Obama: RFK’s wife Ethel (statement here), Eisenhower’s granddaughter Susan (Read op-ed here), California’s Spanish paper La Opinion (editorial here).
McCain: Ga. Sens. Saxby Chambliss, Johnny Isakson, a bunch of US House members, CEO Steve Forbes, former Mass. Gov Paul Cellucci (both moving over from Giuliani).
Clinton: Grammy-award winning artist Mýa Harrison (statement here).
Romney: Alaska Sen. Lisa Murkowski and NJ Rep. Mike Ferguson.