Former House Speaker Nancy Pelosi privately told President Joe Biden in a recent conversation that polling shows that the president cannot defeat Donald Trump and that Biden could destroy Democrats’ chances of winning the House in November if he continues seeking a second term, according to four sources briefed on the call.
Controlled leaks from Pelosi’s team would be my guess. Clearly she didn’t want the conversation to stay private.
Edit: Nevermind the other commenter already said this.