Here's my guesses
Glen (Hope not, but I'm fairly certain they're going to kill off him or Maggie)
Beth
Milton
Andrea
Tyreese's white friends whose names I don't care to learn
I was 100% positive Carol was a gonner in the season 2 finale, but somehow I was wrong, and she's become my favorite female character. She's become a real survivor, and they're already had her fake die once this season. I see her death as possible, but unlikely.
I don't think they'll kill Judith. As much widespread popularity as the show has gained, they probably don't want to alienate viewers by crossing that line and killing a baby (probably the same reason that the Gov hasn't raped anyone).
They would be absolute fools to kill off Daryl. Norman Reedus is the best actor in the show twice over, and because he's a non-comic character, there's no source material reason to kill him off. Also, he's the biggest fan favorite.