Missouri's 3rd Congressional District: Map, Representative, Demographics

Current district lines U.S. Census Bureau TIGER/Line ↗

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Your representatives

Robert F. Onder, Jr.

Robert F. Onder, Jr.

Republican

Representative since Jan 3, 2025

Raised $950,350 · Cash on hand $471,459 (2026 cycle) · FEC filing ↗ · Through Jul 15, 2026

Full profile →

How Robert F. Onder, Jr. voted

DateMeasurePositionChamber result
9/16/26
House
Retire through Ownership Act
On Motion to Suspend the Rules and Pass Suspension of the rulesA fast-track House procedure, usually for measures expected to have broad support. Debate is limited to 40 minutes, no amendments can be offered, and it needs a two-thirds vote of members voting — not a simple majority. A yes vote passes the bill.Rules of the House, Rule XV, clause 1 ↗
Passage
Yea
Passed
9/16/26
House
Water Resources Development Act of 2026
On Motion to Suspend the Rules and Pass, as Amended Suspension of the rulesA fast-track House procedure, usually for measures expected to have broad support. Debate is limited to 40 minutes, no amendments can be offered, and it needs a two-thirds vote of members voting — not a simple majority. A yes vote passes the bill. “As amended” means changes written into the motion itself are included.Rules of the House, Rule XV, clause 1 ↗
Passage
Yea
Passed
9/16/26
House
Ratepayer Protection Act
On Motion to Suspend the Rules and Pass, as Amended Suspension of the rulesA fast-track House procedure, usually for measures expected to have broad support. Debate is limited to 40 minutes, no amendments can be offered, and it needs a two-thirds vote of members voting — not a simple majority. A yes vote passes the bill. “As amended” means changes written into the motion itself are included.Rules of the House, Rule XV, clause 1 ↗
Passage
Yea
Passed
9/16/26
House
Providing for congressional disapproval under chapter 8 of title 5, United States Code, of the rule issued by the Environmental Protection Agency relating to the "California State Nonroad Engine Pollution Control Standards; Commercial Harbor Craft Regulations; Notice of Decision".
On Passage PassageThe vote on whether this chamber approves the measure — usually by a simple majority of those voting. It becomes law only once both chambers pass the same text and the president signs it, or Congress overrides a veto.House: The Legislative Process ↗
Passage
Yea
Passed
9/16/26
House
PROOF Act
On Passage PassageThe vote on whether this chamber approves the measure — usually by a simple majority of those voting. It becomes law only once both chambers pass the same text and the president signs it, or Congress overrides a veto.House: The Legislative Process ↗
Passage
Yea
Passed

See full voting record →

2026 elections

Election day is Tuesday, Nov. 3, 2026.

Past results

2022 general election

CandidatePartyVotesPercent
Blaine LuetkemeyerWinnerR180,74665.11%
Bethany MannD96,85134.89%

FEC ↗

2020 general election

Held under different district lines
CandidatePartyVotesPercent
Blaine LuetkemeyerWinnerR282,86669.44%
Megan RezabekD116,09528.50%
Leonard J. Steinman IILIB8,3442.05%
Thomas (Tom) ClappWrite-in430.01%

FEC ↗

Demographics

MeasureThis districtMissouriUnited States
Population799,8776,245,466340,110,990
Median age (years)39.739.439.2
Median household income$84,323$71,589$81,604
Below poverty level10.4%12.3%12.1%
Bachelor's degree or higher (age 25+)36.4%33.5%36.8%
Race and ethnicity
Hispanic or Latino (of any race)3.6%5.6%20.0%
Not Hispanic or Latino
White alone84.0%76.2%56.3%
Black or African American alone4.8%10.4%11.7%
Asian alone2.4%2.3%6.2%
American Indian and Alaska Native alone, Native Hawaiian and Other Pacific Islander alone, Some Other Race alone, Two or More Races5.2%5.5%5.8%
Foreign-born4.1%4.9%14.8%
Veterans (civilian adults 18+)6.7%7.0%5.9%

Census estimates. American Community Survey 2024 1-year, Data Profile ↗