 Olivia Nuzzi reports this was true back in 2020, quote, a campaign trail was a grueling exercise for anybody of any age, from the youngest network embeds to the oldest would-be presidents. And back then, there were days when Biden appeared sharper than on others. I knew it was a good day when he saw me and winked. On such occasions, he joked and prayed and cried with voters. He stayed to take a photo with every supporter.