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_23628 ( "Candidate" text, "Office" text, "Home state" text, "Popular vote" real, "States \u2013 first place" real, "States \u2013 second place" real, "States \u2013 third place" text )

### Question ###
How many different popular vote counts were there for the candidate Rick Perry?

### Accurate SQL ###

SELECT COUNT("Popular vote") FROM table_23628 WHERE "Candidate" = 'Rick Perry'