original_query: What was Allen J. Ellender's role in the United States Senate?
query: What was Allen J. Ellender's role in the United States Senate?
answer: Allen J. Ellender served as a United States Senator from Louisiana from 1937 to 1972.  He was President Pro Tempore of the Senate (1971–1972), Chairman of the Senate Committee on Agriculture (1955–1971), and Chairman of the Senate Committee on Appropriations (1971–1972). He voted with the Conservative Coalition 77% of the time and signed the Southern Manifesto in 1956.