A former spokeswoman for Hillary Clinton has said she "hopes he dies" after learning that Donald Trump had contracted Covid-19.
In a now-deleted tweet, Zara Rahim said: "It's been against my moral identity to tweet this for the last four years, but I hope he dies."
In another tweet that remains live on the website, Ms Rahim posted a selfie of her smiling with the caption "this f***ing rules".
Ms Rahim worked in the White House under the Obama administration before becoming a spokeswoman for Hillary Clinton.
She has also worked as director of communications for Vogue magazine and lobbied for Uber in the United States.
In a reply to another tweeter, which has not been deleted, she said: “No, we wait for D E A T H”.
I guess she tried to delete the tweet. pic.twitter.com/Pa65JhkZCe
— Joe Akana for Congress Hawaii 2020 (@Joe_Akana) October 2, 2020
Her tweets came on Friday morning and left-leaning figures apparently revelled in the news that the President of the United States and his wife Melania have coronavirus.
Dominic West, the Bafta-award winning actor star of The Wire and The Affair, said he "jumped for joy" when he heard of Mr Trump's diagnosis, adding: "what goes around comes around."
“I did slightly leap in the air with joy," he told Good Morning Britain.
Asked to clarify his comments, Mr West added: "Well there's an element of schadenfreude I suppose.”
"I'm not a fan of his, as you can probably tell, and I just hope Biden stays healthy and gets the presidency as quickly as possible."
Mr Trump’s diagnosis has raised questions about how the last weeks of the presidential campaign will play out in the United States.
The President must now isolate for two weeks and will not be able to attend campaign events.
Questions have already been raised over the presidential debate which took place on Tuesday, where Mr Trump was on stage with Joe Biden, the Democratic nominee.