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_20468206_1 ( county VARCHAR, mccain_percentage VARCHAR )

### Question ###
Name the county for mccain being 38.78%

### Accurate SQL ###

SELECT county FROM table_20468206_1 WHERE mccain_percentage = "38.78%"