Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_204_481 ( id number, "poll source" text, "date(s)\nadministered" text, "sample\nsize" number, "margin of\nerror" text, "andrew\ncuomo (d)" text, "rob\nastorino (r)" text, "other" text, "undecided" text )

### Question ###
number of polls -lrb- out of seven -rrb- in which more than 12 % of those polled were undecided

### Accurate SQL ###

SELECT COUNT("poll source") FROM table_204_481 WHERE "undecided" > 12