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_name_46 ( polling_institute VARCHAR, lead VARCHAR, labour VARCHAR )

### Question ###
Which polling institute showed a lead of 12% and a Labour share of the poll at 40.2%?

### Accurate SQL ###

SELECT polling_institute FROM table_name_46 WHERE lead = "12%" AND labour = "40.2%"