`  if this poll is about how to romanize 渤海 regardless of meaning, i'd agree ``Bohai`` is the most common romanization, primarily meaning Bohai Sea. if the question is about the subject of this article (which is what i thought i was voting on), then english reference publications are pretty much unanimous on using korean romanization, & since wikipedia uses the rr system, this article should remain titled Balhae. but i guess that hasn't been asked.  `