Regarding AZ-8, I fully expect if Graf is the nominee, Kolbe will pull out all the stops to sabotage him and help the rodent. However, this might very well end up something similar to NJ-5, where Marge Roukema detested the man that would succeed her (and just like Scott Garrett, Randy Graf tried to take down Kolbe earlier), and she gave silent endorsement to the Socialist 'Rat trying to succeed her.
Garret's district has a considerably more GOP lean than AZ-8, and he ran against a flawed Dem opponent.