CREATE TABLE table_23628 ("Candidate" TEXT, "Office" TEXT, "Home state" TEXT, "Popular vote" FLOAT, "States \\u2013 first place" FLOAT, "States \\u2013 second place" FLOAT, "States \\u2013 third place" TEXT)

How many different popular vote counts were there for the candidate Rick Perry?
SELECT COUNT("Popular vote") FROM table_23628 WHERE "Candidate" = 'Rick Perry'
SELECT COUNT("Popular vote") FROM "table_23628" WHERE "Candidate" = 'Rick Perry'