Joe Biden failed to deliver a key line of his stump speech during a much-hyped fundraiser with former primary rival Sen. Elizabeth Warren. "Folks, as my coach used to say, 'It's go to time.' It's go time. Now," the presumptive 2020 Democratic presidential nominee told grassroots donors on Friday, correcting his error. Just 94 days before Election Day, the two-term vice president and 36-year U.S. senator, started the virtual event by thanking roughly 40,000 participants for helping him raise $1.5 million before July's fundraising deadline. Biden called on his supporters to get out the vote by Nov. 3, so together,...