CREATE TABLE table_17862 ("Constituency" TEXT, "Electorate" FLOAT, "s Spoilt vote" FLOAT, "Total poll  ( % ) " TEXT, "For  ( % ) " TEXT, "Against  ( % ) " TEXT)

How many electorates are there with Hedmark as a constituency?
SELECT COUNT("Electorate") FROM table_17862 WHERE "Constituency" = 'Hedmark'
SELECT COUNT("Electorate") FROM "table_17862" WHERE "Constituency" = 'Hedmark'