A little under a month before Americans cast their ballots, they can be a fly on the wall for a conversation between Senator Elizabeth Warren and Representative Alexandria Ocasio-Cortez.The Democratic lawmakers will be interviewed together by The New Yorker’s Andrew Marantz as part of the 21st New Yorker Festival, which will, for the first time, be a mostly virtual affair. A dozen talks, panels and performances will be livestreamed on the festival website from Oct. 5 to 11.This year’s lineup is packed with stars like Chris Rock, Steve Martin, Yo-Yo Ma and Ira Glass. Attendees will also get a chance to hear from Dr. Anthony Fauci, who has been largely absent from national television since May. He will talk with Michael Specter, a science writer.Noah Hawley, the creator of the FX series “Fargo,” which returns Sept. 27, and Rock, this season’s star, will be interviewed by the journalist Doreen St. Félix. The comedians Jerry Seinfeld and Steve Martin will be in dialogue with Susan Morrison, an editor at the magazine.Viewers will also get the chance to hear several performances. The cellist Ma and the pianist Emanuel Ax will play following a chat with Alex Ross, The New Yorker’s music critic. Fiona Apple, who released her first album in nearly a decade last spring, will perform after a chat with Emily Nussbaum, who profiled her in March.Maya Rudolph, the actor and comedian who portrays the Democratic vice-presidential contender Kamala Harris on “Saturday Night Live,” will be interviewed alongside Natasha Lyonne, who starred in the Netflix series “Russian Doll.” And Elizabeth Alexander, the president of the Andrew W. Mellon Foundation, will talk with the civil rights lawyer Bryan Stevenson about social justice, in a free community event.The festival will also host the premiere of Regina King’s directorial debut, “One Night in Miami,” at the Queens Drive-In on Oct. 11, at 8 p.m. The film, which explores a pivotal moment in the early life of Muhammad Ali, will be followed by a prerecorded conversation between King, Kemp Powers (who wrote the screenplay and the stage play the film is based on) and The New Yorker’s editor, David Remnick.Attendees in the New York area can also order a dinner created by the Harlem-based chefs Pierre Thiam and JJ Johnson any day that week. Streaming access to a prerecorded conversation with Thiam, Johnson and The New Yorker’s food critic, Hannah Goldfield, is included with the purchase.Events will be available to stream through Oct. 13. A full lineup is at newyorker.com/festival.