CREATE TABLE table_2640 ("Party Name" TEXT, "States contested" FLOAT, "Seats contested" FLOAT, "Seats won" FLOAT, "No. of Votes" FLOAT, "% of Votes" TEXT, "% in Seats contested" TEXT, "Forfeited in seats" FLOAT)

What is the lowest number of states contested under apna dal?
SELECT MIN("States contested") FROM table_2640 WHERE "Party Name" = 'Apna Dal'
SELECT MIN("States contested") FROM "table_2640" WHERE "Party Name" = 'Apna Dal'