Hope Arizona does not allow Democrat cross-over voting in Republican primaries.
They allow independents to vote in the Republican primary. Independents are the biggest voting block at 36%. A lot of them are Democrats and vote in Repub primaries to block any conservative from winning a primary. That is how McCain survived so long.
The Arizona primary is Open to Party and Unaffiliated Voters.
Registered members can’t cross over to other party’s primaries.