Hello,
Is it possible for guests to vote in polls?

This is not something possible at the present time. Only members can vote in polls

3 minutes ago, Marc Stridgen said:

This is not something possible at the present time. Only members can vote in polls

 
Ok, I understand. It will be a very valuable add-on.
Is it possible to open just a poll without a topic?

It isnt. They are attached to topics