For information on the complaint procedure, the complaint form, and the confidentiality and disclosure policy, go to this link.

Updated: April 30, 2026

Carlson v. Accountability in State Government, COPP-2026-CFP-005

-Complaint

-Letter Accepting Complaint

-Letter Requesting Response from Accountability in State Government

-Response (Pending)

Final Agency Determination: Pending

Early v. Big Sky Fiscal Guardians, Treasure State Stewards, Conservatives4MT, and Montana Business Advocates for Sensible Elections, COPP-2026-CFP-004

-Complaint

-Letter Accepting Complaint as it pertains to Big Sky Fiscal Guardians, Treasure State Stewards, and Montana Business Advocates for Sensible Elections

-Letters requesting response from Big Sky Fiscal Guardians, Treasure State Stewards, and Montana Business Advocates for Sensible Elections 

-Responses (Pending)

Final Agency Determination: Pending

Gusler v. Barker, COPP-2026-CFP-003

-Complaint

-Letter Accepting Complaint

-Letter Requesting Response from Barker

-Response

Final Agency Determination: Pending

Zephyr v. Abbey Lee Cook, COPP-2025-CFP-003

-Complaint

-Letter Accepting Complaint

-Letter Requesting Response from Abbey Lee Cook

-Response (None yet provided)

Final Agency Determination: Pending

Neumann v. Abbey Lee Cook dba Abbey Lee Cook and Associates LLC, COPP-2025-CFP-002

-Complaint 

-Letter Accepting Complaint

-Letter Requesting Response from Abbey Lee Cook/Abbey Lee Cook and Associates LLC

-Response (None yet provided)

Final Agency Determination: Pending

For all Complaint DECISIONS, click here.

To see Orders of Noncompliance (ONC's) issued by COPP, click here.

Updated: August 13, 2021

For all Lobbying Complaint Decisions issued by COPP, click here.

Updated: July 20, 2023

For all Ethics Complaint Decisions issued by COPP, click here.

Updated: August 10, 2020

For all Declaratory Rulings issued by COPP, click here.