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Ms. Boynton, a registered Democrat who voted for Republican John McCain in 2008, added: “I don’t think what we initially set out to do has been done. I mean, we still don’t have [Osama] bin Laden.”

Erika Hickert, 68, a retired school teacher in Maricopa, Ariz., said she is an independent who voted for Mr. Obama in 2008 and would do so again if given the chance. She felt the same about the wars.

“I’m just tired of taking care of the world,” Ms. Hickert said. “They need to learn to take care of themselves, and war isn’t the way to teach them.”

She also doesn’t distinguish between Iraq and Afghanistan, even with the conflict winding down in one while ramping up in the other.

“I think of them as one big conflict,” Ms. Hickert said. “We’re militarily supporting both of them.”

Mr. Landers, the electrician, was among those with split opinions about Afghanistan in particular.

A registered Republican who voted for Mr. McCain, Mr. Landers said he did not favor pulling out of Afghanistan despite his concern about the mounting death toll and his opposition to a long-term combat role.

“I think we need to get the government stabilized before we get out of there. I don’t know how we can do that, though,” he said.

Campbell, the city worker, is a Democrat who voted for Mr. Obama. She has a son-in-law in the Marine Reserves who has already made one tour of Iraq and is slated to head back to the Middle East next year.

“I think it’s important that, as citizen of the United States, where we live in a free country … that we help support the mission of bringing along peace,” she said.

Another poll respondent, Jeff Foust, 60, a retired public defender in Springfield, Ill., was more sanguine.

“All we can do is continue to provide some support but I think that we can’t stay in either country for a long term with large numbers of troops,” said Mr. Foust, a Democrat who voted for Mr. Obama in 2008 and said he would again. “We’ve been there long enough in both places that winning is up to the people that live there.”

The AP-GfK Poll was conducted August 11-16 by GfK Roper Public Affairs and Corporate Communications. It involved landline and cell phone interviews with 1,007 adults nationwide, and has a margin of sampling error of plus or minus 4.5 percentage points.

Associated Press Polling Director Trevor Tompson, AP News Survey Specialist Dennis Junius and AP writers Lauren Sausser and Ileana Morales in Washington contributed to this report.