Montana SenateSB 437
Revise definition of sex in Montana law
Passed 32–18Party-line
What it does: On the version voted Apr 11, 2025: Defines sex in state law by reproductive anatomy as male or female only, defines male, female, man, woman, father and mother on that basis, and says "gender" used alone is a synonym for sex rather than gender identity. (AI-written summary of the bill; the official record shows the exact version voted)
Question before the chamber: Do Pass As Amended
The tally
Yes 32 · No 18 · Not voting 0
Bar: green = yes, brown = no, striped = not voting.
| Party | Yes | No | Not voting |
|---|---|---|---|
| Democrats | 0 | 18 | 0 |
| Republicans | 32 | 0 | 0 |
Most Democrats voted no; most Republicans voted yes.
The full roll (50)
Yes 32
- Barry UsherR19
- Becky BeardR38
- Bob PhalenR17
- Butch GillespieR9
- Carl GlimmR3
- Daniel EmrichR11
- Daniel ZolnikovR22
- Denley LogeR45
- Dennis LenzR25
- Forrest MandevilleR28
- Gayle LammersR21
- Greg HertzR7
- Gregg HunterR15
- Jason EllsworthR43
- Jeremy TrebasR10
- John EspR29
- John FullerR4
- Josh KassmierR13
- Ken BognerR18
- Mark NolandR6
- Matt RegierR5
- Mike CuffeR1
- Mike YakawichR24
- Russel TempelR14
- Shelley VanceR34
- Sue VintonR20
- Theresa ManzellaR44
- Tom McGillvrayR26
- Tony TezakR35
- Vince RicciR27
- Wendy McKameyR12
- Wylie GaltR39
“Not voting” is a recorded non-vote, not a reason for the absence. Parties come from public rosters; how we count.