 Fellow Democrats are closely watching how the president performs in public, with several members of Congress, including one senator, calling for him to abandon his bid for a second term in the White House. Mr Biden has insisted he's staying in the race and will win it. The first results are beginning to come in from Iran's presidential election runoff. The signs so far suggest a tight race between a reformist candidate and a hardline rival. Kazran Adji is from BBC Persian.