---
type: "Bill"
title: "Generally revise DUI laws"
description: "Generally revise DUI laws"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 626"
citation: "Montana HB 626 (2025)"
classification: ["bill"]
subjects: ["Alcohol", "Crimes"]
status: "enacted"
primary_sponsors: ["Bill Mercer"]
version_count: 50
action_count: 41
vote_count: 8
first_action: "2024-12-13T15:01:39+00:00"
last_action: "2025-05-19T17:50:14+00:00"
source: "openstates"
source_identifier: "ocd-bill/e2450580-9447-4695-b0d0-512f7d4ea23c"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC3024?open_tab=sum"
source_hash: "31b31f643c4eb4402b0fac5ba4556bfa3b8602fe6339e3bd933fe40484119054"
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 626 (2025) — Generally revise DUI laws

## Version chain

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

1. **HB0626.001.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=288915)
2. **HB0626.001.002_Amendments-in-Context_final-not condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=288916)
3. **HB0626.002.002_Amendments-in-Context_final-condensed.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300904)
4. **HB0626.002.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=300993)
5. **HB0626_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285598)
6. **HB0626_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290178)
7. **HB0626_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290179)
8. **HB0626_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290180)
9. **HB0626_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290181)
10. **HB0626_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=285361)
11. **HB0626_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290183)
12. **HB0626_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304849)
13. **HB0626_2(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304850)
14. **HB0626_2(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304851)
15. **HB0626_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290185)
16. **HB0626_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290186)
17. **HB0626_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290214)
18. **HB0626_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290215)
19. **HB0626_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290216)
20. **HB0626_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=293342)
21. **HB0626_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304775)
22. **HB0626_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304848)
23. **HB0626_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=290182)
24. **HB0626_3(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304853)
25. **HB0626_3(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304854)
26. **HB0626_3(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304855)
27. **HB0626_3(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304880)
28. **HB0626_3(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304882)
29. **HB0626_3(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304886)
30. **HB0626_3(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=306727)
31. **HB0626_3(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314047)
32. **HB0626_3(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314048)
33. **HB0626_3.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304852)
34. **HB0626_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314050)
35. **HB0626_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320808)
36. **HB0626_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324303)
37. **HB0626_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325117)
38. **HB0626_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325118)
39. **HB0626_X(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325119)
40. **HB0626_X(15).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327090)
41. **HB0626_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314975)
42. **HB0626_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314976)
43. **HB0626_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314983)
44. **HB0626_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314984)
45. **HB0626_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316325)
46. **HB0626_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316329)
47. **HB0626_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316330)
48. **HB0626_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=317340)
49. **HB0626_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=314049)
50. **LC3024.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=283620)

## Votes

- Do Pass — **86–12** (pass) · lower
- Do Concur — **38–10** (pass) · upper
- Do Concur — **41–9** (pass) · upper
- be_concurred_in_as_amended — **6–2** (pass) · upper
- do_pass_as_amended — **17–3** (pass) · lower
- Do Pass — **88–11** (pass) · lower
- Do Concur — **81–18** (pass) · lower
- Do Concur — **94–6** (pass) · lower

## Sponsors

- Bill Mercer — primary (person)

## Timeline

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

- **2024-12-13T15:01:39+00:00** (LC) Drafter Assigned
- **2025-01-11T18:03:08+00:00** (LC) Draft On Hold
- **2025-02-12T22:18:23+00:00** (LC) Draft Taken Off Hold
- **2025-02-14T22:55:55+00:00** (LC) Draft in Legal Review
- **2025-02-14T23:08:43+00:00** (LC) Draft in Edit
- **2025-02-18T15:41:32+00:00** (LC) Draft in Input/Proofing
- **2025-02-18T20:36:09+00:00** (LC) Draft in Final Drafter Review
- **2025-02-18T20:53:35+00:00** (LC) Draft in Assembly
- **2025-02-18T23:04:23+00:00** (LC) Draft Ready for Delivery
- **2025-02-20T23:05:17+00:00** (LC) Draft Delivered to Requester
- **2025-02-21T14:45:22+00:00** (H) Introduced
- **2025-02-21T18:35:16+00:00** (H) Referred to Committee - (H) Judiciary `referral-committee`
- **2025-02-21T19:54:07+00:00** (H) First Reading `reading-1`
- **2025-02-24T21:14:16+00:00** (H) Hearing - (H) Judiciary
- **2025-02-28T19:23:34+00:00** (H) Committee Executive Action--Bill Passed as Amended - (H) Judiciary `committee-passage`
- **2025-02-28T22:19:00+00:00** (H) Committee Report--Bill Passed as Amended - (H) Judiciary `committee-passage`
- **2025-03-05T02:27:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-03-06T15:29:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-03-06T19:13:54+00:00** (H) Transmitted to Senate
- **2025-03-14T23:06:17+00:00** (S) First Reading `reading-1`
- **2025-03-14T23:49:00+00:00** (S) Referred to Committee - (S) Judiciary `referral-committee`
- **2025-03-21T23:18:50+00:00** (S) Hearing - (S) Judiciary
- **2025-03-27T21:04:29+00:00** (S) Hearing - (S) Judiciary
- **2025-04-04T17:00:44+00:00** (S) Committee Executive Action--Bill Concurred as Amended - (S) Judiciary
- **2025-04-04T19:58:00+00:00** (S) Committee Report--Bill Concurred as Amended - (S) Judiciary
- **2025-04-07T19:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-04-07T20:11:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-04-08T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-04-08T20:44:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-04-08T21:47:32+00:00** (S) Returned to House with Amendments
- **2025-04-16T19:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-04-16T19:37:00+00:00** (H) 2nd Reading Senate Amendments Concurred `amendment-amendment, amendment-passage, reading-2, reading-2`
- **2025-04-17T19:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-04-17T21:52:00+00:00** (H) 3rd Reading Passed as Amended by Senate `passage, passage, reading-3, reading-3`
- **2025-04-18T20:13:43+00:00** (H) Sent to Enrolling
- **2025-04-23T17:47:23+00:00** (H) Returned from Enrolling
- **2025-05-02T17:00:20+00:00** (H) Signed by Speaker `passage`
- **2025-05-06T20:00:43+00:00** (S) Signed by President `passage`
- **2025-05-07T15:03:52+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-05-13T19:10:00+00:00** (H) Signed by Governor `executive-signature`
- **2025-05-19T17:50:14+00:00** 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/e2450580-9447-4695-b0d0-512f7d4ea23c`. Confidence: reported (aggregated from official Montana legislature records).