CREATE TABLE table_17863 ("Constituency" TEXT, "Electorate" FLOAT, "s Spoilt vote" FLOAT, "Total poll  ( % ) " TEXT, "For  ( % ) " TEXT, "Against  ( % ) " TEXT)

How many for percentages are there when the against percentage is 35,782 (69)?
SELECT "For (%)" FROM table_17863 WHERE "Against (%)" = '35,782 (69)'
SELECT "For (%)" FROM "table_17863" WHERE "Against (%)" = '35,782 (69)'