I have no hard data, and this is from 2017/2018, but it is very sketchy when the secretary of state, the office which oversees elections in GA, runs for governor, doesn't resign ahead of time, doesn't allow any investigations into the electronic voting systems, doesn't push forward any paper trail requirements, and subsequently wins the election for governor. Everything Kemp did and didn't do was suspect as it relates to elections.
I have zero faith in GA election results. And until the State moves off of these electronic systems and/or installs a paper trail, and brings a sense of integrity back into the election system, I will continue to feel the elections in GA are without integrity and potentially illegitimate, no matter who wins in any given election. This is outside of any political affiliation. This is the core of our country not being properly governed and protected.
EDIT>> After some research, it looks as if GA is getting a paper trail after a court order required the state to move off the previous electronic system. Now it looks like they're installing BMDs which can be verified by the voter prior to scanning to commit their vote. Of course, there are plenty of articles relating to how hackable BMDs are as well.