Whoa if this is even kinda true. I only had Senate, SoS, and Superintendent as competitive, but if the Governor's race is too, then Arizona could be in for a big shakeup in 2018.
It could be the Democratic version of Wisconsin or Iowa, which both took sharp turns to the right in 2010.
It remains to be seen if Democrats will put up a serious challenger to Flake, and I don't think they'll pass up on the opportunity. Rep. Kyrsten Sinema seems to be waiting for a primary challenger to damage or defeat Flake.