CREATE TABLE table_23846 ("Parish" TEXT, "Obama%" TEXT, "Obama#" FLOAT, "McCain%" TEXT, "McCain#" FLOAT)

What was McCain's percentage when Obama had 64.39% of the vote?
SELECT "McCain%" FROM table_23846 WHERE "Obama%" = '64.39%'
SELECT "McCain%" FROM "table_23846" WHERE "Obama%" = '64.39%'