voters for biden will decrease, that's a potential path for trump to win. he has to maintain every single voter from 2020, but if biden sees a dip, that is a chance for trump to return to the white house. >> biden's numbers are the lowest they've been for any president in the last 20 years. that's pretty significant. >> and certainly going to be a tall order for the president and his re-election team. no question about it. all right, but it comes down to a choice. polls are one thing. going into that ballot booth and casting a vote, that's quite another. thank you very much. really appreciate it. as republicans prepare to caucus in iowa, allies for president biden are also there tonight spreading the president's message. president biden's message, that is. we're speaking with michael tyler coming up in just a few moments. stay with us. you're live in the "cnn newsroom."