Clinton to Take Stage in Praise of Obama's Candidacy

"We were not all on the same side as Democrats, but we are now," she said. "We are united and we are together and we are determined."

Clinton is expected to release her delegates to Obama on Tuesday. That symbolic gesture reduces the prospects for major disruptions when the roll is called to nominate the senator from Illinois -- a historic moment when Obama will become the first black politician to head a major party's national ticket.

Divisions clearly remain, however, and the McCain campaign did its best to foment unrest. It released a new advertisement featuring Wisconsin delegate Debra Bartoshevich declaring herself "a proud Hillary Clinton Democrat" who for the first time is supporting a Republican, McCain.

"A lot of Democrats will vote McCain," she says in the spot. "It's okay, really."

Clinton repudiated the ad in her appearance before the New York delegation, saying: "I'm Hillary Clinton, and I do not approve that message." But Howard Wolfson, who was her communications director, went public with the grievances her husband is still nursing. Writing in the New Republic, Wolfson said the former president "feels like the Obama campaign ran against and systematically dismissed his administration's accomplishments. And he feels like he was painted as a racist during the primary process."

Wolfson made it clear that he thinks it is Obama who needs to make amends.

"Senator Obama would go a long way towards healing these wounds if he were to specifically praise the accomplishments of the Clinton presidency in a line or two during his speech on Thursday," he concluded. "That should be painless."

Branigin reported from Washington. Staff writers Shailagh Murray in Denver and Anne E. Kornblut, traveling with Obama, contributed to this report.