CREATE TABLE "assembly_segments" (
  "constituency_number" text,
  "name" text,
  "reserved_for_sc_st_none" text,
  "district" text,
  "number_of_electorates_2009" real
);

Question: Churai has what as the fewest number of electorates?
SQL: SELECT MIN("number_of_electorates_2009") FROM "assembly_segments" WHERE "name"='churai';