Montana Title 3. Judiciary, Courts § 3-15-901. Trial jury right in constitutional challenges--definition

(1) When a proceeding challenges the constitutionality or other illegality of a legislative act or a proposed or adopted ballot issue, as defined in 13-1-101, and that proceeding involves the determination of an issue of fact, any party to the proceeding is entitled to a trial by jury on a determination of an issue of fact that is in dispute.

(2) When a proceeding under this chapter challenges the constitutionality or other illegality of a legislative act or a proposed or adopted ballot issue, as defined in 13-1-101, and that proceeding involves the determination of an issue of fact, any party to the proceeding is entitled to a trial by jury on a determination of an issue of fact that is in dispute.