Question: What was spent per voter when the spent per vote was 20.07?
Schema: create table table_22097588_9 (spent_per_voter___php__ varchar, spent_per_vote___php__ varchar, PRIMARY KEY (spent_per_voter___php__))
SQL: select spent_per_voter___php__ from table_22097588_9 where spent_per_vote___php__ = "20.07"