WASHINGTON — Senator Clinton’s move to the left on the Iraq war has not won over the conflict’s most vocal opponents, who showered her with boos at a conference of liberal activists for the second year in a row.

Mrs. Clinton addressed about 3,000 attendees of the “Take Back America” Conference yesterday at the Washington Hilton, and most of her speech lambasting the Bush administration on a variety of domestic fronts met with widespread approval and interruptions of applause. That is, until she came to Iraq, an issue on which she has long faced criticism from the anti-war movement, even as she has shifted in recent months to support a withdrawal of most American combat forces.

Near the conclusion of the half-hour address, Mrs. Clinton offered her view of the war and touted her recent vote against an emergency funding bill that did not include a timetable for pulling out American forces. While she criticized President Bush, she lauded the American military and cast blame on the Iraqi government — a stance that failed to satisfy some in the audience.

“The American military has succeeded. It is the Iraqi government which has failed to make the tough decisions that are important for their own people,” Mrs. Clinton said, before a portion of the crowd interrupted her speech with boos. As her supporters tried to drown them out with cheers, Mrs. Clinton paused.

She attempted to continue her speech several times, but the competing cheers and jeers were too loud. Finally, she smiled and quipped, “I love coming here every year.”

Mrs. Clinton then referred to a group of activists standing near the front of the ballroom holding signs demanding an immediate exit from Iraq. “I see the signs, ‘Lead us out of Iraq now.’ That is what we are trying to do,” she said, pointing to legislation she is co-sponsoring to deauthorize the war.

When the former first lady appeared before the same conference last year, some audience members also booed her position on Iraq, but at that time, she was opposed to a “date certain” for the withdrawal of America troops.

An activist who jeered Mrs. Clinton yesterday, Elizabeth Hourican of Arizona, said she expected more from the senator. “We expect her to lead us out and work harder,” she said. Ms. Hourican criticized Mrs. Clinton for not speaking up before she voted against the funding bill last month, deriding what Ms. Hourican said was a “political” decision to wait until nearly all senators had voted before giving her own thumbs down.

The mixed reaction to Mrs. Clinton’s speech was borne out in a straw poll at the conference sponsored by Politico.com. She finished third with 17% of the 720 votes cast, behind both Senator Obama of Illinois and John Edwards, whose speeches on Tuesday garnered applause throughout. Mr. Obama edged Mr. Edwards, 29% to 26%. One-third of the respondents cited the war as the most important issue to them.

Much of the audience yesterday reacted warmly to the rest of Mrs. Clinton’s address, which resembled her campaign stump speech and amounted to a harsh attack on the Bush administration. Declaring that the Constitution “is being shredded,” she assailed Mr. Bush over the domestic wiretapping program, the U.S. attorney controversy, the handling of Hurricane Katrina, and what she said was “cronyism run amok.”

“It is everything our founders were afraid of,” Mrs. Clinton said.

She criticized the administration’s record on political appointments and promised change if elected. “When I’m president, the entrance to the White House will no longer be a revolving door for the well-connected, but a door of opportunity for the well-qualified,” she said.

Mrs. Clinton also derided the president’s veto yesterday of legislation that would allow federal funding for embryonic stem-cell research. “This is just one example of how the president puts ideology before science, politics before the needs of our families, just one more example of how out of touch with reality he and his party have become,” she said.