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 (county VARCHAR, mccain_percentage VARCHAR)

### Question ###
In what county did McCain get 57.8%?

### Accurate SQL ###

SELECT county FROM table_20799905_1 WHERE mccain_percentage = "57.8%"