No there is no poll demo, I could make one if you wish to see it live for test if you want. But it's pritty much what you see in the link you gave.

You can set 5 options to choose from and then let users vote.

Hello Andre,

thank you for your offer. It could be more usefull in the future for other users. I know that pictures seems to be enought but chance to try all objects could be advance for all. I´m just interesting in Poll or Skill Bar and looking for something what is able to make Vote and after Voting to make results with evaluation success (something like test). 

Thank you Andre. Could you show Skill Bar on your test page too, if possible ?

I´m sorry, I see that you already have Skill Bar below the Poll :) .