In the Post-ABC News poll conducted last week, 43 percent of Americans say the war is worth fighting, compared with 31 percent in March. A significant amount of the fresh support came from the independent voters Obama is courting as he campaigns for reelection next year.

But a majority of Americans still say the war, which is in its 10th year, is not worth fighting, despite the killing last month of Osama bin Laden by U.S. forces in Pakistan.

The 16-point bump in support that Obama received for his handling of the war immediately after bin Laden’s death has been cut in half, the poll found.