 New polling on President Biden conducted before the president's COVID diagnosis revealed Wednesday. ABC's D.C. Bureau Chief Rick Klein is reporting from Milwaukee. The new poll out from the Associated Press, 70% of adults overall and 65% of Democrats, two in three Democrats, even now, just weeks before his own convention, think that Joe Biden should step aside, even as Biden is defiant. So his team trying to push back on their own allies to say, even if he's down in the polls, it actually doesn't mean that much because they have the field game. I'll tell you,