You forgot to add that the majority of Americans don't think Kerry can handle the war in Iraq
Don’t forget to read this part of your poll you posted;
The poll, which was conducted from Saturday to Tuesday, surveyed 1,230 registered voters nationwide. It had a margin of error of plus or minus three percentage points.
Forty-one percent approved of Bush's handling of the Abu Ghraib prisoner abuse scandal, while 37 percent disapproved of his performance.
A majority of voters said presidential candidate Sen. John Kerry has done little to help: The poll found that 34 percent said Kerry has not offered a clear plan to handle the war, while 15 percent said he has. The other voters said they didn't know.
