Judges in Montana are primarily chosen through non-partisan elections. The Supreme, District, City and Justice Court judges are elected in this way. Midterm vacancies are filled by gubernatorial appointment from a list compiled by a nominating commission. Appointments are subject to approval by the state Senate.
The two courts that do not use non-partisan elections are the Workers' Compensation Court and the Water Court. Judges for the Worker's Compensation Court are appointed by the Governor from the suggestions of a nomination commission. Judges of the Water Court are elected by a vote of district court judges.