CREATE TABLE table_6216 ("Election date" FLOAT, "Party leader" TEXT, "Number of votes received" TEXT, "Percentage of votes" TEXT, "Number of deputies" FLOAT)

What were the number of deputies for the 1964 election year?
SELECT "Number of deputies" FROM table_6216 WHERE "Election date" = '1964'
SELECT "Number of deputies" FROM "table_6216" WHERE "Election date" = '1964'