ABC News - World News Tonight with David Muir
Oct 21, 2020 President Trump and Joe Biden prepare for their final Presidential Debate. The President complains about the Debate Commission's new rule to mute the microphone, while former President Obama stumps for his former VP in the key battleground state of Pennsylvania. The coronavirus surging with hospitalizations on the rise in 41 states. The CDC issues new guidance on redefining close contact. Pope Francis voices support for same-sex civil unions, and the landing on an asteroid.