Charles M. Blow: Warnings from South Carolina

Before the South Carolina Democratic primary, many in elite political circles were writing the Joe Biden campaign’s obituary. And they were enjoying it.Political cycles love stories of trajectory: an improbable rise or a tragic fall. Coasting lacks sizzle. A coronation lacks sensation. So being an early front-runner is a precarious position. The power of story pulls on you like gravity, willing you to the ground.But, with Biden’s blowout victory in South Carolina, he breathed new lif