 A new poll sharply undercuts President Biden's claim that average Democrats are still with him. Sagar Magani, Washington. J.D. Vance delivers his acceptance speech. We need President Donald J. Trump. As Republicans prepare to wrap up their convention. I'm Steve Futterman in Milwaukee. Members of Congress want answers from the head of the Secret Service following last weekend's assassination attempt on Donald Trump. I'm John Stolnes in Washington.