CREATE TABLE table_63161 ("Source" TEXT, "Date" TEXT, "Jody Wagner" TEXT, "Pat Edmonson" TEXT, "Michael Signer" TEXT, "Rich Savage" TEXT, "Jon Bowerbank" TEXT, "Undecided" TEXT)

Which date had the undecided percentage at 42%?
SELECT "Date" FROM table_63161 WHERE "Undecided" = '42%'
SELECT "Date" FROM "table_63161" WHERE "Undecided" = '42%'