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_20693870_1 (mccain_number VARCHAR, obama_percentage VARCHAR)

### Question ###
How many numbers were recorded under McCain when Obama had 27.2% voters?

### Accurate SQL ###

SELECT COUNT(mccain_number) FROM table_20693870_1 WHERE obama_percentage = "27.2%"