SM Entertainment confirmed the singer's departure in a statement.
"I see her as sort of my musical and songwriting granddaughter," King said of Swift.
"It’s a powerful reminder of what can happen when young girls are able to see themselves in the person who holds the highest office in the land," she wrote.
The first of a series of Zoom calls will take place on Tuesday night (Aug. 27) at 7 p.m. ET.
The Parks and Recreation star also encouraged fans to donate to the Harris-Walz campaign.
Kanye West, Jason Aldean and Kid Rock are just some of the stars backing the former president.
"We never put out anything about Beyoncé," says producer Ricky Kirshner.
“We have a license to play the song,” campaign spokesperson Steven Cheung wrote in an email after the band claimed it was "not asked permission" for the use.
The singer was signed to Bad Boy Records in the 1990s, though her album with the company was never released.
Riffing on a Funny Girl classic, the comedian takes aim at Donald Trump's embattled VP pick.