Several important contests are underway, including the governor's race and the Senate seat race.
The candidates have pledged to make overhauling Georgia's child welfare system a top priority.
State lawmakers are sounding the alarm, warning that the foster care system has been pushed to its breaking point.
Democrats need a net gain of 10 seats to reach 91 of 180 and take control of the chamber for the first time since 2004.
More than 40 trained bilingual volunteers are fanning out across polling sites in Gwinnett, DeKalb and Clayton counties to assist voters.