Actually, the edit poll function that is available to both moderators and admins is only for the purpose of changing poll data, such as the number of people who voted or the names/amount of questions. It does not provide information about who voted what; that's what the Admin CP is for.

If I'm not mistaken, I believe there is a specific ID for every poll, and the ID can be looked up singlehandedly via the Admin CP. I could very likely be wrong, though.