Winfrey will be the featured celebrity guest at the event in Arlington, Va.
“This event with Oprah is another big momentum boost for our campaign,” Chatman said in a statement. “To win a race like this, you need a lot of support and a strong grass roots effort. Our campaign is off to a tremendous start. We have inspired new volunteers and re-engaged many voters.”
Chatman, former president and CEO of the Northern Virginia Urban League, is in a crowded field of Democrats vying for the nomination to succeed Rep. Jim Moran (D-Va.), who is retiring.
Her campaign said the event theme will be “Empowering our Women and Girls for Leadership.”
“Oprah is a good friend and we both share a passion for empowering women and girls for leadership,” Chatman said.
Winfrey’s endorsement of Barack Obama in 2007 was credited with giving him a fund-raising and organizing boost, as she hosted an event for him at her Montecito, Calif., home and made multiple appearances for him on the campaign trail. Nevertheless, it was a risk for her to get involved in partisan politics, particularly as he was engaged in a tense campaign for the nomination against Hillary Clinton. She took a less active role in the 2012 cycle.
Meanwhile, Democratic candidates have been aggressively courting Hollywood donors for what looks like a volatile midterm campaign, as the party tries to hold on to the Senate and make gains in the House. Sen. Ed Markey (D-Mass.) is scheduled to appear at a fundraiser on Wednesday at the home of Tennis Channel CEO Ken Solomon. Also scheduled for upcoming Los Angeles events are Sen. Tim Kaine (D-Va.), raising money for the Common Ground PAC, and Sen. John Walsh (D-Montana), who is seeking a full term after he was appointed to succeed Max Baucus.