Voters are shown by mouse over on the vote count. In default, only administrators can see it. You can change permission at "Admin" > "Permissions" > "Viewing who voted or flagged posts:".
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.