Marsha Appling-Nunez was showing the college students she teaches how to check online if they're registered to vote when she made a troubling discovery. Despite being an active Georgia voter who had cast ballots in recent elections, she was no longer registered. She tried re-registering, but with about one month left before a November election ... Appling-Nunez's application is one of over 53,000 sitting on hold with Georgia Secretary of State Brian Kemp's office. Kemp, who's also the Republican candidate for governor, is in charge of elections and voter registration in Georgia. His Democratic opponent, former state Rep. Stacey Abrams, and voting rights advocacy groups charge that Kemp is systematically using his office to suppress votes and tilt the election, and that his policies disproportionately affect black and minority voters. Through a process that Kemp calls voter roll maintenance and his opponents call voter roll purges, Kemp's office has cancelled over 1.4 million voter registrations since 2012. Nearly 670,000 registrations were cancelled in 2017 alone. According to records obtained from Kemp's office through a public records request, Appling-Nunez's application - like many of the 53,000 registrations on hold with Kemp's office - was flagged because it ran afoul of the state's exact match" verification process. An analysis of the records obtained by The Associated Press reveals racial disparity in the process. Georgia's population is approximately 32 percent black, according to the U.S. Census, but the list of voter registrations on hold with Kemp's office is nearly 70 percent black.