04/06/2012 - Hotel Waldorf Astoria, New York.

Singer Jon Bon Jovi performs during a campign event for US President Barack Obama in New York on June 4, 2012. Obama is perched on a economic and political cliff edge: to one side lies solid ground and four more White House years, to the other, a plunge to defeat after a single term. Dismal jobs data, a slowing economy and fears that Europe's crisis will darken American skies came as a sickening blow last week to Obama's campaign, five months before election day on November 6. AFP PHOTO/Jewel Samad (Photo credit should read JEWEL SAMAD/AFP/GettyImages) 2012 AFP