Having the entire (Red-dominated) county invalidated/disenfranchised may very well be the intent of this county's GOP officials.
This would set up a chance to yell, "See? They're doing it--your votes didn't count; they were stolen," etc. The rural Arizona dumbasses would never connect the dots that their votes weren't stolen but were squandered by GOP dead-enders perpetuating a fantasy, and would instead be looking to arm up and "take their country back" or whatever.
Probably better to treat the *cough* "voting irregularities" as if they were real, and insist on a very public, very transparent examination to identify and clear up such...followed by a very public and very transparent conclusion that there were none.
(And by "none," I really mean, isolated, here-and-there, mostly honest-mistake anomalies in insufficient numbers to have altered any outcomes.)
Also I'd be sure to very publicly broadcast the (likely) findings of GOP chicanery that WERE found, on a closer look.
None of this would convince the most Trumpified of the mouth-breather crowd, but to the extent that any true Republican moderates, or (gasp) genuine Independents even exist, this may make an impression on them.