Extension:SecurePoll/securepoll voters table

mysql> describe securepoll_voters;
+------------------+----------------+------+-----+---------+----------------+
| Field            | Type           | Null | Key | Default | Extra          |
+------------------+----------------+------+-----+---------+----------------+
| voter_id         | int(11)        | NO   | PRI | NULL    | auto_increment |
| voter_election   | int(11)        | NO   | MUL | NULL    |                |
| voter_name       | varbinary(255) | NO   |     | NULL    |                |
| voter_type       | varbinary(32)  | NO   |     | NULL    |                |
| voter_domain     | varbinary(255) | NO   |     | NULL    |                |
| voter_url        | blob           | YES  |     | NULL    |                |
| voter_properties | blob           | YES  |     | NULL    |                |
+------------------+----------------+------+-----+---------+----------------+