Sen. Forrest Mandeville

Second-session Republican from Columbus

Representing Senate District 28

Red Lodge, Columbus

406-690-1933 • forrest.mandeville@legmt.gov

Committees •Bills •Key votes •Voting stats •2024 election margin •

Mandeville previously served in the Montana Senate in 2023.

Montana Free Press coverage

Nothing currently tagged in our archive.

Committee assignments

Senate Finance and Claims

Senate Education and Cultural Resources

Senate Local Government - Chair 🪑

Senate Rules - Vice-chair

Joint Appropriations Section A — General Government - Vice-chair

Bills sponsored

📋 SB 10: Extending onsite inspection timelines during state of emergency Forrest Mandeville (R)📃 Bill text	✅1st Cmte. ✅Senate ✅House ✴️Gov.
📋 SB 11: Revise local government ballot issue laws Forrest Mandeville (R)📃 Bill text 💵 Fiscal note	✅1st Cmte. ✅Senate ✅House ✅Reconcil. ✴️Gov.
📋 SR 48: Confirm governor's appointee for board of real estate appraisers Forrest Mandeville (R)📃 Bill text	✅1st Cmte. ✅Senate
📋 SR 91: Confirm governor's appointees for the board of housing Forrest Mandeville (R)📃 Bill text	✅1st Cmte. ✅Senate
📋 SB 121: Revise the land use and planning act Forrest Mandeville (R)📃 Bill text	✅1st Cmte. ✅Senate ✅House ✴️Reconcil. ⚪️Gov.
📋 SB 122: Revising the actuarially determined employer contribution rate and setting a minimum contribution rate Forrest Mandeville (R)📃 Bill text 💵 Fiscal note	❌1st Cmte. ⚪️Senate ⚪️House ⚪️Gov.
📋 SB 123: Allowing emergency permitting authority during an emergency Forrest Mandeville (R)📃 Bill text	❌1st Cmte. ⚪️Senate ⚪️House ⚪️Gov.
📋 SB 141: Providing that the default retirement plan for legislators is the defined contribution plan through PERS Forrest Mandeville (R)📃 Bill text 💵 Fiscal note	❌1st Cmte. ⚪️Senate ⚪️House ⚪️Gov.
📋 SB 142: Revise laws related to election administrator compensation Forrest Mandeville (R)📃 Bill text	❌1st Cmte. ⚪️Senate ⚪️House ⚪️Gov.
📋 SB 174: Providing that recreational vehicles and mobile homes are reviewed as buildings for rent or lease Forrest Mandeville (R)📃 Bill text	✅1st Cmte. ✅Senate ✅House ✴️Reconcil. ⚪️Gov.

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Floor vote statistics

Calculations based on 1,930 Senate floor votes in 2025 involving bills.

🥇 80%

of votes cast on winning side

Average for Senate Republicans is 86%.

🔴 88%

of votes cast on side taken by most Republicans

Average for Senate Republicans is 89%.

🔵 62%

of votes cast on side taken by most Democrats

Average for Senate Republicans is 69%.

Mandeville has been marked absent or excused for 11 votes. Average for Senate lawmakers is 21.0.

SD 28 election results

Last in-cycle for Senate election in 2022. House seats are elected every two years, Senate seats every four.

General election vote, 2022

Ran unopposed

Party primary vote, 2022

Ran unopposed

Governor vote in district, 2024

Won by 47% (6,780 votes)

Senators elected in 2022 were assigned new districts during the 2023 redistricting cycle.

About the 2025 Montana Free Press Capitol Tracker

This guide is an effort to make the quantifiable aspects of the Montana Legislature more accessible to the public by compiling information about lawmakers, proposed bills and the legislative process. This is a project of Montana Free Press, a 501(c)(3) nonprofit newsroom that aims to provide Montanans with in-depth, nonpartisan news coverage.

The information presented here is collected from a variety of sources including the Montana Legislature's public roster and its official bill-tracking system. Reporting and web design were done by Jacob Olness and Eric Dietrich. Please contact them at jolness@montanafreepress.org and edietrich@montanafreepress.org with bug reports, questions or suggestions.

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2025 Capitol Tracker

The lawmakers, bills and votes of the 69th Montana Legislature