Historical Senate Elections
Explore U.S. Senate election cycles from the first Senate elections through 2024. Years with built-in result maps include interactive state-by-state maps; other years show historical summary pages with source links.
2024 53 seats
Republicans2022 51 seats
Democratic caucus2020 50 seats
Democratic caucus2018 53 seats
Republicans2016 51 seats
Republicans2014 54 seats
Republicans2012 55 seats
Democratic caucus2010 52 seats
Democratic caucus2008 58 seats
Democratic caucus2006 51 seats
Democratic caucus2004 55 seats
Republicans2002 51 seats
Republicans2000 99 seats
Democratic caucus1998 55 seats
Republicans1996 55 seats
Republicans1994 52 seats
Republicans1992 57 seats
Democratic caucus1990 56 seats
Democratic caucus1988 55 seats
Democratic caucus1986 55 seats
Democratic caucus1984 53 seats
Republicans1982 55 seats
Republicans1980 53 seats
Republicans1978 59 seats
Democratic caucus1976 62 seats
Democratic caucus1974 62 seats
Democratic caucus1972 57 seats
Democratic caucus1970 55 seats
Democratic caucus1968 57 seats
Democratic caucus1966 64 seats
Democratic caucus1964 68 seats
Democratic caucus1962 66 seats
Democratic caucus1960 64 seats
Democratic caucus1958 65 seats
Democratic caucus1956 49 seats
Democratic caucus1954 49 seats
Democratic caucus1952 48 seats
Democratic caucus1950 49 seats
Democratic caucus1948 54 seats
Democratic caucus1946 51 seats
Republicans1944 57 seats
Democratic caucus1942 57 seats
Democratic caucus1940 67 seats
Democratic caucus1938 70 seats
Democratic caucus1936 77 seats
Democratic caucus1934 69 seats
Democratic caucus1932 59 seats
Democratic caucus1930 48 seats
Republicans1928 56 seats
Republicans1926 48 seats
Republicans1924 54 seats
Republicans1922 53 seats
Republicans1920 59 seats
Republicans1918 49 seats
Republicans1916 54 seats
Democratic caucus1914 56 seats
Democratic caucus1912 51 seats
Democratic caucus1910 52 seats
Republicans1908 60 seats
Republicans1906 61 seats
Republicans1904 58 seats
Republicans1902 57 seats
Republicans1900 56 seats
Republicans1898 53 seats
Republicans1896 44 seats
Republicans1894 44 seats
Republicans1892 45 seats
Democratic caucus1890 47 seats
Republicans1888 51 seats
Republicans1886 39 seats
Republicans1884 42 seats
Republicans1882 38 seats
Republicans1880 38 seats
Democratic caucus1878 43 seats
Democratic caucus1876 40 seats
Republicans1874 46 seats
Republicans1872 47 seats
Republicans1870 56 seats
Republicans1868 62 seats
Republicans1866 57 seats
Republicans1864 39 seats
Republicans1862 33 seats
Republicans1860 31 seats
Republicans1858 38 seats
Democratic caucus1856 41 seats
Democratic caucus1854 39 seats
Democratic caucus1852 38 seats
Democratic caucus1850 36 seats
Democratic caucus1848 35 seats
Democratic caucus1846 38 seats
Democratic caucus1844 34 seats
Democratic caucus1842 29 seats
W Whigs
1840 29 seats
W Whigs
1838 30 seats
Democratic caucus1836 35 seats
Democratic caucus1834 26 seats
J Jacksonians
1832 26 seats
A Anti-Jacksonians
1830 24 seats
J Jacksonians
1828 25 seats
J Jacksonians
1826 27 seats
J Jacksonians
1824 26 seats
J Jacksonians
1822 48 seats
D Democratic-Republicans
1820 44 seats
D Democratic-Republicans
1818 37 seats
D Democratic-Republicans
1816 30 seats
D Democratic-Republicans
1814 26 seats
D Democratic-Republicans
1812 28 seats
D Democratic-Republicans
1810 30 seats
D Democratic-Republicans
1808 27 seats
D Democratic-Republicans
1806 28 seats
D Democratic-Republicans
1804 27 seats
D Democratic-Republicans
1802 25 seats
D Democratic-Republicans
1800 17 seats
D Democratic-Republicans
1798 22 seats
F Federalists
1796 22 seats
F Federalists
1794 21 seats
F Federalists
1792 16 seats
P Pro-Administration
1790 16 seats
P Pro-Administration
1788 18 seats
P Pro-Administration