Allow to hide the poll percentages % until it ends, for polls where you dont want people to know the % they are voting like in president elections.
For anonymous polls, it would be helpful if all the votes were hidden until the poll was completed. This would help people vote on what they really want without being swayed by the current results of the poll.
Hide Pole Results until after voted - This should be an obvious feat. Preventing folks from seeing results before they make a vote so poles aren't based on following the popular option - more diverse. Shows what people actually want/like.
An option to keep poll results secret for a set amount of time after it's posted. Can help avoid people being swayed in their votes by early results.