US Democratic presidential candidate Clinton acknowledges supporters at Pennsylvania primary election night rally in Philadelphia

 
US Democratic presidential candidate Clinton acknowledges supporters at Pennsylvania primary election night rally in Philadelphia
US Democratic presidential candidate Senator Hillary Clinton (D-NY) points to a supporter at her Pennsylvania primary election night rally in Philadelphia, Pennsylvania, April 22, 2008. Clinton defeated rival Barack Obama in Pennsylvania on Tuesday, prolonging an increasingly negative Democratic presidential race and keeping alive her White House hopes. REUTERS/Jim Young (UNITED STATES) US PRESIDENTIAL ELECTION CAMPAIGN 2008 (USA)