SB 508 — Generally revise driving under the influence laws for THC levels in drivers under 21
Last action — Chapter Number Assigned
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✓Introduced
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✓In Committee
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✓Passed Senate
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✓Passed House
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✓To Executive
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6Enacted
This bill has been enacted into law. Introduced December 14, 2024. Enacted.
Signed by Governor Greg Gianforte (Republican) on May 05, 2025.
Odds of enactment
High chanceBased on the sponsor, cosponsors, and committee posture, this bill has a high chance of becoming law.
Upgrade to see the exact probability and what's driving it.
A statistical estimate from our own model of past outcomes — an insight, not a guarantee. Policymaking is volatile.
Prognosis
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Enacted
Current position in the legislative process.
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1 sponsor
1 primary, 0 co-sponsors signed on.
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Cleared a recorded vote
Passed 2 recorded votes so far.
Based on stage, sponsorship breadth, committee status, recorded votes, and cross-state momentum — a description of the observable signals, not a prediction.
Summary
Generally revise driving under the influence laws for THC levels in drivers under 21
Bill Text
We don't have the full text on file for this bill yet.
Read SB 508 on the official Montana source →Action History
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Chapter Number Assigned
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(S) Signed by Governor
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(S) Transmitted to Governor
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(H) Signed by Speaker
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(S) Signed by President
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(S) Returned from Enrolling
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(S) Sent to Enrolling
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(H) 3rd Reading
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(H) Scheduled for 3rd Reading
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(H) 2nd Reading
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(H) Scheduled for 2nd Reading
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(H) Committee Report
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(H) Committee Executive Action
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(H) Hearing
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(H) 1st Reading
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(H) Referred to Committee
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(S) Transmitted to House
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(S) 3rd Reading
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(S) Scheduled for 3rd Reading
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(S) 2nd Reading
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(S) Scheduled for 2nd Reading
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(S) Committee Report
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(S) Committee Executive Action
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(S) Hearing
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(S) Referred to Committee
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(S) 1st Reading
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(S) Introduced
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(LC) Draft Delivered to Requester
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(LC) Draft Ready for Delivery
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(LC) Draft in Assembly
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(LC) Draft in Final Drafter Review
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(LC) Draft in Input/Proofing
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(LC) Draft in Edit
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(LC) Draft in Legal Review
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(LC) Draft Taken Off Hold
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(LC) Draft On Hold
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(LC) Drafter Assigned
Sponsors
- Legislator #91 · Primary
Sponsorship breakdown
Export CSV (upgrade) →1 sponsors · 0 co-sponsors · 205 not signed on · 44 voted No
Sponsors (1)
- Legislator #91
Co-sponsors (0)
None.
Not signed on (205)
205 members have not signed on to this bill.
Show all 205 →"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.
Votes
| Party | Yea | Nay | Present | Not Voting |
|---|---|---|---|---|
| Unaffiliated | 62 | 37 | 0 | 1 |
| Total | 62 | 37 | 0 | 1 |
| % of votes cast | 62% | 37% | 0% | 1% |
How each member voted (100)
| Party | Yea | Nay | Present | Not Voting |
|---|---|---|---|---|
| Unaffiliated | 42 | 7 | 0 | 1 |
| Total | 42 | 7 | 0 | 1 |
| % of votes cast | 84% | 14% | 0% | 2% |
How each member voted (50)
Subjects
Frequently asked questions
- What does SB 508 do?
- Generally revise driving under the influence laws for THC levels in drivers under 21
- Who sponsors SB 508?
- SB 508 is sponsored by Legislator #91.
- What is the current status of SB 508?
- This bill has been enacted into law. Introduced December 14, 2024. Enacted.
- Where can I track SB 508?
- Track SB 508 free on One Click Politics — get push/email alerts when it moves.
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Last checked for changes 2 months ago · updated continuously
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