I don't think just one is going to bite the dust by the end of this season.
My guess would start with Andrea, Glenn & Maggie, Hershel, Milton, Merle, Carol. Which of these, maybe all, maybe just a few. It depends on where the writers want to go next season. If they follow the graphic novel, well, not many people walk out of that prison.
This sometimes, not always, but sometimes, means that their character has bit the dust. Now, last week Laurie Holden (Andrea) was on, and her character is still alive; but, for how long I don't know. Still, I'm thinking by the end of this season the Governor may be toast.