Hoar was delegate to the Massachusetts constitutional convention in 1820. He was elected a Fellow of the American Academy of Arts and Sciences in 1824. Hoar served in the State senate in 1826, 1832, and 1833. Elected as an Anti-Jacksonian candidate to the Twenty-fourth Congress (March 4, 1835 – March 3, 1837), he was an unsuccessful candidate for reelection in 1836 to the Twenty-fifth Congress.HOAR, Samuel, (1778 - 1856) Biographical Directory of the United States Congress: 1774 - Present. Retrieved January 20, 2004.
