayette, Ind., 1985; engineer; business owner; member of the Indiana state house of representatives, 2008-2014; member of the Indiana state senate, 2014-2024; elected as a Republican to the One Hundred Nineteenth Congress (January 3, 2025-present).

Official Biography · U.S. Congress.
Years served
1
Bills introduced
16
Enacted
0
Cosponsored
219
Committees
10

Performance & Participation

Votes CastMiddle 50%
98% — Voted in 632 of 645 roll call votes this congress.
Avg 97% · Most: 100% · Least: 18%
Vote IndependenceMiddle 50%
0.5% — Voted against their own party majority 3 of 595 times.
Avg 2.1% · Most independent: 23.7% · Most party-line: 0.0%
Cosponsors AttractedMiddle 50%
170 — Attracted 170 cosponsors across 16 bills.
Avg 299 · Most: 1,868 · Least: 0
Cosponsors Attracted Cross-AisleBottom 25%
6 — Attracted 6 cosponsors across the aisle.
Avg 59 · Most: 1,291 · Least: 0
Cosponsorships GivenMiddle 50%
219 — 219 bills cosponsored.
Avg 304 · Most: 1,768 · Least: 3
Cosponsorships Given Cross-AisleMiddle 50%
15 — 15 bills cosponsored across the aisle.
Avg 59 · Most: 803 · Least: 0
Social Media ToneiTop 25%
NegativePositive
Avg +0.69 · Most: +0.94 · Least: +0.33
Press Release ToneiMiddle 50%
NegativePositive
Avg +0.37 · Most: +0.90 · Least: +0.03

Committee Assignments

10 committees
2026 Voter Guide: Indiana's 8th Congressional District
WFYI Public Media · Sep 23, 2026
Here's who's on the ballot in Vanderburgh County this Nov. 3
Courier & Press · Sep 3, 2026
Here's who's on the ballot in Warrick County this Nov. 3
Courier & Press · Sep 1, 2026
Congress may kill the federal heat rule before OSHA can
Grist · Aug 14, 2026
HOWEY: Hoosier Republicans and the Epstein files
WTHR · Oct 30, 2025
Your actions
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On the ballot Nov 3, 2026
Indiana's 8th U.S. House District
View the Race →Candidate Page →
District
View Office Details →
2026 Campaign Finance
$1.2M
Raised
22%
Individual
36%
PAC
—
Small $
$4K
Self-Funded
452
Donors
Individual 22%PAC 36%Other 42%
Top PAC Donors
AMERICAN COUNCIL OF ENGINEERING COMPANIES (ACEC/PAC)$10K
ALLISON TRANSMISSION INC. POLITICAL ACTION COMMITTEE$10K
AMERICAN CRYSTAL SUGAR COMPANY POLITICAL ACTION COMMITTEE$10K
BUCKEYE LIBERTY POLITICAL ACTION COMMITTEE$10K
BWX TECHNOLOGIES, INC POLITICAL ACTION COMMITTEE$10K
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Data sourced from official congressional records, CRS, and FEC filings. AllCiv Score methodology available at allciv.com/methodology.