ATLANTA — The Latest on campaign responses to an election-eve report of a vulnerability in Georgia's online voter system (all times local):

10:18 a.m.

The Republican candidate for Georgia governor has alleged with little evidence that Democrats sought to hack a voter database that will be used in Tuesday's elections.

Republican nominee Brian Kemp made the allegation just as reports emerged of a gaping vulnerability in a system that he controls as secretary of state. Democrat Stacey Abrams says she believes her opponent "cooked up the charge, because he realizes, once again, he left the personal information of six million voters vulnerable.

Kemp is not only running Georgia's elections, he's also the Republican candidate for governor, and in response to reports of the flaw, he's accusing Democrats of trying to hack the system.

Abrams appeared on ABC's "Good Morning America" Monday. The program said it gave Kemp an opportunity to appear, but he declined.

Polls suggest Kemp and Abrams are locked in a tight race in a contest that has taken on historic significance because of the potential of Abrams becoming the nation's first black female governor.

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00:27 a.m.

Georgia's online voter database morphed into a last-minute curveball in one of the nation's hottest governor's races, with Republican nominee Brian Kemp making a hacking allegation against Democrats just as reports emerged of a gaping vulnerability in a system that Kemp controls as secretary of state.

Kemp's office did not detail any Democratic acts, offering no evidence for Sunday's unusual action that effectively means the state's chief elections officer began a probe of his partisan opposition days before an election.

Polls suggest Kemp and Democrat Stacey Abrams are locked in a tight race that even before Sunday had evolved into a bitter back-and-forth over voting rights and ballot security.

The state Democratic Party called Kemp's accusation "a reckless and unethical ploy" and said he was using the FBI to support "false accusations."