An Act to amend 907.02 (1) of the statutes; Relating to: admissibility of expert witness testimony.
Sponsored By: Dan Feyen (Republican), Howard Marklein (Republican), Van Wanggaard (Republican), Eric Wimberger (Republican)
Signed by Governor
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Bill Overview
Analyzed Economic Effects
1 provisions identified: 0 benefits, 0 costs, 1 mixed.
Stricter court checks on expert testimony
In Wisconsin courts, the party offering expert testimony must show that each reliability requirement is more likely than not met. The testimony must rest on enough facts or data and use reliable principles and methods. The expert’s opinion must also reflect a reliable application of those methods to the case’s facts. The law first applies to cases and special proceedings started on its effective date. The provided text does not give that date.
Sponsors & Cosponsors
Sponsors
Dan Feyen
Republican • Senate
Howard Marklein
Republican • Senate
Van Wanggaard
Republican • Senate
Eric Wimberger
Republican • Senate
Cosponsors
Brent Jacobson
Republican • House
Cindi Duchow
Republican • House
Rob Kreibich
Republican • House
Clint Moses
Republican • House
David Murphy
Republican • House
Jeffrey Mursau
Republican • House
Jerry O'Connor
Republican • House
William Penterman
Republican • House
Jim Piwowarczyk
Republican • House
Paul Tittl
Republican • House
Nancy VanderMeer
Republican • House
Robert Wittke
Republican • House
Roll Call Votes
No roll call votes available for this bill.
Actions Timeline
Published 3-7-2026
3/9/2026SenateReport approved by the Governor on 3-6-2026. 2025 Wisconsin Act 92
3/9/2026SenatePresented to the Governor on 3-5-2026
3/5/2026SenateReport correctly enrolled
1/28/2026SenateReceived from Assembly concurred in
1/22/2026SenateOrdered immediately messaged
1/22/2026HouseRead a third time and concurred in
1/22/2026HouseRules suspended
1/22/2026HouseOrdered to a third reading
1/22/2026HouseRead a second time
1/22/2026HouseRules suspended to withdraw from calendar and take up
1/22/2026HousePlaced on calendar 1-22-2026 by Committee on Rules
1/20/2026HouseRead first time and referred to committee on Rules
1/16/2026HouseReceived from Senate
11/19/2025HouseOrdered immediately messaged
11/18/2025SenateRead a third time and passed
11/18/2025SenateRules suspended to give bill its third reading
11/18/2025SenateOrdered to a third reading
11/18/2025SenateRead a second time
11/18/2025SenatePlaced on calendar 11-18-2025 pursuant to Senate Rule 18(1)
11/14/2025SenateAvailable for scheduling
11/12/2025SenateReport passage recommended by Committee on Judiciary and Public Safety, Ayes 8, Noes 0
11/12/2025SenateExecutive action taken
11/12/2025SenatePublic hearing held
10/22/2025SenateRead first time and referred to Committee on Judiciary and Public Safety
10/2/2025Senate
Bill Text
Bill Text
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