More than 1.5 million Georgians already have cast ballots.
"She is a phenomenal candidate and person and she can make history by becoming the first ever Black Women elected Governor in America", he wrote in an Instagram post. She attributed the racist attack to Kemp and President Donald Trump's rhetoric.
Taking into account the historical voting patterns and the representation of African Americans in USA politics, Abrams' campaign has drawn much public attention. "Well I'd like to remind Stacey and Oprah and Will Ferrell: I'm kind of a big deal, too".
She made a decision to lend her celebrity, she said, after watching how Abrams "handles" herself "in the midst of the onslaught of hate and vitriol".
What was notable was the extent to which he didn't bash Winfrey, who has a high favorability rating, but linked himself to her career.
Kemp did not address the robocalls at his only scheduled campaign stop on Saturday, at a Cuban restaurant in a north-Atlanta suburb.
Republicans in Georgia, including Kemp, have pushed for strict voter ID laws, citizenship checks and aggressive voter roll maintenance in the name of protecting elections against fraud and noncitizens voting.
Lewis said to supporters at the rally that they should tell everyone they know to go vote.
The pitches from Pence and Winfrey clearly fit Abrams' and Kemp's respective strategies.
The Kemp event was also hit by a number of protesters.
Two men protesting Kemp's immigration policy were forcibly removed.
Much of the final stretch of the race was consumed by a bitter battle over race and access to the polls. Vice President Mike Pence is also in Georgia Thursday campaigning for Republican candidate Brian Kemp.
The competing scenes - from the candidates, to the audiences, to the headliner guests - underscore the choice Georgia voters face Tuesday in one of the nation's premier midterm matchups.
It's not clear how many Georgia residents heard the racist robocall.
Amico said she is proud of running a positive campaign and of bringing new voters into the electorate. He called the controversy "manufactured".
A judge on Friday issued an injunction ordering the state to change its procedure to allow people flagged as noncitizens greater opportunity to prove their citizenship at the polls.