He lacked the military record. He was obviously trying to be McStain, and it failed. Didn't help when his kiddo let 23 expensive dogs die in the kennel he was running. the Prosecutor dropped the 23 charges of animal abuse because Papa Jeffy pulled strings with the prosecutor and got the brat off the charges. That's when he announced his "retirement." I cheered.
Did you cheer because of the dogs or because he was a bad senator ?
At a distance, it appeared he simply didn't have a clear ideology.
He certainly didn't like Trump.
I didn't watch him that close, but I have felt that AZ GOP has been somewhat screwed up when it comes to putting forth good candidates.
As I am going to get more focused on this, I'll watch more closely.