Is AZ closed primary or open primary?
Under FAQs on the Arizona Secretary of State site, it says:
"An independent voter on the early voter list will receive a post card in the mail asking for the voter to choose which party ballot the voter wishes to receive for the Primary Election. If the independent voter goes to the polls on Election Day the voter will be given the option to choose a party ballot at that time."
I assume it means that a registered D can only get a D ballot in the primary, a registered R can only get an R ballot, and so on; but any other voter not registered as a member of any party can get any party's ballot they ask for.