Mont. Code Ann. § 7-2-2705

7-2-2705 . Petition to amend proposed consolidation. (1) At any time prior to 5 days before the date fixed for consideration and final action on the petition, 50% of the registered electors residing within a particular part or portion of the county may file with the county clerk of the county a petition in writing, signed by them, asking that the part or portion of the county within which the petitioners reside not be attached to the county designated in the petition for abandonment but be attached to some other adjoining county. A person, after signing the petition, may withdraw the person's signature or name from the petition in the same manner as provided in 7-2-2604 (4).

(2) The petition authorized by subsection (1) must definitely, particularly, and accurately describe the boundaries of the part or portion of the county that the petitioners desire to be attached to the other adjoining county and must specify and name the other adjoining county to which the part or portion is to be attached if the county is abandoned and abolished.

(3) Separate and independent petitions may be filed by registered electors residing within the boundaries of separate and distinct and different parts or portions of the county, asking that, if the county is abandoned, the territory embraced within the boundaries described in the petition be attached to and become parts of the same or different adjoining counties other than the county named and designated in the petition for abandonment.