Which incumbent was first elected in 1964? 
CREATE TABLE table_1341707_15 (incumbent VARCHAR, first_elected VARCHAR)
SELECT incumbent FROM table_1341707_15 WHERE first_elected = "1964"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1341707_15 (incumbent VARCHAR, first_elected VARCHAR) Question: Which incumbent was first elected in 1964?  [/INST] SELECT incumbent FROM table_1341707_15 WHERE first_elected = "1964" </s>