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_20799905_1 (obama_percentage VARCHAR, mccain_percentage VARCHAR)

### Question ###
What percentage did Obama get when McCain got 52.8%?

### Accurate SQL ###

SELECT obama_percentage FROM table_20799905_1 WHERE mccain_percentage = "52.8%"