BOSTON — Sen. John Kerry brought his long White House campaign to an end Wednesday, conceding the presidential election to George W. Bush and saying the time had come to "begin the healing."

"I'm sorry that we got here a little bit late and a little bit short," said a hoarse and stoic Kerry, noting that he had called Bush earlier at the White House and said they had a "good conversation."

"In America, it is vital that every vote count .. but the outcome should be decided by voters, not a protracted legal fight," Kerry said. "I would not give up this fight if there was a chance that we would prevail."

But Kerry also said that "there won't be enough outstanding votes for us to win Ohio, and therefore we cannot win this election."

"In this journey, you have given me the honor and the gift of learning from you," the senator said.

"I'm going to fight on for the people and the principles that I've stood for," said Kerry, who returns to the Senate to complete his term. Friends and admirers who joined him, running mate John Edwards and their families applauded lovingly during his 15-minute speech at this city's historic Faneuil Hall.

Preceding Kerry, Edwards said, "well, it was a long night and a long morning. ... We will continue to fight for every vote. We know every vote matters in our America and we will honor each and every one of you. We didn't start fighting for you when this campaign began and we won't stop fighting for you when this campaign ends."

With their families aligned in the front row, Kerry and Edwards appeared before a mammoth painting by George P. A. Healy. Measuring almost 27 feet in width, it depicts a famous 19th century exchange between Daniel Webster and South Carolina Senator Robert Hayne about the federal Constitution's jurisdiction over the states.

Inscribed on the frame are Webster's famous words: "Liberty and Union, Now and Forever."

They had gathered earlier at Kerry's Beacon Hill home. His two-year campaign for the White House ended abruptly with the loss of the make-or-break state of Ohio in a close election.

Sen. Edward M. Kennedy, who campaigned heavily for Kerry over the past year, entered Kerry's house Wednesday morning with his wife, Victoria. Also spotted going inside were David Thorne, Kerry's longtime friend and former brother-in-law, stepson Andre Heinz, and brother Cameron Kerry.

Kerry called Bush shortly before 11 a.m. to concede defeat after his campaign determined Ohio was out of reach.

"Congratulations, Mr. President," Kerry said.