Wouldn't matter without Pennsylvania, it's still 276 EC votes even if she won AZ, but it's a border state and the border and economy are their top 2 issues, and abortion is now an issue for state races.
Looks like the secretary of state is trying to slip in illegals voting by requiring proof of citizenship for state races, but accepting a pinky promise to vote for president. They are at 40,000 people registered to vote with no proof of citizenship, and republicans have asked to SCOTUS to block them until they provide proof of citizenship, so we'll see what they decide. The state was decided by 10,000 votes last time, so 40,000 votes from people who didn't have to prove they're citizens could be significant.
Arizona Proof of Citizenship Requirement
A person who submits valid proof of citizenship with their voter registration form (and is otherwise an eligible registrant) is entitled to vote in all federal, state, and local elections in which they are eligible.
A.R.S. § 16-101.
A registrant who attests to being a citizen but fails to provide proof of citizenship and whose citizenship is not otherwise verified will be eligible to vote only in federal elections (known as being a "federal only" voter).
A "federal only" voter will become eligible to vote a "full ballot" in all federal, state, and local elections if they later provide valid proof of citizenship to the appropriate County Recorder's office.