the next leader is going to have to be someone who can inspire, unify, heal, bring this country together to do big things. that's what gets me up every day in this campaign. we can't did i have tied democratic party. whether you consider yourself somewhat on the left of the party, a moderate, we have to come together. not just beat republicans. we have to have a bigger aspiration to unite americans, to fight for justice in this country. because we have a lot of work to do. >> so joe biden is leading, according to certain polls. there in south carolina. polls show that he leads the black vote particularly there which is an important electorate. a powerful electorate in south carolina. but even a few days ago, that you were the alternative to joe biden. what do you mean by that? >> well, clearly, we need to be unified in the party. where somebody has shown time and time again that in election