let's head to this morning's must reads, first as the democratic presidential race tightens, harold meyersonh the l.a. times, biden appeals to the older voters, sanders to the young, that has to change. the democrats have a problem, neither joe biden or bernie sanders has put together a coalition that can defeat donald trump. he goes on to say each is bombing with the other's base. joining me is nicholas wu politics reporter with usa today. how can the eventual nominee bridge the divide, is either candidate better poised to do so? >> i think what we're seeing at this point is the bifurcation of the race in progressive and moderate camps. all eyes will be on both candidates for their eventual vice presidential pick, and for biden it will be someone who can appeal to the progressive side to unite the party around his eventual nomination if that's the case, and sanders if he's the nominee, he'll look towards a vice presidential nominee that can win over biden's base, maybe a more moderate vp pick. >> and that thinking goes against the next op-ed, "the washington post", henry olsen, saying biden