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_27003223_4 ( democratic VARCHAR, registered_voters VARCHAR )

### Question ###
what is the percentage of democratic voters in which the registered voters is 67.8%?

### Accurate SQL ###

SELECT democratic FROM table_27003223_4 WHERE registered_voters = "67.8%"