Well, here's the second round of polls.
And finally,
Hershel, duh.
I'm gonna have to say Hershel for this one, too. I love him but Maggie and Michonne should stick around for the long run, and Beth has potential to be a great character.
I think Hershel's time is up. They could always include the Hunters in this arc, or just have Hershel get killed by the Governor.