Bill Burton, a spokesman for Obama, responded tartly. "While John McCain has a record of occasional independence from his party in the past, last year he chose to embrace 95 percent of George Bush's agenda, including his failed economic policies and his failed policy in Iraq. No matter how hard he tries to spin it otherwise, that kind of record is simply not the change the American people are looking for or deserve."

The young Illinois senator's success amounted to a victory of hope over experience, earned across an enervating 56 primaries and caucuses that tested the political skills and human endurance of all involved.

Obama stood for change. Clinton was the candidate of experience, ready, she said, to serve in the Oval Office from Day One.

Together, they drew record turnouts in primary after primary — more than 34 million voters in all, independents and Republicans as well as Democrats.

Yet the race between a black man and a woman exposed deep racial and gender divisions within the party.

Obama drew strength from blacks, and from the younger, more liberal and wealthier voters in many states. Clinton was preferred by older, more downscale voters, and women, of course.f+t

Personality issues rose and receded through the campaign:

Clinton's husband, the former president, campaigned tirelessly for her but sometimes became an issue himself, to her detriment.

And Obama struggled to minimize the damage caused by the incendiary rhetoric of his former pastor, the Rev. Jeremiah Wright, an issue likely to be raised anew by Republicans in the fall campaign.

Obama's triumph was fashioned on prodigious fundraising, meticulous organizing and his theme of change aimed at an electorate opposed to the Iraq war and worried about the economy — all harnessed to his own gifts as an inspirational speaker.

With her husband's two White House terms as a backdrop, Clinton campaigned for months as the candidate of experience, a former first lady and second-term senator ready to be commander in chief.

But after a year on the campaign trail, Obama won the kickoff Iowa caucuses on Jan. 3, and the freshman senator became a political phenomenon.

"We came together as Democrats, as Republicans and independents, to stand up and say we are one nation, we are one people and our time for change has come," he said that night of victory in Des Moines.

As the strongest female presidential candidate in history, Clinton drew large, enthusiastic audiences. Yet Obama's were bigger. One audience, in Dallas, famously cheered when he blew his nose on stage; a crowd of 75,000 turned out in Portland, Ore., the weekend before the state's May 20 primary.