First, do a Google search against Stack Overflow to see if your poll has already been done. Chances are good it has. You can do this by doing the following in Google:
site:stackoverflow.com your relevant search terms
Second, polls tend to be considerably more frowned upon now than they used to be. A year ago, they were semi-permissible, depending on whether or not they brought any interesting content to the table. Nowadays, with the community and guidelines having been solidified more greatly, they tend to be considered noise by a massive segment of the population, myself included.
If you absolutely, positively feel you must do a poll on Stack Overflow (again, see first line here), at a minimum mark it Community Wiki. This is not just to prevent rep gain, but also to allow for users to edit the entries more easily (with lower rep requirements for editing). This has been something of the "standard" on poll questions.
But again, seriously, don't. I'll bet you a doughnut your poll has been asked already, or that it isn't actually programming-related.