Delegate dominance, but can he deliver a decisive sweep and get ever closer to that magic number . Or will nikki haley pull off the seemingly impossible and turn a last stand into real momentum to remain in the race . Good morning. Thanks for being here. It is 10 00 eastern. Im Ana Cabrera Reporting from new york. And welcome to the most consequential day so far in the race for the president ial nomination. It is Super Tuesday. The single biggest day on the primary calendar. The polls are open, are about to be, in 16 states across the country, and our team is in 13 of them. By the end of the day today, donald trump could be much closer to that magic number. Unless nikki haley can defy Delegate Math and political gravity. At some point maybe we should say the reason that america keeps losing is because of donald trump. Haley, shes not a problem. I think shes very negative for the party, but shes not a problem in terms of winning because were winning by a lot. And nbcs Vaughn Hillyard is