Senate Bill 678
The use of oral fluids for preliminary screening of a person suspected of operating a motor vehicle while intoxicated
Topics: Boat, Drunken driving, Motorcycle, Police, Recreation vehicle, Snowmobile
Became law
The governor signed it on Mar 13, 2026. It's .
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Introduced, passed
Nov 20, 2025
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Committee, passed
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Senate vote, passed
Passed Feb 18, 2026
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Assembly vote, passed
Passed Feb 19, 2026
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Governor, passed
Signed
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Law, here now
2025 Wisconsin Act 99
Latest entry in the official record, Mar 19, 2026: “Representative Emerson added as a cosponsor”
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The same bill was also filed in the Assembly as AB 681. That version died when the session ended.
Terms on this page
Wisconsin Act
The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.
Official term: Act. More in the glossary
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis. More in the glossary
Author
A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.
Official term: Author, coauthor. More in the glossary
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor. More in the glossary
Roll call
A vote where each lawmaker's yes or no is recorded by name.
Official term: Roll call vote. More in the glossary
What it does
Summary by the , the Legislature's nonpartisan drafting office. It's their wording, not ours.
Under current law, no person may operate a motor vehicle while under the influence of an intoxicant, with a detectable amount of a restricted controlled substance in their blood, or with a prohibited alcohol concentration (OWI). If a law enforcement officer has probable cause to believe that a person has committed an OWI violation, the officer may request the person to provide a sample of his or her breath for a preliminary breath screening test. The result of this test is not admissible in any action or proceeding except to show probable cause for an arrest or to prove that additional chemical tests are required.
This bill provides that a law enforcement officer may request a sample of a person’s breath or oral fluids, or both, for a preliminary screening for OWI.
Who's behind it
4 senators are its . All 4 are Republicans.
14 more lawmakers .
See all 18 names Hide the names
Authors (4)
- Jesse James · Republican, Senate
- Howard Marklein · Republican, Senate
- Cory Tomczyk · Republican, Senate
- Van Wanggaard · Republican, Senate
Signed on in support (14)
- Brent Jacobson · Republican, Assembly
- Lindee Brill · Republican, Assembly
- Brienne Brown · Democrat, Assembly
- Calvin Callahan · Republican, Assembly
- Barbara Dittrich · Republican, Assembly
- Jodi Emerson · Democrat, Assembly
- Rob Kreibich · Republican, Assembly
- Paul Melotik · Republican, Assembly
- Dave Murphy · Republican, Assembly
- Jerry O'Connor · Republican, Assembly
- Lori Palmeri · Democrat, Assembly
- Will Penterman · Republican, Assembly
- Jim Piwowarczyk · Republican, Assembly
- Ryan Spaude · Democrat, Assembly
Versions and amendments
Every text the Legislature printed for this bill, including proposed changes. Each opens on the Legislature's site.
How lawmakers voted
There were 2 votes on this bill.
Senate Committee on Judiciary and Public Safety vote on an amendment
Passed, 7 to 1 · Jan 13, 2026
No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.
Official motion: “Report adoption of Senate Amendment 2 recommended by Committee on Judiciary and Public Safety, Ayes 7, Noes 1”. Official record · This vote on its own page
Senate vote
Failed, 4 to 4 · Jan 13, 2026
No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.
Official motion: “Report passage without recommendation, pursuant to Senate Rule 27 (4)(a), by Committee on Judiciary and Public Safety, Ayes 4, Noes 4”. Official record · This vote on its own page
What happened
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Mar 19, 2026
1 more representative signed on in support.
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Mar 13, 2026
The new law was published.
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Mar 13, 2026
The governor signed it. It became 2025 Wisconsin Act 99.
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Mar 12, 2026
Sent to the governor.
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Mar 6, 2026
1 more representative signed on in support.
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Feb 19, 2026
The Assembly passed it too.
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Feb 18, 2026
Sent to the Assembly Committee on Rules.
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Feb 18, 2026
The Assembly received it.
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Feb 18, 2026
The Senate passed it.
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Feb 18, 2026
The Senate adopted it.
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Feb 11, 2026
1 more representative signed on in support.
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Jan 13, 2026
“Report passage without recommendation, pursuant to Senate Rule 27 (4)(a), by Committee on Judiciary and Public Safety, Ayes 4, Noes 4” (the official wording)
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Jan 13, 2026
“Report adoption of Senate Amendment 2 recommended by Committee on Judiciary and Public Safety, Ayes 7, Noes 1” (the official wording)
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Jan 13, 2026
The committee voted on it.
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Jan 6, 2026
1 more representative signed on in support.
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Dec 17, 2025
The committee held a public hearing.
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Dec 9, 2025
1 more representative signed on in support.
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Nov 20, 2025
Sent to the Senate Committee on Judiciary and Public Safety.
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Nov 20, 2025
Introduced in the Senate.
See the official record, word for word Hide the official record
- Nov 20, 2025 · Senate
Introduced by Senators James, Marklein, Tomczyk and Wanggaard; cosponsored by Representatives Dittrich, Brill, Callahan, Kreibich, Melotik, Murphy, O'Connor, Penterman and Piwowarczyk
- Nov 20, 2025 · Senate
Read first time and referred to Committee on Judiciary and Public Safety
- Dec 2, 2025 · Senate
Senate Amendment 1 offered by Senator James
- Dec 9, 2025 · Senate
Representative Palmeri added as a cosponsor
- Dec 17, 2025 · Senate
Public hearing held
- Jan 6, 2026 · Senate
Representative Spaude added as a cosponsor
- Jan 12, 2026 · Senate
Senate Amendment 2 offered by Senator James
- Jan 13, 2026 · Senate
Executive action taken
- Jan 13, 2026 · Senate
Report adoption of Senate Amendment 2 recommended by Committee on Judiciary and Public Safety, Ayes 7, Noes 1
- Jan 13, 2026 · Senate
Report passage without recommendation, pursuant to Senate Rule 27 (4)(a), by Committee on Judiciary and Public Safety, Ayes 4, Noes 4
- Jan 13, 2026 · Senate
Available for scheduling
- Feb 11, 2026 · Senate
Representative B. Jacobson added as a cosponsor
- Feb 16, 2026 · Senate
Senate Amendment 3 offered by Senator James
- Feb 17, 2026 · Senate
Placed on calendar 2-18-2026 pursuant to Senate Rule 18(1)
- Feb 18, 2026 · Senate
Read a second time
- Feb 18, 2026 · Senate
Senate Amendment 2 adopted
- Feb 18, 2026 · Senate
Senate Amendment 3 adopted
- Feb 18, 2026 · Senate
Ordered to a third reading
- Feb 18, 2026 · Senate
Rules suspended to give bill its third reading
- Feb 18, 2026 · Senate
Read a third time and passed
- Feb 18, 2026 · Senate
Ordered immediately messaged
- Feb 18, 2026 · Assembly
Received from Senate
- Feb 18, 2026 · Assembly
Referred to committee on Rules
- Feb 18, 2026 · Assembly
Made a special order of business at 11:28 AM on 2-19-2026 pursuant to Assembly Resolution 14
- Feb 19, 2026 · Assembly
Read a second time
- Feb 19, 2026 · Assembly
Ordered to a third reading
- Feb 19, 2026 · Assembly
Rules suspended
- Feb 19, 2026 · Assembly
Read a third time and concurred in
- Feb 19, 2026 · Assembly
Ordered immediately messaged
- Feb 23, 2026 · Senate
Received from Assembly concurred in
- Feb 25, 2026 · Senate
LRB correction (Senate Amendment 2)
- Feb 25, 2026 · Senate
Report correctly enrolled
- Mar 6, 2026 · Senate
Representative Brown added as a cosponsor
- Mar 12, 2026 · Senate
Presented to the Governor on 3-12-2026
- Mar 13, 2026 · Senate
Report approved by the Governor on 3-13-2026. 2025 Wisconsin Act 99
- Mar 13, 2026 · Senate
Published 3-14-2026
- Mar 19, 2026 · Senate
Representative Emerson added as a cosponsor
Terms on this page
Wisconsin Act
The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.
Official term: Act. More in the glossary
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis. More in the glossary
Author
A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.
Official term: Author, coauthor. More in the glossary
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor. More in the glossary
Roll call
A vote where each lawmaker's yes or no is recorded by name.
Official term: Roll call vote. More in the glossary
From the Wisconsin Legislature's official record, checked Sep 15, 2026. See the source
Wisconsin Act
The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.
Official term: Act
Legislative Reference Bureau
The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.
Official term: LRB analysis
Signed on in support
Lawmakers who back a bill without being one of its authors, often from the other chamber.
Official term: Cosponsor
Roll call
A vote where each lawmaker's yes or no is recorded by name.
Official term: Roll call vote