CREATE TABLE table_31338 ("Constituency No." FLOAT, "Vidhan Sabha Constituency" TEXT, "Reservation for SC/ST" TEXT, "District" TEXT, "Lok Sabha" TEXT)

What district has 213 constituents?
SELECT COUNT("District") FROM table_31338 WHERE "Constituency No." = '213'
SELECT COUNT("District") FROM "table_31338" WHERE "Constituency No." = '213'