You'll need more than a single table - at least two if you don't count the user table (I assume that it already exists)

         +---------+
         | user    |
         +---------+
         | user_id |
         +---------+
              |       
              |
             /|\
        +-----------+
        | poll      |
        +-----------+
        | poll_id   |
        | user_id   |
        | header    |
        | question  |
        +-----------+
              |       
              |
             /|\       
       +-------------+
       | option      |
       +-------------+
       | option_id   |
       | poll_id     |
       | option      |
       | votes       |
       +-------------+
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