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_75618 ( "Source" text, "Date" text, "Goldberg" text, "Murray" text, "Silbert" text, "Undecided" text )

### Question ###
What is the date of the poll where Murray had 11% from the Suffolk University source?

### Accurate SQL ###

SELECT "Date" FROM table_75618 WHERE "Source" = 'suffolk university' AND "Murray" = '11%'