(CNN) - Obama staffers followed a late-night Clinton campaign conference call Tuesday with one of their own just minutes later, with campaign manager David Plouffe reporting that the Illinois senator was still holding a narrow edge among pledged delegates, with just a few states left to report.
"If this ends up being a draw – and it may end up that we win more states – and the delegates are close, it would a remarkable night for us," said Plouffe.
He said the campaign’s tally of delegates awarded in voting tonight stood at 606 to 534, thanks to a big win for Obama in Illinois compared to a narrower victory for Clinton in New York.
Plouffe also predicted victories in Kansas and Minnesota – states Obama did win a short time later. (They amended their count shortly after midnight, saying it was 677-634 in Obama’s favor.)
He said the campaign would release a final delegate count between 3 and 5 a.m. - after results were expected in California, the night’s big prize.
Clinton, they conceded, maintained an advantage among superdelegates – unpledged delegates which may prove decisive in this close race.
–CNN’s Suzanne Malveaux and Chris Welch contributed to this report