1824 and 1825 United States Senate elections
The 1824 and 1825 United States Senate elections were elections for the United States Senate that saw the Jacksonians gain a majority over the Anti-Jacksonian National Republican Party. As these elections were prior to ratification of the seventeenth amendment, Senators were chosen by state legislatures. Results summary. Senate Party Division, 19th Congress (1825–1827) Race summaries. Bold states link to specific election articles. Special elections during the 18th Congress. In these special elections, the winners were seated during 1824 or before March 4, 1825; ordered by election date. Races leading to the 19th  Congress. In these general elections, the winner was seated on March 4, 1825 (except where noted due to late election); ordered by state. All of the elections involved the Class 3 seats. Special elections during the 19th Congress. In these special elections, the winners were seated in 1825 after March 4; ordered by election date. Delaware. Delaware (Special, Class 1). Incumbent Democratic-Republican Caesar A. Rodney resigned on January 29, 1823 after being appointed U.S. Minister Plenipotentiary to the United Provinces of the River Plate, an office now known as the U.S. Ambassador to Argentina, by President James Monroe. A  special election was held on January 13, 1824. Federalist Anti-Jacksonian Thomas Clayton, a Delaware State Senator and former congressman was elected to the office, beating Delaware State Representative Henry M. Ridgely, who was also a Federalist, but one with Jacksonian sympathies. Delaware (Special, Class 2). The Delaware General Assembly had failed to elect a senator in the previous election cycle. Nicholas Van Dyke, the incumbent, was reelected late. Illinois. Illinois (Special). Incumbent Democratic-Republican Ninian Edwards resigned on March 3, 1824 to become the U.S. Minister to Mexico, although he never took office. Former Speaker of the Illinois House  of Representatives John McLean, a Democratic-Republican was elected to take his place on November 24, 1824. Louisiana. Louisiana (Special). Incumbent Democratic-Republican James Brown resigned on December 10, 1823 to become the U.S. Minister to France. A special election was held on January 15, 1824. Both candidates were Democratic-Republicans but were split over loyalties to Andrew Jackson. The Anti-Jacksonian, former congressman Josiah S. Johnston narrowly defeated Jacksonian congressman Edward Livingston. Ohio. Incumbent Democratic-Republican Jacksonian Ethan Allen Brown was elected in an 1822 special election following the death of William A. Trimble. He was defeated for reelection  by William Henry Harrison, a former congressman and war hero, who was an Anti-Jacksonian.