Yale College; Yale University.
He practiced law in Northampton, Massachusetts, in 1808. Massachusetts House of Representatives
United States House of Representatives
Bates was elected to the United States House of Representatives (March 4, 1827 – March 3, 1835), where he was an Anti-Jacksonian. He was chairman of the United States. House Committee on Military Pensions in the Twenty-first Congress).
He declined to be a candidate for renomination in 1834.
United States Senate
He was elected as a Whig to the United States Senate to fill the vacancy in the term ending March 3, 1841, caused by the resignation of John Davis and on the same day elected for the term commencing March 4, 1841, and served from January 13, 1841, until his death. He was chairman of the United States. Senate Committee on Pensions (Twenty-seventh and Twenty-eighth Congresses).
Interment in Bridge Street Cemetery, Northampton, Massachusetts.
He was a member of the Massachusetts House of Representatives (1808–1809).