Yawn. McSally is going to win and it should've been predictable all along honestly. Sinema is too moderate to pump up the liberal base and there's just no way that 'moderate' suburbanite Republicans are going to vote for a pho-Republican instead of the real deal.
McSally 52-47 in the end. You heard it here first.
This sounds more like what you want to happen than an actual prediction. Sinema is from most populated part of the state and McSally is not. Almost every statewide official for the last few cycles has been from Maricopa County which means that Sinema is well positioned. Besides, +1 for a Republican in Arizona is quite shaky and will likely not hold up in come November, let alone expand into a 5% margin. This race probably will be decided by a plurality.