Poll: Support for Obama's Afghan plan, but not in details

Americans support President Obama's new Afghanistan strategy -- but just barely, according to the first poll since Obama outlined his plan in a nationally televised speech.

The USA Today/Gallup survey released late today found that 51 percent favor the plan, while 40 percent opposed it.

But on the details, there is deep division. While 38 percent said 30,000 more US troops was "about the right number," 36 percent said that is too many and 18 percent said it's too few.

And only one in five agree with Obama's plan to begin withdrawing US troops by July 2011, while 46 percent agree with Republicans who say it's too early to set a timetable, and another one in four say troops should start coming home sooner.

An overwhelming 73 percent, however, say they are worried that the cost of the war -- the troop surge is estimated at $30 billion next year -- will make it more difficult to deal with domestic issues.

The survey was conducted on Wednesday, the day after the president's primetime speech from West Point, and has a margin of error of plus or minus 4 percentage points.