Voting in Primary Elections | League of Women Voters of Michigan
https://lwvmi.org/voting-in-primary-elections/
FAQs: Voting in Primary Elections
CAN I VOTE IN THE PRIMARY ELECTION IF I AM NOT A REGISTERED DEMOCRAT OR REPUBLICAN?
YES. You do NOT have to register as a member of any party to vote in a Michigan Primary. We have an “Open” Primary. Any registered voter can vote in a Primary.
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