Is Obama's momentum unstoppable?

Has Barack Obama won the Democratic presidential nomination?

By John Zogby
Pollster and independent political analyst

Feb 13, BBC News

It is certainly tempting to make this conclusion based on his amazing string of victories on Saturday and Tuesday evening.

But the short answer to the question has to be no.

Senator Obama has now more states than his rival, Senator Hillary Clinton, including the last six (plus the Virgin Islands and the national capital, Washington DC) and he now leads among delegates pledged to vote for him at the Democratic National Convention.

In addition to his momentum of victories, he has made significant inroads into constituencies that were the core of his opponent's support.

Thus, in Virginia and Maryland, exit polls revealed that he tied with Senator Clinton among white voters, and actually defeated her among women, lower-income voters, rural voters, those over 65 years of age, Catholics, and Hispanics.

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photo: Barack Obama is popular with moderate and independent voters (AFP)