That’s an issue everywhere, not just in AZ, but other candidates figure out a way to win, in AZ all major Republicans lost and there has to be other reasons.
The biggest issues with Republicans is fighting each other and not being single minded about defeating Democrats.
How many Democrats do you think believe Biden is mentally gone and should not be anywhere near POTUS, probably more than you think, but virtually none of them step out and say so, conversely Republicans routinely tear each other down even when they mostly agree with each other on policy.
The McCain Republicans are Assistant Democrats.
How soon we forget that Juan McLame gave cover to his fellow Democrats in the Keating Five scandal...
The McCainiacs don't care if they give up some US Senate seats or the governorship for a while - just as long as they can get rid of MAGA and get back to the good old days of milking the Uniparty System for their own benefit.