No because then people won't answer the poll or will be influenced by the results before they answer it on their own. I'm one that when I ask a poll question I don't even give a "see results" option. You either want to answer it or you don't. And even if the person isn't too into the question they will still vote for the option they agree most with so I don't see the points of "see results"
However giving an extra opinion (typed in) on poll questions is pointless.
For questions only addressing a particular group of people ie. males, females, certain age groups, certain experiences, definitely, but no if it is a general question that the asker wants all people to answer.