Montana Petition Signature Requirements (2026)
How many signatures you need to qualify for the ballot in Montana, the 2026 petition filing windows, and how to validate your signatures against the Montana voter file.
Signature requirements by office
| Office | Minimum signatures | % of enrolled voters |
|---|---|---|
| State Senator, State Representative | — | 5% |
2026 petition deadlines
State Senator, State Representative
- Primary petition opens:
- January 8, 2026
- Primary petition deadline:
- March 9, 2026
- General petition opens:
- June 3, 2026
- General petition deadline:
- August 19, 2026
- Primary election:
- June 2, 2026
- General election:
- November 3, 2026
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Start validating freeMontana petition rules & details
Primary petition — signature rules
Major-party candidates: declaration + fee
Primary petition — deadline rules
Filing window January through second Monday in March
General petition — signature rules
Independent candidates: petition with 5% of total district vote in last election
General petition — deadline rules
Independent candidates file by Wednesday after primary
Frequently asked questions
How many signatures do I need to get on the ballot in Montana?
Montana signature requirements vary by office. State Senator, State Representative: 5% of enrolled voters. See the full table above for all offices.
What is the 2026 petition filing deadline in Montana?
For the 2026 cycle in Montana, the primary petition deadline is March 9, 2026, and the general petition deadline is August 19, 2026. Confirm exact dates for your office above and with your election authority.
Can I validate Montana petition signatures myself?
Yes. Petition Validator lets you upload petition pages and automatically matches each signer against the Montana voter file — checking registration, address, and duplicates in seconds per signature. You can start free, no paid Victory Waves account required.
How does signature validation work?
You upload images of your petition pages; our system transcribes each signature and matches the signer's name, address, and date against official voter registration data to confirm they're a registered voter in the correct jurisdiction.
Last updated for the 2026 cycle on May 27, 2026. Always confirm requirements and deadlines with your state or local election authority.