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_22238 ( "Candidates" text, "Votes Khuzestan" real, "% of votes Khuzestan" text, "Votes Nationally" real, "% of votes nationally" text )

### Question ###
What was the percentage of national votes for Mahmoud Ahmadinejad?

### Accurate SQL ###

SELECT "% of votes nationally" FROM table_22238 WHERE "Candidates" = 'Mahmoud Ahmadinejad'