It's a cellphone-landline poll of random people in AZ. Probably the only ones that would answer a call like this are the old-timers in places like Sun City, Apache Junction etc. Not even registered voters and some may even be snowbirds who can't even vote in AZ. (Although I realize that makes no difference for Democrat voters).
But AZ is pretty much die-hard 2nd Amendment rights so when push comes to shove, and if McSally is smart (which is questionable), she should take advantage of prominent Anti-2A stance.