CREATE TABLE table_name_78 (karen_handel VARCHAR, poll_source VARCHAR, john_oxendine VARCHAR)

What is Karen Handel polling at in the Insideradvantage poll where John Oxendine is at 15%?
SELECT karen_handel FROM table_name_78 WHERE poll_source = "insideradvantage" AND john_oxendine = "15%"
SELECT "karen_handel" FROM "table_name_78" WHERE "15%" = "john_oxendine" AND "insideradvantage" = "poll_source"