In 2010, the last time there was no incumbent running for governor, 45 percent of registered voters cast ballots. That rate dropped to 43 percent in 2014.
The turnout matches this year's early voting numbers.
About 2.1 million voters cast ballots early this year, a new high for a midterm election in Georgia. Early turnout more than doubled from the last midterm election in 2014, when about 954,000 people cast advance ballots.