Each election administrator shall provide the official ballots for every election conducted by the election administrator. A ballot other than an official ballot may not be cast or counted in any election.
Mont. Code Ann. § 13-12-212
Election administrator to provide official ballots -- other ballots prohibited
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.