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_21788 ( "Poll Source" text, "Dates administered" text, "Democrat: John Lynch" text, "Republican: Joe Kenney" text, "Lead Margin" real )

### Question ###
Name the lead margin for democrat john lynch being 62%

### Accurate SQL ###

SELECT "Lead Margin" FROM table_21788 WHERE "Democrat: John Lynch" = '62%'