Rapper Megan thee Stallion will give a special performance at Vice President Kamala Harris' rally in Atlanta, Georgia, on Tuesday, a source familiar confirmed to ABC News.

In addition to Megan thee Stallion, Georgia Sens. Jon Ossoff and Raphael Warnock and former Rep. Stacey Abrams will be in attendance, supporting Harris' 2024 presidential bid.

The news was first reported by Billboard.

-ABC News' Gabriella Abdul-hakim

Democratic long-shot nominee Marianne Williamson has suspended her campaign for president, announcing on X Monday that it is "time to let go" of her bid for the White House.

Williamson said she failed to register for the Democratic National Convention's candidate directory by Saturday evening's deadline.

"We did everything possible to stand for a blitz primary, an open convention and so forth. Yet the way things worked there truly was no way, and all we could have done is create noise," she said on X.

"I was in the race to create fundamental change, yes -- but not as a chaos agent. Things being what they are -- including the fact that defeating Donald Trump has always been and continues to be the goal that most matters -- it was time to let go," she continued.

Williamson, notably, did not endorse Harris in her statement, directing supporters to "do whatever is in your heart." Though she implied she will not be voting for Trump.

"For myself, the more I read about former President Trump's proposed policies, the more I hear his words and ponder them in my heart, the more I believe our most urgent task now is to make sure he does not return to the White House," she said. "That conviction is what will determine my vote on election day."

This is technically Williamson's second time suspending her campaign; she initially closed down shop after her less-than-ideal placements in the New Hampshire and Nevada primaries in February, but threw her hat back into the ring after the urging of her supporters.

-ABC News' Brittany Shepherd

Vice President Kamala Harris will be at ABC News' Sept. 10 debate with or without former President Donald Trump, her campaign communications director said Monday.

"As Vice President Harris said last week, the American people deserve to hear from the two candidates running for the highest office in the land and she will do that at September's ABC debate," her campaign communications director, Michael Tyler, said in a statement first reported by the Hill. "If Donald Trump and his team are saying anything other than 'we'll see you there' -- and it appears that they are -- it's a convenient, but expected backtrack from Team Trump. Vice President Harris will be there on September 10th -- we'll see if Trump shows.”

While Harris has previously affirmed her intention to be at the debate, this statement takes it a step further by saying she'll show up regardless of Trump's presence.

Trump accepted the debate when Biden was still the presumptive Democratic nominee, though his campaign has since said they're waiting until there is an official Democratic nominee before agreeing to debates.

-ABC News' Gabriella Abdul-Hakim, Fritz Farrow, Isabella Murray and Will McDuffie

Content about the election on social media "could be propaganda" for foreign adversaries, officials with the Office of the Director of National Intelligence warned on Monday.

"The American public should know that content that they read online, especially on social media, could be foreign propaganda, even if it appears to be coming from fellow Americans or originating in the United States," an ODNI official said on a conference call with reporters on Monday. "In short, foreign influence actors are getting better at hiding their hand and using Americans to do it."

Russia is still pervasive in this space and remains the biggest threat to the election, according to the officials.

The officials also warned that the influence operators will use the assassination attempt against former President Donald Trump "as part of their narratives portraying the event to fit their broad goals."

-ABC News' Luke Barr