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_28898948_3 (by_election INTEGER, electorate VARCHAR)
### Question:
When waikaia is the electorate what is the highest by-election?
### Answer:
SELECT MAX(by_election) FROM table_28898948_3 WHERE electorate = "Waikaia"