The crazy thing is that this poll is giving Perdue a 49/31 approval rate. How can he be so popular in a such D friendly poll ?
I think there are tons of suburbanites, particularly women, in Georgia who aren't all that ideological (but at least tend to be moving meaningfully to the left of the modern Republican party on cultural issues) and are fine with a "generic" Republican who doesn't make too many waves (at least that they are aware of) but absolutely hate Trump and his perceived boorishness/stupidity and will almost certainly vote against him or stay home in 2020. The gap between the presidential horserace and Purdue's approval probably isn't quite this wide in reality, but as someone who grew up in the Atlanta suburbs it's not crazy to me that there'd be a big one.