SELECT "Lead" FROM table_1183 WHERE "Socialist" = '35.5%'
What is the lead percentage when the socialist is at 35.5%?
CREATE TABLE table_1183 (
    "Date Released" text,
    "Institute" text,
    "Socialist" text,
    "Social Democratic" text,
    "Green-Communist" text,
    "Left Bloc" text,
    "Peoples Party" text,
    "Lead" text
)