The campaign heads into the final stretch with 12 days to go until Election Day.
The race for the White House is heading into the final stretch with most polls showing Vice President Kamala Harris and former President Donald Trump neck-and-neck in key states with less than two weeks to go.
As of Thursday evening, more than 30 million Americans cast an absentee ballot or voted early in person, according to the Election Lab at the University of Florida.
Roughly 13 million people voted early in person, the lab reported, and more than 17 million returned their ballot by mail.
With just 12 days left in the campaign, Harris on Thursday will do local media interviews in Georgia before a 8 p.m. ET rally with former President Barack Obama and concert with Bruce Springsteen.
Trump will be in Arizona for a rally at 5 p.m. ET before going to Nevada for a Las Vegas rally hosted by Turning Point Action at 10 p.m. ET.
Former President Donald Trump addressed a packed 13,000-seat arena in Duluth just outside of Atlanta on Wednesday, suggesting to supporters -- without evidence -- that vote counting might not be secure.
"Got to get out there and vote, but most importantly, just vote whichever way you want to do it," Trump said at the rally hosted by Turning Point USA.
"I've been one that says whichever way. Just get out and vote. Be a little careful. Make sure your vote gets counted. There are ways of doing that too."
Trump also again floated a conspiracy theory that Vice President Kamala Harris did not hold a public campaign event on Wednesday because she already knew the results of the coming election.
"Maybe she knows something we don't know," Trump said. "That's bad, right? Maybe she knows something we don't know."
"Does everybody understand that? Maybe," he added, to supportive responses in the crowd.
-ABC News' Lalee Ibssa, Soo Rin Kim and Kelsey Walsh
In a Wednesday social media post, former President Donald Trump suggested that Vice President Kamala Harris criticized him as a "fascist" because she is losing ground in the presidential race.
"She is a Threat to Democracy, and not fit to be President of the United States -- And her Polling so indicates!" Trump fired back at the vice president.
"Now she is increasingly raising her rhetoric, going so far as to call me Adolf Hitler," Trump added.
Trump did not mention why Hitler's name emerged. The New York Times reported this week that the former president allegedly praised Hitler, according to former White House chief of staff John Kelly.
-ABC News' Kelsey Walsh, Lalee Ibssa and Soo Rin Kim
During Wednesday's town hall, moderated by CNN's Anderson Cooper, Vice President Kamala Harris was asked point-blank if she believes former President Donald Trump is a fascist.
"Let me ask you tonight, do you think Donald Trump is a fascist?" Cooper said.
"Yes, I do. Yes, I do. And I also believe that the people who know him best on this subject should be trusted," Harris replied, referencing the recent statements made by John Kelly, Trump's former chief of staff.
