ColoradoSB26-0132026 Regular SessionSenate

Exclude Cohabitation from Elements of Bigamy

Sponsored By: Janice Marchman (Democratic), Nick Hinrichsen (Democratic), Yara Zokaie (Democratic)

Signed by Governor

Crimes, Corrections, & Enforcement

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Bill Overview

Analyzed Economic Effects

1 provisions identified: 1 benefits, 0 costs, 0 mixed.

Living together alone no longer means bigamy

Colorado removes living together as a basis for bigamy and repeals the related definition of cohabitation. Bigamy still covers marrying or entering a civil union in Colorado with someone else while already married. It also covers someone still in a civil union marrying or entering another civil union with a different partner. Without a referendum petition, the changes start at 12:01 a.m. the day after the 90-day period following final legislative adjournment. The law cites August 12, 2026 as the illustrative start date. A referendum petition delays the changes unless voters approve them at the November 2026 general election. After voter approval, the changes take effect on the date the governor officially declares the vote.

Sponsors & Cosponsors

Sponsors

  • Janice Marchman

    Democratic • Senate

  • Nick Hinrichsen

    Democratic • Senate

  • Yara Zokaie

    Democratic • House

Cosponsors

  • Jennifer Bacon

    Democratic • House

  • Javier Mabrey

    Democratic • House

  • Kenny Nguyen

    Democratic • House

  • Mandy Lindsay

    Democratic • House

  • Manny Rutinel

    Democratic • House

  • Sheila Lieder

    Democratic • House

  • Steven Woodrow

    Democratic • House

  • Cathy Kipp

    Democratic • Senate

  • Iman Jodeh

    Democratic • Senate

  • James Coleman

    Democratic • Senate

  • Julie Gonzales

    Democratic • Senate

  • Katie Wallace

    Democratic • Senate

  • Marc Snyder

    Democratic • Senate

  • Mike Weissman

    Democratic • Senate

Roll Call Votes

All Roll Calls

Yes: 317 • No: 52

Senate vote • 3/13/2026

House amendments: Repass

Yes: 27 • No: 7

Senate vote • 3/13/2026

House amendments: Concur

Yes: 31 • No: 3

House vote • 3/11/2026

Third reading: Amd (l.009)

Yes: 64 • No: 1

House vote • 3/11/2026

Third reading: Perm

Yes: 56 • No: 8

House vote • 3/11/2026

Third reading: Bill

Yes: 46 • No: 19

House vote • 3/10/2026

Committee of the whole: Amd (h.001)

Yes: 52 • No: 5

House vote • 3/4/2026

Refer Senate Bill 26-013 to the Committee of the Whole.

Yes: 8 • No: 3

Senate vote • 2/11/2026

Third reading: Bill

Yes: 27 • No: 5

Senate vote • 2/4/2026

Refer Senate Bill 26-013 to the Committee of the Whole.

Yes: 6 • No: 1

Actions Timeline

  1. Governor Signed

    3/26/2026House
  2. Signed by the Speaker of the House

    3/18/2026House
  3. Sent to the Governor

    3/18/2026House
  4. Signed by the President of the Senate

    3/17/2026Senate
  5. Senate Considered House Amendments - Result was to Concur - Repass

    3/13/2026Senate
  6. Senate Considered House Amendments - Result was to Laid Over to 03/13/2026

    3/12/2026Senate
  7. House Third Reading Passed with Amendments - Floor

    3/11/2026House
  8. House Second Reading Special Order - Passed with Amendments - Floor

    3/10/2026House
  9. House Second Reading Laid Over Daily - No Amendments

    3/9/2026House
  10. House Committee on Judiciary Refer Unamended to House Committee of the Whole

    3/4/2026House
  11. Introduced In House - Assigned to Judiciary

    2/12/2026House
  12. Senate Third Reading Passed - No Amendments

    2/11/2026Senate
  13. Senate Second Reading Passed - No Amendments

    2/10/2026Senate
  14. Senate Second Reading Laid Over to 02/10/2026 - No Amendments

    2/9/2026Senate
  15. Senate Committee on Judiciary Refer Unamended to Senate Committee of the Whole

    2/4/2026Senate
  16. Introduced In Senate - Assigned to Judiciary

    1/14/2026Senate

Bill Text

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