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_203_558 ( id number, "election" number, "number of\npopular votes" number, "% of\npopular votes" number, "total\nelected seats" text, "+/-" number )

### Question ###
which election had the highest percentage of popular votes - 2003 or 2007 ?

### Accurate SQL ###

SELECT "election" FROM table_203_558 WHERE "election" IN (2003, 2007) ORDER BY "% of\npopular votes" DESC LIMIT 1