Minn. Stat. § 204D.11
Subd. 1. White ballot; rules.
CHARGE; RULES; REIMBURSEMENT.
The names of the candidates for all partisan offices voted on at the state general election shall be placed on a single ballot printed on white paper which shall be known as the "white ballot." This ballot shall be prepared by the county auditor subject to the rules of the secretary of state. The secretary of state shall adopt rules for preparation and time of delivery of the white ballot.
Subd. 2. Pink ballots.
Amendments to the state Constitution shall be placed on a ballot printed on pink paper which shall be known as the "pink ballot." The pink ballot shall be prepared by the county auditor, in the manner provided in the rules of the secretary of state.
Subd. 3. Canary ballot.
All questions and the names of all candidates for offices to be voted on at the state general election which are not placed on the white ballot shall be placed on a single ballot printed on canary paper which shall be known as the "canary ballot." The canary ballot shall be prepared by the county auditor in the manner provided in the rules of the secretary of state.
Subd. 4. Special federal white ballot.
Subd. 5. Ballot headings.
The white, pink, and special federal white ballot shall be headed with the words "State General Election Ballot." The canary ballot shall be headed with the words "County and Judicial Nonpartisan General Election Ballot."
Subd. 6. Gray ballot.
When the canary ballot would be longer than 30 inches or when it would not be possible to place all offices on a single ballot card, the judicial offices that should be placed on the canary ballot may be placed instead on a separate gray ballot. The gray ballot shall be prepared by the county auditor in the manner provided in the rules of the secretary of state. The gray ballot must be headed with the words: "Judicial Nonpartisan General Election Ballot." Separate ballot boxes must be provided for these gray ballots.