Read previewDemocratic megadonor John Morgan has joined the camp of people pointing fingers at President Joe Biden's top aides for his poor debate performance. That group includes Biden's senior advisor, Anita Dunn; her husband, Bob Bauer, Biden's personal attorney; and Biden's former chief of staff, Ron Klain. This story is available exclusively to Business Insider subscribers. AdvertisementAnother longtime Democratic donor, Whitney Tilson, said in a Saturday post on X that he felt "deceived" by Biden's performance. Morgan and representatives for Biden didn't immediately respond to requests for comment from Business Insider sent outside regular business hours.

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