Montana Code 13-1-111. Qualifications of voter

13-1-111. Qualifications of voter. (1) A person may not vote at elections unless the person is:

Person: means an individual, corporation, association, firm, partnership, cooperative, committee, including a political committee, club, union, or other organization or group of individuals or a candidate as defined in subsection (8). See Montana Code 13-1-101
State: when applied to the different parts of the United States, includes the District of Columbia and the territories. See Montana Code 1-1-201
United States: includes the District of Columbia and the territories. See Montana Code 1-1-201

(a)registered as required by law;

(b)18 years of age or older;

(c)a resident of the state of Montana and of the county in which the person offers to vote for at least 30 days, except as provided in 13-2-514; and

(d)a citizen of the United States.

(2)A person convicted of a felony does not have the right to vote while the person is serving a sentence in a penal institution.

(3)A person adjudicated to be of unsound mind does not have the right to vote unless the person has been restored to capacity as provided by law.