CREATE TABLE table_9515 ("Party" CLOB, "Leader" CLOB, "Seats" CLOB, "% of seats" CLOB, "First Pref votes" CLOB, "% FPv" CLOB)

What is the %FPv for the Workers' Party?
SELECT "% FPv" FROM table_9515 WHERE "Party" = 'workers'' party'
SELECT "% FPv" FROM "table_9515" WHERE "Party" = 'workers'' party'