President Obama's approval ratings rose following his announcement that U.S. military forces had killed terrorist mastermind Osama bin Laden, according to a new poll from Quinnipiac University. However, voters remain unsatisfied with the president's handling of the economy.

According to the poll, 52 percent of American voters approve of Obama's job performance while 40 percent disapprove. It is the president's highest job approval rating in a Quinnipiac poll since July 2009, when 57 percent of voters approved and 33 percent disapproved of his performance. Voters surveyed before bin Laden's death gave the president a 46 percent approval rating.

Voter approval of the president's handling of foreign affairs improved as well, from 43 percent before the killing of bin Laden to 51 percent after his death.

But while bin Laden's demise may have helped burnish Obama's foreign policy credentials, the president earned poor scores for handling the economy, and voter attitudes on whether he deserves re-election only marginally improved.

A majority (57 percent) of voters still disapprove of Obama's economic management while only 38 percent approve -- a one-point bump from his ratings before bin Laden's death. Along similar lines, 46 percent of voters believe Obama deserves to be re-elected compared with 45 percent before bin Laden's killing.

"The killing of Osama bin Laden has helped President Barack Obama's popularity, but not massively," Peter A. Brown, assistant director of the Quinnipiac University Polling Institute, said in a press release.

He added: "The big question, now that we know how large the initial bump is for the president, is how long it will last."