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_44558 ( "Poll Source" text, "Dates administered" text, "Democrat: Carl Levin" text, "Republican: Jack Hoogendyk" text, "Lead Margin" real )

### Question ###
What is Poll Source, when Democrat: Carl Levin is 61%?

### Accurate SQL ###

SELECT "Poll Source" FROM table_44558 WHERE "Democrat: Carl Levin" = '61%'