text:  Other elements of the president's health, including his pulse, blood pressure, respiratory rate and blood count, are all normal. Biden's diagnosis has fueled further speculation on if he'll stay at the top of the Democratic ticket as voters, donors and lawmakers continue to express concern on the president's ability to beat Trump in November. Deepa Shivaram, NPR News for Hoboth Beach, Delaware. And I'm Dale Willman in Washington. You're listening to NPR News.