Former President Barack Obama will headline a campaign rally on Friday in Atlanta for Democrat Stacey Abrams, who's locked in a virtual tie in the Georgia gubernatorial race against Republican Brian Kemp.

Why it matters: The rally comes in the closing days of the hotly contested governor's contest, which could also have historical significance given Abrams has the chance to become the nation's first black female governor. Meanwhile, President Trump will campaign on Sunday for Kemp in Macon. The Cook Political Report rates the race as a “toss up.”