WASHINGTON – President Barack Obama enjoyed his highest favorable ratings in well over a year on the day after he ordered a U.S. operation that led to the death of Osama bin Laden.

Fifty-six percent said they approve of Obama's performance as president, according to a Washington Post-Pew Research poll taken Monday. Thirty-eight percent disapproved, and six percent weren't sure.

That's a nine-point jump from last month, when 47 percent approved and 45 percent didn't. It comes at a time when Obama's popularity has been struggling due to high gas prices and nagging unemployment. It's the president's highest approval rating since 2009; he never reached that mark last year.

The Post-Pew poll surveyed 654 randomly selected adults over the phone on May 2, and has a margin of error of plus or minus 4.5 percentage points.