I think he's better than 18-62 approval, still Lean R.
There's a gap of 20% of 'don't know/no opinion' that usually gets filled in over time. I'm mpredicting that most of that gap goes sympathetic to Senator Flake. Here's the problem: even if most of the gap goes to the Republican nominee, Senator Flake must still cut into the segment of 62% disapproval. That is theoretically possible... but it is also tough. Elected officials have a tough time rebounding from bad situations that lead to unflattering polling even if such is not their fault. See the Republican wave election of 2010.