People need to be registered and logged in to vote. Without this feature there is no way to prevent multiple voting making any poll valueless.
Also bear in mind that there's nothing to stop multiple registrations, so poll can still be skewed by the malicious.
To give reasonable credibility some would argue that you would need to install a manually approved membership system to overcome that.
Volunteer Helper - but recommending that users move off the platform!
Once the admin for GregHelp now deleted.