In 1844 he was appointed as a Democrat to the U.S. Senate to fill the vacancy caused by the resignation of Nathaniel P. Tallmadge , and was subsequently elected to a full term , holding office from November 30 , 1844 , to March 3 , 1851 . He was Chairman of the United States Senate Committee on Finance ( 1849 – 1850 ) , a member of the Committee on Manufactures ( Twenty-ninth and Thirtieth United States Congresses ) , and a member of the Committee on Private Land Claims ( Thirty-first United States Congress ) . As a senator and after , Dickinson was the leader of the conservative Hunker faction of the New York Democratic Party , and would eventually become leader of the " Hards " who opposed reconciliation with the more radical Barnburner faction which had left the party in 1848 to join the Free Soilers . Dickinson resumed the practice of law in 1851 . He was delegate to the 1852 Democratic National Convention . In 1853 , President Franklin Pierce appointed him as Collector of the Port of New York , but he declined to take office . In 1860 , he supported John C. Breckinridge for President
1852 Democratic National Convention
1852 Democratic National Convention
Daniel S. Dickinson