Capitol Tracker

Exploring the data on Montana's 2021 legislative session

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GOP-held 67-33
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GOP-held 31-19
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Greg Gianforte (R)
Last updated 5:19 PM Apr 12, 2021

Sen. Shannon O'Brien

Representing SD 46
Missoula, East Missoula, Seeley Lake

2021 is the first session O'Brien has served in the Legislature.

SD 46 election results

Last in-cycle for Senate election in 2020. House seats are elected every two years, Senate seats every four.

General election vote, 2020

Won by 32% (4,066 votes)

Party primary vote, 2020

Won by 36% (1,875 votes)

Governor vote in district, 2020

(D) COONEY(R)(L)64%32%
Won by 32% (4,219 votes)

Voting statistics

Of 1,374 Senate floor votes involving bills:
69%With majority of Senate lawmakers
64%With majority of GOP caucus
97%With majority of Dem. caucus
O'Brien has been absent or excused for 0 votes.
Montana Free Press
Local journalists covering Montana for you.

Bills sponsored

SJ 20: Resolution raising awareness of post-traumatic stress injury
From Shannon O'Brien (D)Bill text
Probably Dead
SJ 24: Request interim study of traffic safety related to headlight design and use
First chamber
In committee
SB 311: Generally revise child care scholarship program laws
Probably Dead
SB 342: Generally revise laws related to preschool programs
Probably Dead
SB 343: Establish Montana TEC scholarship program to promote CTE
Probably Dead
SB 394: Revise capital gains and provide property tax relief
Probably Dead
SB 407: Establishing high-quality child care business development grants
Probably Dead
Showing 7 of 7

Committee assignments

  • Senate Education and Cultural Resources
  • Senate Taxation
  • Senate Agriculture, Livestock, and Irrigation

More information about this guide is available here. Reach data reporter Eric Dietrich with questions, comments or bug reports for this project at

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