Board Thread:General Discussion/@comment-3125844-20140720214415/@comment-4877635-20141004105733

Hmcooper4 wrote: Actually, unless something changed, Emma is the Sheriff. David just filled in while Emma was trapped in the EF with Snow, though he still works down at the police station. I would actually classify him more as a Deputy.

In 3x13, he is the new sheriff because Emma lived in New York and was just visiting. He probably still is the Sheriff unless Emma wants it back.