CREATE TABLE table_23638 ("County" TEXT, "Obama %" TEXT, "Obama #" FLOAT, "McCain %" TEXT, "McCain #" FLOAT, "Others %" TEXT, "Others #" FLOAT)

What percentage of voters choise McCain in Burlington?
SELECT "McCain %" FROM table_23638 WHERE "County" = 'Burlington'
SELECT "McCain %" FROM "table_23638" WHERE "County" = 'Burlington'