File photo of Democratic presidential candidate Obama smiling beside Senator Kennedy at a rally in Washington

 
File photo of Democratic presidential candidate Obama smiling beside Senator Kennedy at a rally in Washington
Democratic presidential candidate Senator Barack Obama (D-IL) (L) smiles beside Senator Edward Kennedy (D-MA) at a rally at American University in Washington in this file January 28, 2008 file photo. For months, stars of local and national politics and celebrities have campaigned for the Democrat and Republican candidates, but ahead of the busiest day of the primary season called Super Tuesday, the pace has intensified. REUTERS/Mike Theiler/Files (UNITED STATES)