Chrissy Teigen and Patton Oswalt are also among the celebrities who've taken to social media to express their frustrations.
Jennifer Hudson, Common, Billy Porter and The Chicks will also perform during the four-day event.
The actress was a guest on Debra Messing and Mandana Dayani's podcast, 'The Dissenters.'
Kamala Harris will become the first woman of color to appear on a major party ticket.
Joe Biden picked Harris as his running mate on Tuesday.
After Biden announced his pick on Tuesday, celebs immediately took to Twitter to share their opinion on the selection.
The presumptive Democratic nominee revealed his VP pick on Tuesday.
'I know what it's like to have a voice, and also what it's like to feel voiceless,' the Duchess of Sussex says.
The party said in a statement that it's scrapping plans for anyone to speak from the Wisconsin city.
The 43-year-old rapper announced he was running for office in a tweet posted on July 4.
The ‘This Close’ co-creator and star is co-hosting a Rock the Vote event as the American With Disabilities Act turns 30.
Lionel Richie, Sia and Sheryl Crow also signed the open letter.
The sitcom stars shared posts on social media in honor of the 100-day mark before this year's presidential election.
The source says that Kanye's wife, Kim Kardashian West, 'will always support' him even if she doesn't always agree with him.
