Missouri 2026 Regular Session Status: In Committee 2 D cosponsors

HJR 166 — Proposes a constitutional amendment that changes a valid marriage from a marriage between a man and a woman to two persons regardless of their genders

Last action — Referred: Emerging Issues(H)

  1. ✓
    Introduced
  2. 2
    In Committee
  3. 3
    Passed House
  4. 4
    Passed Senate
  5. 5
    To Executive
  6. 6
    Enacted

This bill is in committee in the House. Introduced January 14, 2026. It must pass committee before a floor vote.

Next likely step: a committee vote, then a floor vote in the House.

Odds of enactment

Low chance

Based on the sponsor, cosponsors, and committee posture, this bill has a low chance of becoming law.

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A statistical estimate from our own model of past outcomes — an insight, not a guarantee. Policymaking is volatile.

Prognosis

Stalled 18% · moderate confidence

  • In Committee

    Current position in the legislative process.

  • 2 sponsors

    1 primary, 1 co-sponsors signed on.

  • Single-party support

    Sponsorship is currently within one party (2 D).

Based on stage, sponsorship breadth, committee status, recorded votes, and cross-state momentum — a description of the observable signals, not a prediction.

In plain language

This bill proposes a constitutional amendment to allow marriage between two persons regardless of gender in Missouri.

The resolution seeks to change the definition of marriage in Missouri's constitution to include any two persons, not just a man and a woman. It will be voted on in the general election on November 8, 2026, or at a special election called by the governor.

Bill Text

Action History

  1. Referred: Emerging Issues(H)

  2. Read Second Time (H)

  3. Introduced and Read First Time (H)

Sponsors

Sponsorship breakdown

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1 sponsors · 1 co-sponsors · 197 not signed on

Sponsors (1)

Co-sponsors (1)

Not signed on (197)

197 members have not signed on to this bill.

Show all 197 →

"Not signed on" means a member has not sponsored or co-sponsored this bill — it does not imply opposition. Members flagged Voted No have a recorded No vote on this bill.

Whip count is in markup. Polling the chamber and every recorded vote this session. Only the first open is slow. It’s instant for you after this. Calling the roll · Tallying · Engrossing

Subjects

civil-rights
Cross-referencing the record. Reading this bill against every other bill in the corpus by meaning, not keywords. Only the first open is slow. It’s instant for you after this. Matching · Ranking · Engrossing

Frequently asked questions

Who sponsors HJR 166?
HJR 166 is sponsored by Mark Boyko (Democratic) and Michael Burton (Democratic).
What is the current status of HJR 166?
This bill is in committee in the House. Introduced January 14, 2026. It must pass committee before a floor vote.
Where can I track HJR 166?
Track HJR 166 free on One Click Politics — get push/email alerts when it moves.

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Last checked for changes 3 months ago · updated continuously

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