Biden gave voters who watched the debate a clear choice in the remaining primary elections and, if successful there, a defining one in November.
With presidential politics changing fast, even more change is in the wind because of the coronavirus pandemic that brings many changes to America and the world.
Will the Biden juggernaut continue to build or will Sanders rebound? One of the many questions still facing Democrats.
A lot of things changed. Bernie Sanders lost his delegate lead as Joe Biden’s resurgence swamped most of the primaries of Tuesday.