Abigail Disney expressed in a lengthy statement to the CNBC business news channel her intention "to stop any contributions to the party unless and until they replace Biden at the top of the ticket."
"This is realism, not disrespect. Biden is a good man and has served his country admirably, but the stakes are far too high," she said." If Biden does not step down, the Democrats will lose. Of that, I am absolutely certain. The consequences for the loss will be genuinely dire," CNBC quoted Abigail Disney as saying on Thursday.
Biden's performance at the debate against ex-US President Donald Trump last week rekindled talks among Democrats about replacing him as the presidential nominee. Biden, 81, is the oldest president in US history and has faced speculation about his physical condition and cognitive abilities.
The US presidential election is slated for November 2024. The main contenders expected on the ballot are Biden and Trump, who have both won enough delegates' votes to be their parties' presumptive nominees. Trump and Biden are set to debate again on September 10.