can a registered dem vote in the repub primary?

[pr0crast]

Hi all, sorry if this has come up already in the forums...

I'm a democrat and I don't care whether Obama or Hillary get the nomination. Makes no difference to me. I DO care however who gets the republican nomination, and thus I want to be able to vote in that primary in my state (AZ). Is this allowed? Do I have to change my party affiliation to do so?

TIA