NEW YORK (CNN) - Barack Obama took a major step Tuesday toward securing the Democratic presidential nomination. Not only did he score a convincing victory in North Carolina; but by drawing to a virtual tie in Indiana he made an already difficult path for Hillary Clinton to the presidential nomination significantly more challenging.
But Clinton vowed to soldier on, telling supporters at a rally in Indiana "it's full-speed on to the White House."
Obama wakes up this morning with a larger lead in pledged delegates as well as the overall popular vote. For Clinton, time for a rebound may be slipping away.