Export All Polls and Votes

Sorry, WP-Polls has no export function. If you need the data, it is in the database tables wp_pollsa and wp_pollsq.

wp_pollsq stores the poll question and total vote while the wp_pollsa is linked to the wp_pollsq with the poll answers and the number of votes per question.

There is another table called wp_pollsip which contain the logs probably not that useful for you.