A voting is created as following: (Remove the dot)
To add a closing time for the poll, add a date to the vote definition:
The vote can be aligned horizontally as well:
Users can only vote once on every voting. A wiki page can only contain one voting. The closing date and the alignment can be changed while a vote is running, but changing the candidates list will reset the voting. The current winner (if one exists) is shown below the voting.
<vote> Choice A Choice B Choice C </vote>