There’s not 500k ballots left
The report I saw on the local news here in Phoenix was that there are 500,000 ballots left to count with 400,000 of those in Maricopa County. That’s the county with Phoenix in it and is trending D.
They said the ballots were MAIL INS and were waiting to have the signatures on them verified.
I don’t know how they count mail in ballots when updating the areas still left to report, but I guess it’s possible there are so many out there.