WaPo:

Multiple problems plagued voters as they went to the polls yesterday in Georgia’s primary, from hours-long lines, technical disasters and absentee ballots that never arrived.

They’re another ominous sign for states and the general election officials trying to run a safe and trustworthy elections this year, though Georgia’s issues were known for some time and are more unique. In fact, the problems in Georgia were especially galling because the seeds of the failure were evident for months to technologists — since long before the novel coronavirus pandemic arrived and multiplied the obstacles facing election officials. 

They included an overly complex voting system designed to improve security but may have compromised it, a rushed time frame to implement that system and a training program for poll workers that wasn’t up to the task, especially after a slew of new workers replaced elderly people more vulnerable to covid-19.