here we have joe biden, really, with no momentum, and goes into south carolina as a very wounded candidate. you know, the press is ready to declare people dead quickly. but we're alive, and we're coming back, and we're gonna win. [kristen] south carolina could be make or break for joe biden, who's leading here, and today getting a prominent endorsement from top democrat, congressman jim clyburn. we know joe. but most importantly, joe knows us. [abby] jim clyburn is the most important political figure in south carolina politics. that is a primary that is dominated by the power of black voters. i just want a regular person in the white house. so, when he did endorse joe biden, that changed the entire trajectory of the campaign for him. and it's rare in politics that we can say there was one factor that made all the difference. -this is a blowout. -yeah. for biden.