Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_78 (karen_handel VARCHAR, poll_source VARCHAR, john_oxendine VARCHAR)
### Question:
What is Karen Handel polling at in the Insideradvantage poll where John Oxendine is at 15%?
### Answer:
SELECT karen_handel FROM table_name_78 WHERE poll_source = "insideradvantage" AND john_oxendine = "15%"