CREATE TABLE table_22654 ("Date Released" TEXT, "Polling institute" TEXT, "Social Democratic" TEXT, "Socialist" TEXT, "Green-Communist" TEXT, "Democratic and Social Centre" TEXT, "Lead" TEXT)

How many socialist have a lead of 12.6%?
SELECT COUNT("Socialist") FROM table_22654 WHERE "Lead" = '12.6%'
SELECT COUNT("Socialist") FROM "table_22654" WHERE "Lead" = '12.6%'