CREATE TABLE table_21580 ("County" TEXT, "Kerry%" TEXT, "Kerry#" FLOAT, "Bush%" TEXT, "Bush#" FLOAT, "Others%" TEXT, "Others#" FLOAT)

Name the bush% for where others # is 90
SELECT "Bush%" FROM table_21580 WHERE "Others#" = '90'
SELECT "Bush%" FROM "table_21580" WHERE "Others#" = '90'