More than 4 million customers lost power across the South on Friday in the wake of Hurricane Helene, and on Sunday, more than 2 million are still without power.

More than 900,000 are without power in South Carolina and 600,000 customers are in the dark in Georgia.

Over 200,000 are without power in Florida, another 500,000 customers are without power in North Carolina and more than 100,000 are in the dark in Virginia.

At least 64 people have died from Hurricane Helene, according to The Associated Press. Fatalities were confirmed in Florida, Georgia, South Carolina, North Carolina and Virginia.

In Georgia, the victims killed include Leon Davis, an assistant fire chief from Blackshear, who died when a tree fell on his car while he was responding to a call, officials said. Also killed in Georgia was a 27-year-old mother and her 1-month-old twin boys, who died when a tree fell on their home in Washington County, officials said.

In Florida, the deaths included a driver struck by a fallen sign while traveling on Interstate 4 near Tampa, Gov. Ron DeSantis said.

At least 17 were killed in South Carolina, including two firefighters in Saluda County, Gov. Henry McMaster said.

In North Carolina, the victims include a man who drove his truck on a flooded road, the governor said.

North Carolina Governor Roy Cooper announced Saturday evening that 10 people have died due to Hurricane Helene.

"The catastrophic devastation to western North Carolina is like nothing we have ever seen," Cooper said in a statement. "Emergency responders are working around the clock coordinating rescues and getting resources to help people with their immediate needs as they work to save lives."

Since Thursday, over 200 people have been rescued through water and helicopter rescues in the state.

-ABC News' Victoria Arancio

Vice President Kamala Harris released a statement Saturday evening expressing her condolences to the communities devastated by the storm and vowing to help them rebuild.

"My heart goes out to everyone impacted by the devastation unleashed by Hurricane Helene," she said.

Harris stressed that the administration is in constant contact with local officials and sending necessary supplies and resources.

"Federal personnel are on the ground to support families that have been impacted so that critical resources like food, water, and generators are available," she said.

-ABC News' Michelle Stoddart