There was an anomaly in the 2018 Georgia state election: The apparent dropping of 128,000 Black votes for lieutenant governor.
In most states, whenever there is a question about the results of elections, the problem can easily be solved by viewing the paper trail. Even electronic voting machines used across the country produce some form of a paper ballot.
Not in Georgia.
Georgia is one of five states that exclusively uses unauditable machines with no paper trail. The majority of Georgia’s machines are touch-screen voting systems. Not only are they old and out of date, they are cumbersome and easily hackable. For each election, Georgia’s voting machines are loaded with software that is controlled by the secretary of state’s office. At the end of the election, the voters have no way of verifying the results.
In 2017, after a security flaw was found in Georgia’s election servers, Coalition for Good Governance and other parties filed a lawsuit against Kemp and other Georgia entities on behalf of five Georgia voters. One of the most important goals of the lawsuit was to examine the data on the servers to see if they had been tampered with.
On July 7, 2017, according to court documents in the case, Curling v. Kemp (pdf), someone wiped the state’s election server clean.
Then they wiped the backup server.
This could possibly be explained by a mistake, rather than intentional election rigging. But we can't know. We can never know how voting actually went in any of those five states.