"I just want to say: Jesus don't like ugly ..." Black voters comprise about 30 percent of the electorate and whites 60 percent - figures similar to recent elections.
A motion for a temporary restraining order asks a judge to order Georgia's governor to appoint a replacement who is not affiliated with Kemp or his campaign.
Both candidates are being backed by big-name celebrities and political heavyweights: Kemp boasts the support of Heisman Trophy victor Herschel Walker, President Donald Trump and Vice President Mike Pence, while Abrams claims Oprah Winfrey and former President Barack Obama.
Kemp's charge on Sunday appeared to result from a report made to his office and the Federal Bureau of Investigation on Saturday by a Georgia businessman with an expertise in software, according to David Cross, a lawyer representing several Georgia voters who have sued the state over its decision not to use paper ballots.
In a statement on Sunday, Kemp's office said they had officially requested the FBI to investigate the matter.
Kemp has been previously criticized by his opponent for allegedly using his role as Secretary of State to suppress women and minority voters.
Abrams on Monday called him a "bald-faced liar" who cooked up the allegation to deflect attention from his record of incompetence as secretary of state presiding over an antiquated, vulnerability-laced elections system.
Kemp's team told NBC News that the gubernatorial candidate's card was blank and he had to get another one.
- The candidates vying to serve as Georgia's next governor have just hours left to secure the votes they need to win.
"Make things better here in Georgia", Obama urged a crowd of voters last week while endorsing Abrams at Morehouse College in Atlanta.
Edgardo Cortés, Virginia's former elections commissioner who is now an election security adviser for the Brennan Center for Justice, told the AJC that Sunday's announcement was "bizarre" and said the timing of it is "problematic". The official declined to say if the agency was investigating. As Secretary of State, Kemp has backed strict ID requirements.
Abrams blasts Kemp as "an architect of voter suppression" for the way he's opted to enforce federal and state election laws.
They range for rejecting certain absentee ballots, blocking approximately 53,000 voter registration forms and purging some 700,000 voters from the state's voting rolls-all targeting African-American voters. One would allow an attacker to inject malicious code into the voter registration site that could spy on visitors or steal or alter data.