HB 626 Montana House · 2025 Regular Session

Generally revise DUI laws

House Bill 626 revises Montana's laws concerning driving under the influence (DUI), directly affecting individuals charged with these offenses. The bill redefines "prior offense" to include pending charges, which impacts how repeat DUI offenses are categorized. It also modifies the penalties for first, second, and third DUI offenses, including increased fines and imprisonment terms, particularly when passengers under 16 are present. Additionally, the bill outlines conditions for suspending parts of sentences, often requiring participation in chemical dependency treatment or monitoring programs.
Bill status signed all 5 stages cleared
Introduction
Feb 2025
Committee Review
Apr 2025
House Passage
May 2025
Senate Passage
May 2025
Signed into Law
May 2025
Introduced Feb 21, 2025 Signed May 19, 2025
Maddy AI version diff · 7 comparisons

What changed between versions

HB0626_X(3).pdf HB0626_X(4).pdf · 3 edits
MINOR
This bill fundamentally rewrites the sentencing rules for driving under the influence (DUI) in Montana. It replaces the old penalty structure with a new definition of 'conviction' that counts pending charges and future offenses while a person is waiting for their current sentence. This change ensures that if a driver commits another DUI while awaiting sentencing for a first offense, that new charge counts as a prior offense, leading to harsher penalties immediately.
Scope change
The bill expands the scope of what counts as a 'prior offense' to include pending charges and subsequent offenses committed while awaiting sentencing, whereas previously only final convictions counted.
DEFINITION

The definition of 'conviction' was changed to include pending or subsequent offenses that result in a conviction before the current sentence is finalized.

REQUIREMENT

The penalty structure was completely rewritten to reflect the new definition, ensuring that repeat offenders caught during the waiting period face escalated sentencing.

The old specific sentencing guidelines for first, second, and third offenses were removed and replaced by the new logic based on the expanded definition of prior convictions.

Floor votes · Senate Apr 8, 2025 · House Apr 17, 2025

How they voted

3810
Passed · 2 other
Total votes 50
Apr 8, 2025
D Democratic18
7 Yea 10 Nay 1
55% Nay
R Republican32
31 Yea 1
96% Yea
Vote distribution
All Yea All Nay Mixed No data
Full legislative history

Actions timeline

Total actions
43
Key actions
9
Committee
6
Amendments
1
May 13, 2025
Signed into law
(H) Signed by Governor
lower
May 6, 2025
Upper · Passed
(S) Signed by President
upper
May 2, 2025
Lower · Passed
(H) Signed by Speaker
lower
Apr 17, 2025
House · Passed
House Vote: pass (81-18-1)
house
Apr 8, 2025
Senate · Passed
Senate Vote: pass (38-10-2)
senate
Apr 8, 2025
Introduced
(S) Returned to House with Amendments
upper
Apr 4, 2025
Upper · Passed
(S) Committee Report - (S) Judiciary
upper
Apr 4, 2025
Upper · Passed
(S) Committee Executive Action - (S) Judiciary
upper
Mar 14, 2025
Committee
(S) Referred to Committee - (S) Judiciary
upper
Feb 28, 2025
Lower · Passed
(H) Committee Report - (H) Judiciary
lower
Feb 28, 2025
Lower · Passed
(H) Committee Executive Action - (H) Judiciary
lower
Feb 21, 2025
Committee
(H) Referred to Committee - (H) Judiciary
lower
Feb 21, 2025
Introduced
(H) Introduced
lower
1 primary · 0 co-sponsors

Sponsors

Role
Legislator
Party
State
District
P
Photo of Bill Mercer
Bill Mercer
RRepublican
MT
52