Option 1: Please, use this attached file.
Option 2: If it still doesn't work, then if you can take the time, please do the following: run in phpmyadmin, selecting the vbulletin database, the query:
SELECT votes FROM vb_poll;
and "export" the result into a file, as phpmyadmin allows to, or copy paste them here (if not too many, at least).
Option 3: Or, you could perhaps do this: if you agree to losing the number of votes for the time being, then in the (last) file vbulletin37_to_smf.sql, the file attached to this message, you could:
'votes' => (is_numeric($votes[$i]) ? $votes[$i] : 0),
'votes' => 0,