When was incumbent Leo E. Allen first elected?
CREATE TABLE table_1342315_12 (first_elected INTEGER, incumbent VARCHAR)
SELECT MIN(first_elected) FROM table_1342315_12 WHERE incumbent = "Leo E. Allen"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_1342315_12 (first_elected INTEGER, incumbent VARCHAR) Question: When was incumbent Leo E. Allen first elected? [/INST] SELECT MIN(first_elected) FROM table_1342315_12 WHERE incumbent = "Leo E. Allen" </s>