A new CNN poll shows another large drop in public support for war in Afghanistan:

A CNN/Opinion Research Corp. survey released Tuesday morning indicates that 39 percent of Americans favor the war in Afghanistan, with 58 percent opposed to the mission.

Support is down from 53 percent in April, marking the lowest level since the start of the U.S. military mission in Afghanistan soon after the September 11, 2001, attacks.

Especially notable–the hard core supporters are starting to flake:

"Most of the recent erosion in support has come from within the GOP," said Keating Holland, CNN’s polling director. "Unlike Democrats and independents, Republicans still favor the war, but their support has slipped eight points in just two weeks."

…"The Afghan war is almost as unpopular as the Iraq war has been for the past four years," Holland said, noting that support for the war in Iraq first dropped to 39 percent in June 2005 and has generally remained in the low to mid-30s since.

Danger ahead, Mr. President.