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

Question: Which Number of electorates (2009) has a Reserved for (SC / ST /None) of total:?
SQL: SELECT "number_of_electorates_2009" FROM "assembly_segments" WHERE "reserved_for_sc_st_none"='total:';