Brad Raffensperger defeated David Belle Isle Tuesday night to win the GOP nomination for secretary of state.
Georgians will choose a new secretary of state for the first time in eight years.
Raffensperger and Barrow are seeking to replace Brian Kemp, who defeated Lt. Gov. Casey Cagle in a runoff for the GOP governor's nomination.
Georgia may replace its electronic voting machines with a system that has a paper backup. Whoever wins the Nov. 6 election will oversee that system's implementation.
Belle Isle is a former Alpharetta mayor, while Raffensperger is a private businessman. Barrow is a former U.S. congressman from central Georgia.
(Full elections results below -- App users click here)