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_73 (incumbent VARCHAR, party VARCHAR, first_elected VARCHAR)
### Question:
Who is the incumbent that is a republican and first elected before 1864?
### Answer:
SELECT incumbent FROM table_name_73 WHERE party = "republican" AND first_elected < 1864