"I know that the folks here in New Hampshire know this better than anyone because you got to know the candidates up close and personal, but because of Hillary Clinton's work, the issues of importance to women and working families are front and center."

Today's rally will be first joint appearance by Obama and Clinton since he clinched the Democratic presidential nomination after a bruising primary season. They chose Unity, both for its symbolic name and the fact that each received 107 votes there in the primary won by Clinton in January.

A new Associated Press-Yahoo News poll shows Obama has won over slightly more than half of Clinton's former supporters. About a quarter of Clinton's backers say they will support McCain over Obama.

Clinton yesterday resumed public and private campaigning to support Obama.

The New York senator spoke to two trade groups before an evening meeting to introduce Obama to her most loyal fund-raisers, while behind the scenes the two sides are working out details over the extent of her involvement with Obama's campaign going forward.

"I am asking you to do everything you can to help elect Barack Obama," Clinton told the American Nurses Association, a 2.9-million member group that backed her candidacy. "I have debated him in more debates than I can remember and I have seen his passion and his determination and his grit and his grace. In his own life he has lived the American dream."

She also spoke to the National Association of Latino Elected and Appointed Officials.

Three Clinton confidants are in talks with Obama's campaign to work out details of her future involvement, including travel, her role at the national convention and resolution of her more than $20 million debt.