Missouri House · District 105

Colin Wellenkamp

Republican

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Votes with the Speaker 92% On 430 contested votes where both voted · 95% on all votes Votes with own party 90% Partisan rank: 132 of 155 in the House (tied with 6 others) Didn't vote at roll call 12% 123 of 1,022 roll calls · 123 of them excused

Bills passed 0 18 sponsored · 0 became law · Rank 37 of 155 in the House (tied with 118 others) Bills that became law 0 of 0 passed · 0 vetoed

Where they sit

Every current House member, placed from most liberal to most conservative by how they voted on contested bills.

How these numbers work →

← Most liberalThe aisleMost conservative →

Votes with DemocratsCrosses party linesVotes with Republicans

Colin Wellenkamp's seat is marked. Seats run from most liberal (left) to most conservative (right), by contested floor votes. 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 5 of those votes. Gray seats are members too new to score. How these numbers work

Missouri House36thpercentile

More liberal than 63% of the Missouri House.

Most liberalMost conservative

57th most liberal of 155

On the November 3 ballot

Running for Missouri House District 105.

Also on the ballot: Cat Clayton (Democratic)

Who's on your Nov. 3 ballot for the Legislature →

The scores

How these numbers work →

Votes with the Speaker

92%

Each tick is a current House member, by party; the dot is Colin Wellenkamp.

On 430 contested votes where both voted95% on all 858 votes where both voted

Votes with own party

90%

Each tick is a current House member, by party; the dot is Colin Wellenkamp.

On 305 party-line votesPartisan rank: 132 of 155 in the House (tied with 6 others)131 House members vote with their party more often

Bills

The bills Colin Wellenkamp sponsored this term and how far they got. Co-sponsors aren’t counted.

How these numbers work →

Bills: Colin Wellenkamp
	Bills
Sponsored	18
Passed both chambers	0
Became law	0
Vetoed by the Governor	0

Rank by bills passed: Rank 37 of 155 in the House (tied with 118 others) · 37 of 105 Republicans (tied with 68 others)

A bill's sponsor is the member who introduced it; co-sponsors aren't counted.

Bills that passed both chambers

None of the bills Colin Wellenkamp sponsored passed both chambers.

Budget projects

Missouri's appropriation bills don't say which legislator asked for an item, so there's no budget figure for Missouri legislators.

Contested votes where they split

34 against the Speaker; 35 against most of their party.

Contested votes where they split: Colin Wellenkamp
Date	Bill and motion	Their vote	Speaker	Most of their party
May 15, 2026	SB 1002: Creates and modifies provisions relating to elections submitted to the people by a school board of any school district located in St. Charles County Final Passage	Nay	Yea (split)	Yea (split)
May 15, 2026	SB 1002: Creates and modifies provisions relating to elections submitted to the people by a school board of any school district located in St. Charles County Motion to Reconsider	Nay	Yea (split)	Yea (split)
May 15, 2026	SB 1002: Creates and modifies provisions relating to elections submitted to the people by a school board of any school district located in St. Charles County Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
May 14, 2026	SB 1572: Modifies provisions relating to public employee retirement systems House Amendment 2	Nay	Yea (split)	Yea (split)
May 12, 2026	HB 1871: Modifies provisions relating to elections Final Passage	Nay	Yea (split)	Yea (split)
May 12, 2026	HB 1871: Modifies provisions relating to elections Concurrence	Nay	Yea (split)	Yea (split)
May 6, 2026	HB 2018: Appropriates money for the expenses, grants, refunds, and distributions of the several departments and offices of state government Final Passage	Yea	Nay (split)	Yea
April 28, 2026	HB 1758: Establishes the "Daylight Saving as New Standard Time Pact" Third Reading and Final Passage	Yea	Nay (split)	Yea
April 20, 2026	HB 2142: Modifies the "Show MO Act" tax credit caps for qualified motion media production projects Third Reading and Final Passage	Yea	Yea	Nay (split)
April 20, 2026	HB 1736: Modifies provisions governing county sales taxes for park purposes to allow tax revenues to be used for storm water management projects in parks Third Reading and Final Passage	Yea	Yea	Nay (split)
April 7, 2026	HB 1791: Establishes building permit issuance deadlines Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
April 2, 2026	HB 3239: Establishes and modifies provisions relating to adult education Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
March 26, 2026	HB 2748: Modifies requirements for physical education in schools Third Reading and Final Passage	Nay	Excused	Yea (split)
March 24, 2026	HB 2005: Appropriates money for the expenses, grants, refunds, and distributions of the Office of Administration, the Department of Transportation, the Department of… House Amendment 4	Yea	Nay (split)	Nay (split)
March 11, 2026	HB 3146: Modifies provisions for ballot summary statements Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
March 9, 2026	HB 1800: Changes the percentage of the cap on the inflationary growth factor for the assessment growth of real or personal property occurring within a political… Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
March 2, 2026	HB 2167: Modifies provisions for the staffing of the attorney general's office and the capitol Emergency Clause	Nay	Yea (split)	Yea (split)
March 2, 2026	HB 2167: Modifies provisions for the staffing of the attorney general's office and the capitol Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
Feb. 25, 2026	HB 2167: Modifies provisions for the staffing of the attorney general's office and the capitol Amendment	Nay	Yea (split)	Yea (split)
Feb. 18, 2026	HB 2989: Modifies provisions relating to gaming Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
Feb. 16, 2026	HB 2989: Modifies provisions relating to gaming Perfection	Nay	Yea (split)	Yea (split)
Feb. 16, 2026	HB 2384: Creates provisions restricting political subdivisions from imposing requirements that threaten affordability of developments or improvements of property Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
Sept. 9, 2025	HB 1: Creates provisions for redistricting federal congressional seats Third Reading and Final Passage	Nay	Nay	Yea (split)
Sept. 9, 2025	HJR 3: Creates the "Protect Missouri Voters" amendment Third Reading and Final Passage	Yea	Nay (split)	Yea
Sept. 8, 2025	HB 1: Creates provisions for redistricting federal congressional seats Perfection	Yea	Nay (split)	Yea
Sept. 8, 2025	HJR 3: Creates the "Protect Missouri Voters" amendment Perfection	Yea	Nay (split)	Yea
May 12, 2025	SB 105: Modifies provisions relating to invasive plants House Amendment 1	Nay	Yea (split)	Nay
April 29, 2025	SB 7: Modifies provisions relating to health care Third Reading and Final Passage	Yea	Nay (split)	Yea
April 23, 2025	HB 627: Modifies provisions relating to environmental protection House Amendment 3	Yea	Excused	Nay (split)
April 22, 2025	HB 952: Establishes provisions relating to payments for tort liability to insurers Third Reading and Final Passage	Yea	Yea	Nay (split)
April 22, 2025	HB 1264: Creates provisions relating to approval by political subdivisions of certain requests for developments or improvements of property Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
April 14, 2025	HB 126: Modifies provisions relating to elections Third Reading and Final Passage	Yea	Yea	Nay (split)
April 9, 2025	HB 970: Establishes provisions relating to video lottery gaming terminals, licenses, and regulation Third Reading and Final Passage	Nay	Yea (split)	—
April 7, 2025	HB 970: Establishes provisions relating to video lottery gaming terminals, licenses, and regulation Perfection	Nay	Yea (split)	Nay
April 7, 2025	HB 970: Establishes provisions relating to video lottery gaming terminals, licenses, and regulation House Amendment 4	Yea	Nay (split)	Nay (split)
April 7, 2025	HB 507: Modifies provisions relating to elections Third Reading and Final Passage	Yea	Yea	Nay (split)
April 2, 2025	HB 661: Requires municipalities and the department of transportation to reimburse non-rate regulated utilities for site relocation costs incurred due to road… Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
April 2, 2025	HB 507: Modifies provisions relating to elections House Amendment 1	Yea	Yea	Nay (split)
March 26, 2025	HB 1116: Allows real property owners building a fence to enter an adjoining property up to ten feet without liability for trespassing Third Reading and Final Passage	Nay	Excused	Yea (split)
March 13, 2025	HB 567: Modifies provisions relating to employee compensation Emergency Clause	Nay	Yea (split)	Yea (split)
March 13, 2025	HB 567: Modifies provisions relating to employee compensation Previous Question	Nay	Yea (split)	Yea (split)
March 13, 2025	HB 567: Modifies provisions relating to employee compensation Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
Feb. 20, 2025	HB 544: Modifies labeling for certain pesticides Third Reading and Final Passage	Nay	Yea (split)	Yea (split)
Feb. 20, 2025	HB 544: Modifies labeling for certain pesticides Previous Question	Nay	Yea (split)	Yea (split)

Every roll call

How Colin Wellenkamp voted on each of the 1,022 floor roll calls while in office, newest first.

Every roll call: Colin Wellenkamp
Date	Vote	Their vote	Most of their party	Speaker	Yeas–nays
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Contested and party-line votes link to their own pages; the rest link to the official record.

Contact, committees and caucuses

Contact

Official page: house.mo.gov
Email: colin.wellenkamp@house.mo.gov
Capitol office: Room 115-F, 201 W. Capitol Ave., Jefferson City, MO 65101
573-751-2949

Committees

Conservation and Natural Resources
Intergovernmental Affairs Special
Life Sciences
Local Government

Contact details and committee assignments from Open States' data on the Missouri General Assembly, which it collects from the chambers' websites, as of Oct. 15, 2026.

Source: the Missouri House and Senate Journals, Jan. 8, 2025 to Sept. 16, 2026. How these numbers work · Corrections