Obama increased his support among superdelegates after winning 11 consecutive nominating contests against Clinton, The New York Times reported.
"The momentum doesn't hurt. So yeah, I think he's going to unify the upcoming primaries, and I think he's going to win them," said vice chairwoman of the Maine Democratic Party Marianne T. Stevens, who will vote as a superdelegate for Obama.
The stream of success for Obama led Georgia U.S. Rep. John Lewis to change sides and motivated other undecided superdelegates to give Obama their support. Nine superdelegates have announced their support for Obama this week, the report said.
The report said the superdelegates' votes are extremely influential because neither candidate is expected to get the 2,025 delegates needed to assure a nomination at the Democratic Convention in August.