Montana Title 3. Judiciary, Courts § 3-1-803. Disqualification of judges--all courts

This section shall, in its application, apply to all courts listed in section 3-1-101 except a court of impeachment in the state senate.

Any justice, judge, justice of the peace, municipal court judge or city court judge must not sit or act in any action or proceeding:

1. To which he is a party, or in which he is interested.

2. When he is related to either party or any attorney or member of a firm of attorneys of record for a party by consanguinity or affinity within the third degree, computed according to the rules of law;

3. When he has been attorney or counsel in the action or proceeding for any party or when sitting in a case on appeal he as a judge in the lower court rendered or made the judgment, order, or decision appealed from.