 They're blaming the debate practice that they didn't practice on how to go more on the attack. It was bogged down by defending his record rather than outlining a vision for a second term and that he was overworked and not well rested. They're blaming Anita Dunn, his senior advisor, her husband, who played Trump during the rehearsals, and Ron Klain, the former chief of staff who led the debate prep. Politico says that Biden does not want to end his political career getting crushed by Trump in a debate.