Former Vice President Joe Biden and Sen. Bernie Sanders sought in the Democratic debate to cast themselves as best-positioned to lead the nation through a global pandemic, uniting in their criticism of President Donald Trump's response to the fast-moving coronavirus but diverging in how they would confront the spiraling public health and economic crisis.

South Carolina provided Joe Biden with a lifeline he desperately needed, propelled by the power of the black vote, but his victory does not necessarily provide clarity to the race.