Voting Api + Vote Up / Down = Vote Power I have installed VotingApi with Vote Up/Down, also have my own module which implements user exp and levels. I want the voted to be more powerful if the user has greater level. I search through Vote Up/Down files but didnt find a file inserting the vote to databse, so I could change it depending on my needs.
The vote will be casted by calling the Voting api function votingapi_set_votes(). But if you want to change the votes before sending it to Voting api there is hook for this called hook_vud_votes(&amp;$votes) which you can use.

Update:
The api file mentions a hook called hook_vud_votes(&amp;$votes) to alter the vote but in their code they are invoking the hook using drupal_alter(), so the right hook to implement is hook_vud_votes_alter(&amp;$votes), I think it is mistake in their api doc.