serialize?

Hi. I’m coding a poll system which stores information in MySQL. When a new poll is created a new row is inserted in the table ‘polls’. There I keep basic information such as the question, id etc. But should I keep the poll options in one field also? Then I would create an array from the poll options the user specifies, serialize it and then base64_encode it. Is this a good way of storing an array or should I make a database table named for example: ‘polls_options’? Any opinions and thougts on this appreciated.