List of United States Senate election results by region
The following table shows regularly-scheduled United States Senate elections by region. The table does not include appointments or special elections.
Legend
Label | Party | Label | Party | Label | Party | Label | Party | Label | Party | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PA | Pro-Administration Faction | AJ | Anti-Jacksonian | FS | Free Soil Party | SR | Silver Republican Party | — | No regularly-scheduled election | ||||
AA | Anti-Administration Faction | D | Democratic Party | A | American Party | FL | Farmer-Labor Party | I | Independent | ||||
F | Federalist Party | R | Republican Party | Po | Populist Party | Sp | Split result[1] | ||||||
DR | Democratic-Republican Party | Nu | Nullifier Party | U | Unionists[2] | ||||||||
J | Jacksonites | W | Whig Party | Ra | Readjuster Party |
Northeast
First Party System | Second Party System | Third Party System | Fourth Party System | Fifth Party System | Sixth Party System[3] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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State | 1789 | 1789 | 1790 | 1792 | 1794 | 1796 | 1798 | 1800 | 1802 | 1804 | 1806 | 1808 | 1810 | 1812 | 1814 | 1816 | 1818 | 1820 | 1822 | 1824 | 1826 | State | 1828 | 1830 | 1832 | 1834 | 1836 | 1838 | 1840 | 1842 | 1844 | 1846 | 1848 | 1850 | 1852 | 1854 | State | 1856 | 1858 | 1860 | 1862 | 1864 | 1866 | 1868 | 1870 | 1872 | 1874 | 1876 | 1878 | 1880 | 1882 | 1884 | 1886 | 1888 | 1890 | 1892 | 1894 | State | 1896 | 1898 | 1900 | 1902 | 1904 | 1906 | 1908 | 1910 | 1912 | 1914 | 1916 | 1918 | 1920 | 1922 | 1924 | 1926 | 1928 | 1930 | State | 1932 | 1934 | 1936 | 1938 | 1940 | 1942 | 1944 | 1946 | 1948 | 1950 | 1952 | 1954 | 1956 | 1958 | 1960 | 1962 | 1964 | 1966 | State | 1968 | 1970 | 1972 | 1974 | 1976 | 1978 | 1980 | 1982 | 1984 | 1986 | 1988 | 1990 | 1992 | 1994 | 1996 | 1998 | 2000 | 2002 | 2004 | 2006 | 2008 | 2010 | 2012 | 2014 | 2016 | 2018 | 2020 | State | |||||||
Connecticut | PA | PA | PA | — | F | F | — | F | F | — | F | F | — | F | F | — | DR | DR | — | AJ | AJ | Connecticut | — | AJ | AJ | — | D | W | — | D | W | — | W | D | — | R | Connecticut | R | — | R | R | — | R | R | — | LR | D | — | R | R | — | R | R | — | R | R | — | Connecticut | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | Connecticut | D | D | — | R | D | — | D | R | — | D | R | — | R | D | — | D | D | — | Connecticut | D | R | — | D | R | — | D | R | — | D | D | — | D | D | — | D | D | — | D | I | — | D | D | — | D | D | — | Connecticut | |||||||
Maine | Part of Massachusetts | Part of Massachusetts | 2DR | DR | — | J | Maine | AJ | — | D | D | — | D | W | — | D | D | — | D | W | — | Maine | D | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Maine | — | R | R | — | R | R | — | D | R | — | R | R | — | R | R | — | R | R | Maine | — | R | R | — | R | R | — | R | R | — | R | R | — | D | R | — | D | R | Maine | — | D | D | — | D | R | — | D | R | — | D | R | — | R | R | — | R | R | — | R | R | — | I | R | — | I | R | Maine | ||||||||||||||||||||||
Massachusetts | PA | PA | PA | PA | — | F | F | — | F | F | — | F | DR | — | F | F | — | F | F | — | AJ | Massachusetts | AJ | — | AJ | W | — | W | W | — | W | W | — | FS | W | — | Massachusetts | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Massachusetts | — | R | R | — | R | R | — | R | R | — | R | D | — | R | R | — | D | D | Massachusetts | — | D | R | — | D | R | — | R | R | — | D | R | — | D | R | — | D | R | Massachusetts | — | D | R | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Massachusetts | |||||||
New Hampshire | AA | AA | — | PA | DR | — | F | F | — | DR | DR | — | DR | F | — | DR | DR | — | DR | J | — | New Hampshire | AJ | D | — | D | D | — | D | D | — | FS | D | — | D | R | New Hampshire | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | New Hampshire | R | — | R | R | — | R | R | — | D | R | — | R | R | — | R | R | — | R | New Hampshire | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | D | New Hampshire | R | — | D | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | D | R | — | D | D | — | D | New Hampshire | |||||||
New Jersey | PA | PA | F | F | — | F | F | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | AJ | New Jersey | AJ | — | AJ | D | — | W | W | — | W | W | — | D | D | — | New Jersey | D | R | — | D | D | — | D | R | — | D | D | — | R | D | — | D | D | — | D | R | New Jersey | — | R | R | — | R | R | — | D | D | — | R | R | — | D | R | — | R | R | New Jersey | — | D | D | — | R | R | — | R | R | — | R | R | — | D | R | — | D | R | New Jersey | — | D | R | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | New Jersey | |||||||
New York | PA | PA | AA | — | F | F | — | DR | DR | — | DR | DR | — | F | DR | — | F | DR | — | AJ | J | New York | — | D | D | — | D | D | — | D | W | — | W | W | — | R | New York | R | — | R | R | — | R | R | — | R | D | — | R | R | — | R | R | — | D | D | — | New York | R | R | — | R | R | — | R | D | — | R | R | — | R | D | — | D | D | — | New York | D | D | — | D | D | — | D | R | — | D | R | — | R | R | — | R | D | — | New York | R | C | — | R | D | — | R | D | — | R | D | — | R | D | — | D | D | — | D | D | — | D | D | — | D | D | — | New York | |||||||
Pennsylvania | AA | PA | AA | — | F | F | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | AJ | J | Pennsylvania | — | D | D | — | D | D | — | D | D | — | W | D | — | D | Pennsylvania | R | — | R | D | — | R | R | — | R | D | — | R | R | — | R | R | — | R | R | — | Pennsylvania | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | Pennsylvania | R | D | — | R | D | — | D | R | — | R | R | — | D | R | — | D | R | — | Pennsylvania | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | D | — | R | D | — | R | D | — | Pennsylvania | |||||||
Rhode Island | PA | AA | PA | PA | — | F | F | — | DR | DR | — | F | DR | — | F | F | — | DR | DR | — | AJ | Rhode Island | AJ | — | AJ | W | — | W | W | — | W | W | — | D | D | — | Rhode Island | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Rhode Island | — | R | R | — | R | R | — | R | R | — | D | R | — | D | R | — | R | R | Rhode Island | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Rhode Island | — | D | D | — | R | D | — | R | D | — | R | D | — | R | D | — | R | D | — | D | D | — | D | D | — | D | D | Rhode Island | |||||||
Vermont | 2AA | — | F | F | — | F | DR | — | DR | DR | — | DR | F | — | DR | DR | — | AJ | AJ | Vermont | — | AJ | AJ | — | W | W | — | W | W | — | W | W | — | W | Vermont | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | Vermont | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | Vermont | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | Vermont | R | R | — | D | R | — | D | R | — | D | R | — | D | R | — | D | R | — | D | I | — | D | I | — | D | I | — | Vermont | |||||||||
State | 1st | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th | 11th | 12th | 13th | 14th | 15th | 16th | 17th | 18th | 19th | 20th | State | 21st | 22nd | 23rd | 24th | 25th | 26th | 27th | 28th | 29th | 30th | 31st | 32nd | 33rd | 34th | State | 35th | 36th | 37th | 38th | 39th | 40th | 41st | 42nd | 43rd | 44th | 45th | 46th | 47th | 48th | 49th | 50th | 51st | 52nd | 53rd | 54th | State | 55th | 56th | 57th | 58th | 59th | 60th | 61st | 62nd | 63rd | 64th | 65th | 66th | 67th | 68th | 69th | 70th | 71st | 72nd | State | 73rd | 74th | 75th | 76th | 77th | 78th | 79th | 80th | 81st | 82nd | 83rd | 84th | 85th | 86th | 87th | 88th | 89th | 90th | State | 91st | 92nd | 93rd | 94th | 95th | 96th | 97th | 98th | 99th | 100th | 101st | 102nd | 103rd | 104th | 105th | 106th | 107th | 108th | 109th | 110th | 111th | 112th | 113th | 114th | 115th | 116th | 117th | State |
South
First Party System | Second Party System | Third Party System | Civil War and Reconstruction | Third Party System | Fourth Party System | Fifth Party System | Sixth Party System[3] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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State | 1789 | 1789 | 1790 | 1792 | 1794 | 1796 | 1798 | 1800 | 1802 | 1804 | 1806 | 1808 | 1810 | 1812 | 1814 | 1816 | 1818 | 1820 | 1822 | 1824 | 1826 | State | 1828 | 1830 | 1832 | 1834 | 1836 | 1838 | 1840 | 1842 | 1844 | 1846 | 1848 | 1850 | 1852 | 1854 | State | 1856 | 1858 | 1860 | 1862 | 1864 | 1866 | 1868 | 1870 | 1872 | 1874 | 1876 | 1878 | 1880 | 1882 | 1884 | 1886 | 1888 | 1890 | 1892 | 1894 | State | 1896 | 1898 | 1900 | 1902 | 1904 | 1906 | 1908 | 1910 | 1912 | 1914 | 1916 | 1918 | 1920 | 1922 | 1924 | 1926 | 1928 | 1930 | State | 1932 | 1934 | 1936 | 1938 | 1940 | 1942 | 1944 | 1946 | 1948 | 1950 | 1952 | 1954 | 1956 | 1958 | 1960 | 1962 | 1964 | 1966 | State | 1968 | 1970 | 1972 | 1974 | 1976 | 1978 | 1980 | 1982 | 1984 | 1986 | 1988 | 1990 | 1992 | 1994 | 1996 | 1998 | 2000 | 2002 | 2004 | 2006 | 2008 | 2010 | 2012 | 2014 | 2016 | 2018 | 2020 | State | |||||||||
Alabama | 2DR | — | DR | J | — | Alabama | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Alabama | — | D | — | — | — | — | 2R | D | R | — | D | D | — | D | D | — | D | D | — | D | Alabama | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Alabama | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Alabama | D | — | D | D | — | D | R | — | D | D | — | D | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Alabama | |||||||||||||||||||||||||
Arkansas | Arkansas | 2D | — | D | D | — | D | D | — | D | D | Arkansas | — | D | D | — | — | — | 2R | R | R | — | D | D | — | D | D | — | D | D | — | D | Arkansas | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Arkansas | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Arkansas | D | — | D | D | — | D | D | — | D | D | — | D | D | — | R | D | — | D | D | — | D | R | — | R | R | — | R | Arkansas | ||||||||||||||||||||||||||||||||||
Delaware | PA | AA | PA | PA | — | F | F | — | F | F | — | F | F | — | F | F | — | F | F | — | J | Delaware | AJ | — | AJ | W | — | W | W | — | W | W | — | D | W | — | Delaware | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | R | — | D | D | Delaware | — | R | R | — | R | R | — | R | D | — | D | R | — | D | R | — | R | R | Delaware | — | R | D | — | D | R | — | R | D | — | R | D | — | R | R | — | R | R | Delaware | — | R | D | — | R | D | — | R | D | — | R | D | — | R | D | — | D | D | — | D | D | — | D | D | — | D | D | Delaware | |||||||||
Florida | Florida | 2D | — | W | D | — | D | Florida | D | — | — | — | — | — | 2R | — | R | D | — | D | D | — | D | D | — | D | D | — | Florida | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | Florida | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | Florida | R | D | — | D | D | — | R | D | — | D | R | — | D | R | — | D | D | — | R | D | — | R | D | — | R | R | — | Florida | ||||||||||||||||||||||||||||||||||||||
Georgia | AA | AA | — | AA | F | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | J | — | Georgia | D | D | — | D | D | — | W | D | — | W | W | — | D | D | Georgia | — | D | — | — | — | R | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Georgia | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Georgia | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Georgia | D | — | D | D | — | D | R | — | D | D | — | D | R | — | D | R | — | R | R | — | R | R | — | R | R | — | Georgia | ||||||||||
Kentucky | Part of Virginia | 2AA | F | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | J | — | Kentucky | D | AJ | — | W | W | — | W | W | — | W | W | — | W | W | Kentucky | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Kentucky | R | — | D | D | — | D | R | — | D | D | — | D | R | — | R | D | — | D | Kentucky | D | — | D | D | — | D | D | — | D | D | — | D | R | — | R | R | — | R | Kentucky | R | — | D | D | — | D | D | — | R | D | — | R | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Kentucky | |||||||||||
Louisiana | 2DR | — | DR | DR | — | DR | AJ | — | Louisiana | D | D | — | D | D | — | W | W | — | D | D | — | W | D | Louisiana | — | D | — | — | — | — | 2R | R | D | — | R | D | — | D | D | — | D | D | — | D | Louisiana | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Louisiana | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | Louisiana | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | R | — | D | R | — | R | R | — | R | Louisiana | ||||||||||||||||||||||
Maryland | PA | PA | PA | — | F | F | — | DR | DR | — | DR | DR | — | F | F | — | DR | DR | — | J | J | Maryland | — | AJ | AJ | — | W | W | — | W | W | — | W | W | — | W | Maryland | A | — | D | U | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | Maryland | R | R | — | D | D | — | D | D | — | D | R | — | R | D | — | D | R | — | Maryland | D | D | — | D | D | — | D | D | — | R | R | — | R | R | — | D | D | — | Maryland | R | R | — | R | D | — | R | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | Maryland | |||||||||
Mississippi | 2DR | — | DR | DR | — | J | Mississippi | D | — | AJ | D | — | W | D | — | D | D | — | D | D | — | Mississippi | D | D | — | — | — | — | — | 2R | — | R | D | — | D | D | — | D | D | — | D | D | Mississippi | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Mississippi | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Mississippi | — | D | D | — | D | R | — | D | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Mississippi | ||||||||||||||||||||||||
North Carolina | PA | PA | — | AA | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | J | — | North Carolina | D | D | — | D | D | — | W | D | — | W | W | — | D | D | North Carolina | — | D | D | — | — | — | 2R | D | D | — | D | D | — | D | D | — | D | D | — | Po | North Carolina | R | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | North Carolina | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | North Carolina | D | — | R | D | — | R | R | — | R | D | — | R | R | — | R | D | — | R | R | — | D | R | — | R | R | — | R | North Carolina | |||||||||
Oklahoma | Oklahoma | Oklahoma | Oklahoma | 2D | D | — | D | D | — | D | R | — | R | D | — | D | Oklahoma | D | — | D | D | — | R | D | — | D | D | — | D | D | — | D | D | — | D | Oklahoma | R | — | R | R | — | D | R | — | D | R | — | D | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Oklahoma | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
South Carolina | PA | PA | — | AA | F | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | J | — | South Carolina | D | Nu | — | Nu | W | — | D | D | — | D | D | — | D | D | South Carolina | — | D | — | — | — | — | 2R | R | R | — | D | D | — | D | D | — | D | D | — | D | South Carolina | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | South Carolina | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | R | South Carolina | D | — | R | D | — | R | D | — | R | D | — | R | D | — | R | D | — | R | R | — | R | R | — | R | R | — | R | South Carolina | |||||||||
Tennessee | 2DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | J | Tennessee | D | — | D | W | — | D | W | — | D | W | — | W | W | — | Tennessee | D | D | — | — | — | Sp | R | D | — | D | D | — | D | D | — | D | D | — | D | D | Tennessee | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Tennessee | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | R | Tennessee | — | R | R | — | D | R | — | D | D | — | D | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Tennessee | ||||||||||||||
Texas | Texas | 2D | — | D | D | — | Texas | D | D | — | — | — | — | — | 2R | — | D | D | — | D | D | — | D | D | — | D | D | Texas | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Texas | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | R | Texas | — | D | R | — | D | R | — | D | R | — | D | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Texas | |||||||||||||||||||||||||||||||||||||||
Virginia | AA | AA | AA | AA | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | DR | DR | — | J | Virginia | D | — | AJ | W | — | W | W | — | D | D | — | D | D | — | Virginia | D | D | — | U[4] | N[5] | — | — | Sp | — | D | D | — | Ra | Ra | — | D | D | — | D | D | Virginia | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Virginia | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Virginia | — | I | R | — | I | R | — | R | R | — | D | R | — | D | R | — | R | R | — | D | D | — | D | D | — | D | D | Virginia | |||||||||
West Virginia | Part of Virginia | Part of Virginia | West Virginia | Part of Virginia | West Virginia | 2U | R | — | R | D | — | D | D | — | D | D | — | D | D | — | D | R | West Virginia | — | R | R | — | R | R | — | D | R | — | R | R | — | D | R | — | R | D | West Virginia | — | D | D | — | D | R | — | D | D | — | D | D | — | D | D | — | D | D | West Virginia | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | R | — | D | R | West Virginia | ||||||||||||||||||||||||||||||||||||||||||||
State | 1st | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th | 11th | 12th | 13th | 14th | 15th | 16th | 17th | 18th | 19th | 20th | State | 21st | 22nd | 23rd | 24th | 25th | 26th | 27th | 28th | 29th | 30th | 31st | 32nd | 33rd | 34th | State | 35th | 36th | 37th | 38th | 39th | 40th | 41st | 42nd | 43rd | 44th | 45th | 46th | 47th | 48th | 49th | 50th | 51st | 52nd | 53rd | 54th | State | 55th | 56th | 57th | 58th | 59th | 60th | 61st | 62nd | 63rd | 64th | 65th | 66th | 67th | 68th | 69th | 70th | 71st | 72nd | State | 73rd | 74th | 75th | 76th | 77th | 78th | 79th | 80th | 81st | 82nd | 83rd | 84th | 85th | 86th | 87th | 88th | 89th | 90th | State | 91st | 92nd | 93rd | 94th | 95th | 96th | 97th | 98th | 99th | 100th | 101st | 102nd | 103rd | 104th | 105th | 106th | 107th | 108th | 109th | 110th | 111th | 112th | 113th | 114th | 115th | 116th | 117th | State |
Midwest
First Party System | Second Party System | Third Party System | Fourth Party System | Fifth Party System | Sixth Party System[3] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
State | 1802 | 1804 | 1806 | 1808 | 1810 | 1812 | 1814 | 1816 | 1818 | 1820 | 1822 | 1824 | 1826 | State | 1828 | 1830 | 1832 | 1834 | 1836 | 1838 | 1840 | 1842 | 1844 | 1846 | 1848 | 1850 | 1852 | 1854 | State | 1856 | 1858 | 1860 | 1862 | 1864 | 1866 | 1868 | 1870 | 1872 | 1874 | 1876 | 1878 | 1880 | 1882 | 1884 | 1886 | 1888 | 1890 | 1892 | 1894 | State | 1896 | 1898 | 1900 | 1902 | 1904 | 1906 | 1908 | 1910 | 1912 | 1914 | 1916 | 1918 | 1920 | 1922 | 1924 | 1926 | 1928 | 1930 | State | 1932 | 1934 | 1936 | 1938 | 1940 | 1942 | 1944 | 1946 | 1948 | 1950 | 1952 | 1954 | 1956 | 1958 | 1960 | 1962 | 1964 | 1966 | State | 1968 | 1970 | 1972 | 1974 | 1976 | 1978 | 1980 | 1982 | 1984 | 1986 | 1988 | 1990 | 1992 | 1994 | 1996 | 1998 | 2000 | 2002 | 2004 | 2006 | 2008 | 2010 | 2012 | 2014 | 2016 | 2018 | 2020 | State | ||||||
Illinois | 2DR | — | DR | J | — | Illinois | D | D | — | D | D | — | D | D | — | D | D | — | D | D | Illinois | — | D | R | — | R | R | — | R | R | — | I | R | — | R | R | — | R | D | — | R | Illinois | R | — | R | R | — | R | R | — | D | R | — | R | R | — | R | R | — | D | Illinois | D | — | D | D | — | R | D | — | D | R | — | D | R | — | D | R | — | R | Illinois | R | — | R | D | — | R | D | — | D | D | — | D | D | — | D | R | — | D | D | — | D | R | — | D | D | — | D | Illinois | ||||||||||||||
Indiana | 2DR | DR | DR | — | AJ | AJ | Indiana | — | AJ | D | — | W | W | — | D | D | — | D | D | — | D | Indiana | D | — | R | D | — | R | R | — | R | D | — | D | R | — | D | D | — | D | D | — | Indiana | R | R | — | R | R | — | D | D | — | D | R | — | R | D | — | R | R | — | Indiana | D | D | — | D | R | — | R | R | — | R | R | — | R | D | — | D | D | — | Indiana | D | D | — | D | R | — | R | R | — | R | R | — | R | R | — | D | R | — | D | R | — | R | D | — | R | R | — | Indiana | |||||||||||||
Iowa | Iowa | 2D | — | D | FS | Iowa | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Iowa | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Iowa | D | — | D | D | — | R | R | — | D | R | — | R | R | — | R | R | — | R | Iowa | D | — | D | D | — | R | R | — | D | R | — | D | R | — | D | R | — | D | R | — | D | R | — | R | R | — | R | Iowa | |||||||||||||||||||||||||||||
Kansas | Kansas | Kansas | 2R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Po | — | R | Kansas | Po | — | R | R | — | R | R | — | D | R | — | R | R | — | R | R | — | R | Kansas | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Kansas | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Kansas | |||||||||||||||||||||||||||||||||||
Michigan | Michigan | 2D | W | — | D | D | — | D | D | — | Michigan | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Michigan | — | R | R | — | R | R | — | R | R | — | R | R | — | D | R | — | R | R | Michigan | — | R | D | — | R | R | — | R | R | — | R | D | — | D | D | — | D | R | Michigan | — | D | R | — | D | D | — | D | D | — | D | D | — | R | D | — | D | D | — | D | D | — | D | D | — | D | D | Michigan | ||||||||||||||||||||||||
Minnesota | Minnesota | Minnesota | Sp[6] | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Minnesota | — | R | R | — | R | R | — | R | R | — | R | R | — | FL | R | — | FL | R | Minnesota | — | FL | FL | — | R | R | — | R | D | — | R | D | — | D | D | — | D | D | Minnesota | — | D | D | — | D | R | — | R | R | — | R | D | — | R | D | — | D | R | — | D | D | — | D | D | — | D | D | Minnesota | ||||||||||||||||||||||||||||||||||
Missouri | 2DR | — | AJ | J | Missouri | — | D | D | — | D | D | — | D | D | — | D | W | — | D | Missouri | D | — | D | U | — | R | R | — | D | D | — | D | D | — | D | D | — | D | D | — | Missouri | D | D | — | D | R | — | D | D | — | D | D | — | R | D | — | D | R | — | Missouri | D | D | — | D | D | — | R | R | — | D | D | — | D | D | — | D | D | — | Missouri | D | D | — | D | R | — | D | R | — | R | R | — | R | R | — | R | R | — | R | D | — | R | D | — | R | R | — | Missouri | |||||||||||||||
Nebraska | Nebraska | Nebraska | 2R | R | R | — | R | R | — | R | R | — | R | R | — | Po | R | Nebraska | — | R | R | — | R | R | — | D | R | — | D | R | — | R | R | — | R | R | Nebraska | — | D | I | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Nebraska | — | R | R | — | D | D | — | D | D | — | D | D | — | D | R | — | D | R | — | D | R | — | R | R | — | R | R | Nebraska | ||||||||||||||||||||||||||||||||||||||
North Dakota | North Dakota | North Dakota | 2R | R | D | — | North Dakota | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | North Dakota | R | R | — | R | R | — | D | R | — | R | R | — | R | R | — | R | D | — | North Dakota | R | D | — | R | D | — | R | D | — | D | D | — | D | D | — | D | D | — | D | D | — | R | D | — | R | R | — | North Dakota | |||||||||||||||||||||||||||||||||||||||||||||||||
Ohio | 2DR | — | DR | DR | — | DR | DR | — | DR | DR | — | AJ | AJ | Ohio | — | AJ | D | — | D | D | — | D | W | — | FS | W | — | D | Ohio | R | — | R | R | — | R | D | — | R | D | — | D | R | — | D | R | — | D | R | — | Ohio | R | R | — | R | R | — | R | D | — | R | D | — | R | R | — | R | R | — | Ohio | D | D | — | R | R | — | R | R | — | R | R | — | D | D | — | D | D | — | Ohio | R | R | — | D | D | — | D | D | — | D | D | — | D | R | — | R | R | — | R | D | — | R | D | — | R | D | — | Ohio | ||||||
South Dakota | South Dakota | South Dakota | 2R | I | — | R | South Dakota | Po | — | R | R | — | R | R | — | R | D | — | R | R | — | R | R | — | D | South Dakota | R | — | D | R | — | R | R | — | R | R | — | R | R | — | R | D | — | R | South Dakota | D | — | D | D | — | R | R | — | R | D | — | R | D | — | D | D | — | D | R | — | D | R | — | R | R | — | R | South Dakota | |||||||||||||||||||||||||||||||||||||||||||||||||
Wisconsin | Wisconsin | 2D | D | — | R | Wisconsin | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | D | D | — | Wisconsin | R | R | — | R | R | — | R | R | — | D | R | — | R | R | — | R | R | — | Wisconsin | D | Pr | — | R | R | — | R | R | — | R | R | — | R | D | — | D | D | — | Wisconsin | D | D | — | D | D | — | R | D | — | R | D | — | D | D | — | D | D | — | D | D | — | R | D | — | R | D | — | Wisconsin | |||||||||||||||||||||||||||||
State | 8th | 9th | 10th | 11th | 12th | 13th | 14th | 15th | 16th | 17th | 18th | 19th | 20th | State | 21st | 22nd | 23rd | 24th | 25th | 26th | 27th | 28th | 29th | 30th | 31st | 32nd | 33rd | 34th | State | 35th | 36th | 37th | 38th | 39th | 40th | 41st | 42nd | 43rd | 44th | 45th | 46th | 47th | 48th | 49th | 50th | 51st | 52nd | 53rd | 54th | State | 55th | 56th | 57th | 58th | 59th | 60th | 61st | 62nd | 63rd | 64th | 65th | 66th | 67th | 68th | 69th | 70th | 71st | 72nd | State | 73rd | 74th | 75th | 76th | 77th | 78th | 79th | 80th | 81st | 82nd | 83rd | 84th | 85th | 86th | 87th | 88th | 89th | 90th | State | 91st | 92nd | 93rd | 94th | 95th | 96th | 97th | 98th | 99th | 100th | 101st | 102nd | 103rd | 104th | 105th | 106th | 107th | 108th | 109th | 110th | 111th | 112th | 113th | 114th | 115th | 116th | 117th | State |
West
Second Party System | Third Party System | Fourth Party System | Fifth Party System | Sixth Party System[3] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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State | 1850 | 1852 | 1854 | 1856 | 1858 | 1860 | 1862 | 1864 | 1866 | 1868 | 1870 | 1872 | 1874 | 1876 | 1878 | 1880 | 1882 | 1884 | 1886 | 1888 | 1890 | 1892 | 1894 | State | 1896 | 1898 | 1900 | 1902 | 1904 | 1906 | 1908 | 1910 | 1912 | 1914 | 1916 | 1918 | 1920 | 1922 | 1924 | 1926 | 1928 | 1930 | State | 1932 | 1934 | 1936 | 1938 | 1940 | 1942 | 1944 | 1946 | 1948 | 1950 | 1952 | 1954 | 1956 | 1958 | 1960 | 1962 | 1964 | 1966 | State | 1968 | 1970 | 1972 | 1974 | 1976 | 1978 | 1980 | 1982 | 1984 | 1986 | 1988 | 1990 | 1992 | 1994 | 1996 | 1998 | 2000 | 2002 | 2004 | 2006 | 2008 | 2010 | 2012 | 2014 | 2016 | 2018 | 2020 | State | ||||
Alaska | Alaska | Alaska | 2D | D | D | — | D | Alaska | D | — | R | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | D | R | — | R | R | — | Alaska | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Arizona | Arizona | 2D | D | D | — | R | D | — | D | D | — | Arizona | D | D | — | D | D | — | D | D | — | D | R | — | D | R | — | D | R | — | Arizona | R | R | — | R | D | — | R | D | — | R | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | D | — | Arizona | |||||||||||||||||||||||||||||||||||
California | 2D | — | D | D | — | D | R | — | R | D | — | R | AM | — | D | R | — | R | D | — | R | D | — | California | R | R | — | R | R | — | R | R | — | D | R | — | R | R | — | R | R | — | California | D | R | — | D | R | — | D | R | — | R | R | — | R | D | — | R | R | — | California | D | D | — | D | R | — | D | R | — | D | R | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | California | ||||
Colorado | 2R | R | — | R | R | — | R | SR | — | R | Colorado | D | — | D | D | — | R | D | — | D | D | — | R | R | — | R | R | — | D | Colorado | D | — | D | D | — | D | R | — | D | R | — | R | D | — | R | R | — | R | Colorado | R | — | D | D | — | R | D | — | R | D | — | R | R | — | R | R | — | R | D | — | D | D | — | R | D | — | D | Colorado | |||||||||||||||||
Hawaii | Hawaii | Hawaii | Sp | — | R | R | — | Hawaii | D | R | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | — | Hawaii | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Idaho | 2R | — | R | Idaho | Po | — | SR | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Idaho | D | — | R | D | — | R | D | — | D | R | — | R | D | — | R | D | — | R | Idaho | D | — | R | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | Idaho | ||||||||||||||||||||||||
Montana | 2R | — | R | R | Montana | — | D | D | — | R | R | — | D | D | — | D | D | — | D | D | — | D | D | Montana | — | D | D | — | D | D | — | R | D | — | D | D | — | D | D | — | D | D | Montana | — | D | D | — | D | D | — | D | D | — | R | D | — | R | D | — | R | D | — | D | D | — | D | R | — | D | R | Montana | |||||||||||||||||||||||
Nevada | 2R | R | R | — | R | R | — | R | D | — | R | R | — | R | SR | — | Nevada | Si | SR | — | D | R | — | D | R | — | D | D | — | R | D | — | R | D | — | Nevada | D | D | — | D | D | — | D | R | — | D | R | — | D | D | — | D | D | — | Nevada | D | D | — | R | D | — | R | R | — | D | D | — | D | D | — | D | R | — | D | R | — | D | R | — | D | D | — | Nevada | |||||||||||
New Mexico | New Mexico | 2R | — | D | R | — | D | D | — | R | D | New Mexico | — | R | D | — | D | D | — | D | D | — | D | D | — | D | D | — | D | D | New Mexico | — | D | R | — | R | R | — | D | R | — | D | R | — | D | R | — | D | R | — | D | D | — | D | D | — | D | D | New Mexico | |||||||||||||||||||||||||||||||||||
Oregon | 2D | R | — | R | R | — | D | R | — | D | D | — | R | R | — | R | R | — | R | Oregon | R | — | R | R | — | R | D | — | D | D | — | R | R | — | R | R | — | R | Oregon | R | — | R | R | — | R | R | — | R | R | — | D | D | — | D | D | — | R | Oregon | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | D | — | R | D | — | D | D | — | D | D | — | D | Oregon | ||||||||
Utah | Utah | Sp[7] | R | — | R | R | — | R | R | — | R | D | — | R | D | — | R | D | — | Utah | D | D | — | D | D | — | D | R | — | R | R | — | R | D | — | R | D | — | Utah | R | D | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | Utah | |||||||||||||||||||||||||||
Washington | 2R | R | R | — | Washington | R | R | — | R | R | — | R | R | — | R | R | — | R | D | — | R | D | — | Washington | D | D | — | D | D | — | D | R | — | D | D | — | D | D | — | D | D | — | Washington | D | D | — | D | D | — | R | D | — | D | R | — | D | R | — | D | D | — | D | D | — | D | D | — | D | D | — | Washington | |||||||||||||||||||||||
Wyoming | 2R | R | R | Wyoming | — | R | R | — | R | R | — | R | R | — | D | R | — | D | R | — | D | R | Wyoming | — | D | D | — | D | R | — | D | D | — | R | D | — | D | R | — | D | R | Wyoming | — | D | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | — | R | R | Wyoming | ||||||||||||||||||||||||
State | 32nd | 33rd | 34th | 35th | 36th | 37th | 38th | 39th | 40th | 41st | 42nd | 43rd | 44th | 45th | 46th | 47th | 48th | 49th | 50th | 51st | 52nd | 53rd | 54th | State | 55th | 56th | 57th | 58th | 59th | 60th | 61st | 62nd | 63rd | 64th | 65th | 66th | 67th | 68th | 69th | 70th | 71st | 72nd | State | 73rd | 74th | 75th | 76th | 77th | 78th | 79th | 80th | 81st | 82nd | 83rd | 84th | 85th | 86th | 87th | 88th | 89th | 90th | State | 91st | 92nd | 93rd | 94th | 95th | 96th | 97th | 98th | 99th | 100th | 101st | 102nd | 103rd | 104th | 105th | 106th | 107th | 108th | 109th | 110th | 111th | 112th | 113th | 114th | 115th | 116th | 117th | State |
See also
- List of United States presidential election results by state
- Party divisions of United States Congresses
- List of special elections to the United States Senate
References
- Martis, Kenneth C. The Historical Atlas of Political Parties in the United States Congress.
Notes
- ^ Candidates from two different parties were elected. This occasionally occurred when a state delegation was first admitted or re-admitted to the Senate. Unless otherwise noted, the split was between the Republican and Democratic parties.
- ^ Includes members of the Unconditional Union Party and other candidates elected under the "unionist" label.
- ^ a b c d There is no consensus definition for the beginning or ending date of the Sixth Party System.
- ^ Elected by the Restored Government of Virginia.
- ^ The Virginia legislature elected two Unionists in 1865, but the Senate refused to seat either candidate.
- ^ Two Democrats were elected in 1858, but a Republican replaced one of the Democrats in an 1859 election.
- ^ Two Republicans were elected in 1896, but a Democrat replaced a Republican in an 1897 election.
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