How to Run for Office in Montana
Getting on the Ballot
Montana candidates file a Declaration for Nomination and Oath of Candidacy during a window set by statute - opening 145 days and closing at 5 p.m. 85 days before the June primary, which lands the window in mid-February through early March. Statewide and state-district candidates (including the legislature) file with the Secretary of State, and the SOS accepts fully electronic filings through its online candidate portal; a declaration filed any other way must be acknowledged before a notary or the filing office.
The declaration carries an oath that you possess (or will possess by the constitutional deadline) the qualifications for the office, plus a modest filing fee scaled to the office, with an indigency alternative for candidates who can't pay. There's no petition requirement for major-party primary candidates - Montana's barrier is the calendar, not signatures.
The separate, easy-to-miss obligation is the Commissioner of Political Practices (COPP): Montana law defines you as a "candidate" the moment you file or start soliciting, receiving, or spending money - whichever comes first - and within five days of that you must file a C-1/C-1A Statement of Candidate with the COPP and register in its electronic reporting system.
Where Local Candidates File
County offices, municipal offices, and single-county districts file with the county election administrator, and school trustees file with the school district clerk on an earlier window keyed to the May school election - Montana splits its local calendar in a way that surprises school-board candidates who assume they share the June primary.
Campaign finance for every level runs through the COPP's CERS system (Campaign Electronic Reporting System) at politicalpractices.mt.gov; county and school candidates can elect a simplified "B" reporting status if total campaign activity stays under $500, or full "C" reporting above it.
Worth Knowing
- The COPP clock can start before you file for office - announcing and spending money triggers the five-day C-1 deadline even if your SOS filing is weeks away.
- Montana's campaign finance regulator is a single commissioner, not a board - the COPP is a nonpartisan office that also handles ethics and lobbying, and publishes plain-language candidate guides.
- School trustees run in May, not June or November - different window, different filing officer (the district clerk).
- The SOS's online filing portal covers the declaration and fee end to end for state-filed offices.
Official Montana Resources
Filing deadlines, fees, and signature requirements change from cycle to cycle. Always confirm current details with the official sources below.
This page was last reviewed on August 4, 2026. Process details above are believed current as of that date; deadlines and fees should always be verified with your election office.