 NPR's Asma Khalid joins us now to tell more. Hi, Asma. Hi, good morning. Biden keeps insisting that he is staying in the race, but that is not stopping calls for him to reconsider. So what is Harris saying about these suggestions that she'd take over at the top of the ticket? Well, she hasn't been entertaining any of the speculation. She has said he, Biden, is the candidate, period. And Harris, I will say, is one of the few people who can really be a validator for Biden. And that's what she's been trying to do.