text:  Plenty of reaction from the political world as well. From the onset of the debate, the 81-year-old Biden seemingly struggled even to talk, mostly using a weak, raspy voice. In the opening minutes, he repeatedly tripped over his words and lost his train of thought. But there were problems aside from the shakiness of Biden's voice. When he wasn't talking, he often stared off into the distance, mouth awkwardly open. Spin from Vice President Kamala Harris.