CREATE TABLE table_1181 ("Constituency" TEXT, "Electorate" FLOAT, "s Spoilt vote" FLOAT, "Total poll  ( % ) " TEXT, "For  ( % ) " TEXT, "Against  ( % ) " TEXT)

which electorate is 54787 of the constituency
SELECT "Constituency" FROM table_1181 WHERE "Electorate" = '54787'
SELECT "Constituency" FROM "table_1181" WHERE "Electorate" = '54787'