March 10, 2020, Presidential Primary
Michigan Election Law has designated the Presidential Primary as a closed primary; this is the only closed primary election.
Voters in a closed primary must state the party primary they wish to participate in before receiving a ballot. The ballot given to voters only shows the party that corresponds to their choice.
Voters in an open primary receive a ballot with a column listing each qualified party's candidates. Voters then decide which party primary they wish to participate in by voting only in the column of their party choice while in the privacy of the voting station. Voting for candidates in more than a single party's column will void the entire partisan ballot.