---
type: "Bill"
title: "Revise violent offender registry laws"
description: "Revise violent offender registry laws"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2021"
identifier: "HB 91"
citation: "Montana HB 91 (2021)"
classification: ["bill"]
subjects: ["Crimes"]
status: "enacted"
primary_sponsors: ["Robert Farris-Olsen"]
version_count: 4
action_count: 61
vote_count: 6
first_action: "2020-09-16"
last_action: "2021-04-16"
source: "openstates"
source_identifier: "ocd-bill/fa4591ae-acd7-4c91-8ab3-dcc15e9194c7"
source_url: "http://laws.leg.mt.gov/legprd/LAW0210W$BSIV.ActionQuery?P_BILL_NO1=91&P_BLTP_BILL_TYP_CD=HB&Z_ACTION=Find&P_SESS=20211"
source_hash: "5543c27ac32bd90ab25bfafe13066b7c98b8744fac7069419fad77062e94beb7"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-mt"]
---

# Montana HB 91 (2021) — Revise violent offender registry laws

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **HB0091_1.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0099//HB0091_1.pdf)
2. **HB0091_2.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0099//HB0091_2.pdf)
3. **HB0091_X.pdf** (committee substitute) — [source](https://leg.mt.gov/bills/2021/HB0099//HB0091_X.pdf)
4. **Enrolled** (enrolled) — [source](https://leg.mt.gov/bills/2021/billpdf/HB0091.pdf)

## Votes

- Do Pass — **67–32** (pass) · lower
- Do Concur — **42–8** (pass) · upper
- Do Pass — **70–30** (pass) · lower
- BE CONCURRED IN — **11–0** (pass) · upper
- DO PASS AS AMENDED — **19–0** (pass) · lower
- Do Concur — **39–11** (pass) · upper

## Sponsors

- Robert Farris-Olsen — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2020-09-16** Draft Request Received
- **2020-12-01** Draft to Requester for Review
- **2020-12-04** Draft in Legal Review
- **2020-12-04** Draft in Edit
- **2020-12-08** Draft to Drafter - Edit Review
- **2020-12-10** Draft in Input/Proofing
- **2020-12-11** Draft in Final Drafter Review
- **2020-12-11** Bill Draft Text Available Electronically
- **2020-12-11** Executive Director Review
- **2020-12-11** Draft in Input/Proofing
- **2020-12-11** Draft in Final Drafter Review
- **2020-12-11** Bill Draft Text Available Electronically
- **2020-12-15** Executive Director Review
- **2020-12-15** Draft in Assembly
- **2020-12-17** Introduced Bill Text Available Electronically
- **2020-12-22** Introduced `introduction`
- **2020-12-24** Referred to Committee - (H) Judiciary `referral-committee`
- **2020-12-29** Fiscal Note Requested
- **2021-01-04** First Reading - (H) Judiciary `reading-1`
- **2021-01-11** Hearing - (H) Judiciary
- **2021-01-12** Fiscal Note Received
- **2021-01-13** Fiscal Note Unsigned
- **2021-01-13** Sponsor Rebuttal to Fiscal Note Requested
- **2021-01-13** Fiscal Note Printed
- **2021-01-13** Revised Fiscal Note Requested
- **2021-01-14** Revised Fiscal Note Received
- **2021-01-14** Revised Fiscal Note Signed
- **2021-01-14** Revised Fiscal Note Printed
- **2021-01-15** Tabled in Committee - (H) Judiciary `amendment-deferral`
- **2021-01-18** Revised Fiscal Note Requested
- **2021-01-20** Revised Fiscal Note Received
- **2021-01-20** Revised Fiscal Note Signed
- **2021-01-20** Amendments Available
- **2021-01-21** Revised Fiscal Note Printed
- **2021-02-24** Taken from Table in Committee - (H) Judiciary
- **2021-02-24** Committee Executive Action--Bill Passed as Amended - (H) Judiciary `committee-passage`
- **2021-02-25** Committee Report--Bill Passed as Amended - (H) Judiciary `committee-passage`
- **2021-02-27** Printed - New Version Available
- **2021-03-01** Scheduled for 2nd Reading
- **2021-03-01** 2nd Reading Passed `reading-2`
- **2021-03-02** Scheduled for 3rd Reading
- **2021-03-02** 3rd Reading Passed `passage, reading-3`
- **2021-03-02** Transmitted to Senate
- **2021-03-08** First Reading `reading-1`
- **2021-03-08** Referred to Committee - (S) Judiciary `referral-committee`
- **2021-03-12** Hearing - (S) Judiciary
- **2021-03-12** Committee Executive Action--Bill Concurred - (S) Judiciary
- **2021-03-12** Committee Report--Bill Concurred - (S) Judiciary
- **2021-03-24** Scheduled for 2nd Reading
- **2021-03-24** 2nd Reading Concurred `reading-2`
- **2021-03-25** Scheduled for 3rd Reading
- **2021-03-25** 3rd Reading Concurred `passage, reading-3`
- **2021-03-25** Returned to House
- **2021-03-26** Sent to Enrolling
- **2021-03-30** Returned from Enrolling
- **2021-03-30** Printed - Enrolled Version Available
- **2021-04-01** Signed by Speaker
- **2021-04-06** Signed by President
- **2021-04-06** Transmitted to Governor `executive-receipt`
- **2021-04-15** Signed by Governor `executive-signature`
- **2021-04-16** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/fa4591ae-acd7-4c91-8ab3-dcc15e9194c7`. Confidence: reported (aggregated from official Montana legislature records).