A New York Times report identified Abrams as a participant in a burning of the Georgia flag while she was a college student in 1992 during a protest over a prominent Confederate symbol which was then part of the flag's design.
The Republican Governors Association slammed Abrams for her criticism of the free market, saying she's "too extreme for Georgia".
Just 30 or so people attended the 1992 protest on the steps of Georgia's state Capitol: a smattering of student activists, but mostly reporters and a few Georgia Bureau of Investigation agents, snapping photos of demonstrators lighting a state flag on fire.
Abrams repeatedly emphasized her plan to expand Medicaid in Georgia, calling it a "bipartisan solution" that Vice President Mike Pence embraced when he was Indiana's Republican governor.
"During Stacey Abrams' college years, Georgia was at a crossroads, struggling with how to overcome racially divisive issues, including symbols of the Confederacy, the sharpest of which was the inclusion of the Confederate emblem in the Georgia state flag", the statement continued.
Zell Miller was mounting an unpopular campaign to strip the Confederate emblem from the state's flag - an initiative that ultimately resulted in him losing his subsequent re-election bid.
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After tracing her youth in the state's public schools and recalling her time at Spelman College in Atlanta, Abrams spoke about her role in the demonstration decades ago.
Significantly, Kemp's gubernatorial rival Abrams would be the state's first-ever black governor if elected.
After the white nationalist rallies in Charlottesville, Virginia, in August 2017, Abrams advocated for the removal of a massive cliff-side carving on Stone Mountain near Atlanta, the largest Confederate monument anywhere.
Abrams said Kemp's record as secretary of state "causes great concern" and pointed to the release of voter data under Kemp's watch and the state's "exact match" voter registration system, which has left tens of thousands of voter registrations "pending" due to inconsistencies.
Abrams' criticism of the free market echoes her previous claim about not needing "Conservative values to win in Georgia'".
Kemp said that his concern stemmed from the millions of dollars that Abrams has put into a get-out-the-vote campaign that has shown success in the state despite Kemp's actions to limit the number of voters eligible to show at the polls in November.
Similar arguments may resurface Tuesday night, when Kemp and Abrams square off in the first gubernatorial debate, two weeks before the election.