 As conversations continue to swirl in the Democratic Party on President Biden's viability as a candidate, the president addressing this week's lackluster debate performance, ABC's Mary Ellis Parks outside the White House with more. At a fundraiser overnight, President Biden acknowledged the debate, said, I understand the concern. I didn't have a great night, but I'm going to be fighting harder. Several top party organizers are deeply worried, of course, about whether he is up to the task and can win.