The Senate numbers of the USA Congress 1789-2007.

The Senate numbers of the USA Congress 1789-2007. A Link to the numbers for the House, 1789-2007

1st Congress Senate numbers. 1789-1791
Party with a Senate Majority; Pro-Administration 18 seats
Minority Party; Anti-Administration 8 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 26
- -
2nd Congress Senate numbers. 1791-1793
Party with a Senate Majority; Pro-Administration 16 seats
Minority Party; Anti-Administration 13 seats
Other Parties combined total; 0
Vacant; 1 Total amount of possible voting senate seats on offer; 30
- -
3rd Congress Senate numbers. 1793-1795
Party with a Senate Majority; Pro-Administration 16 seats
Minority Party; Anti-Administration 14 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 30
- -
4th Congress Senate numbers. 1795-1797
Party with a Senate Majority; Federalist 21 seats
Minority Party; Jeffersonian Republican 11 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 32
- -
5th Congress Senate numbers. 1797-1799
Party with a Senate Majority; Federalist 22 seats
Minority Party; Republican 10 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 32
- -
6th Congress Senate numbers. 1799-1801
Party with a Senate Majority; Federalist 22 seats
Minority Party; Jeffersonian Republican 10 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 32
- -
7th Congress Senate numbers. 1801-1803
Party with a Senate Majority; Republican 17 seats
Minority Party; Federalist 15 seats
Other Parties combined total; 0
Vacant; 2
Total amount of possible voting senate seats on offer; 34
- -
8th Congress Senate numbers. 1803-1805
Party with a Senate Majority; Republican 25 seats
Minority Party; Federalist 9 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 34
- -
9th Congress Senate numbers. 1805-1807
Party with a Senate Majority; Republican 27 seats
Minority Party; Federalist 7 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 34
- -
10th Congress Senate numbers. 1807-1809
Party with a Senate Majority; Republican 28 seats
Minority Party; Federalist 6 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 34
- -
11th Congress Senate numbers. 1809-1811
Party with a Senate Majority; Republican 27 seats
Minority Party; Federalist 7 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 34
- -
12th Congress Senate numbers. 1811-1813
Party with a Senate Majority; Republican 30 seats
Minority Party; Federalist 6 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 36
- -
13th Congress Senate numbers. 1813-1815
Party with a Senate Majority; Republican 28 seats
Minority Party; Federalist 8 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 36
- -
14th Congress Senate numbers. 1815-1817
Party with a Senate Majority; Republican 26 seats
Minority Party; Federalist 12seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 38
- -
15th Congress Senate numbers. 1817-1819
Party with a Senate Majority; Republican 30 seats
Minority Party; Federalist 12 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 42
- -
16th Congress Senate numbers. 1819-1821
Party with a Senate Majority; Republican 37 seats
Minority Party; Federalist 9 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 46
- -
17th Congress Senate numbers. 1821-1823
Party with a Senate Majority; Republican 44 seats
Minority Party; Federalist 4 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 48
- -
18th Congress Senate numbers. 1823-1825
Party with a Senate Majority; Jackson & Crawford Republicans 31
Minority Party; Adams-Clay Republicans & Federalists 17
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 48
- -
19th Congress Senate numbers. 1825-1827
Party with a Senate Majority; Jacksonian 26 seats
Minority Party; Adams 22 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 48
- -
20th Congress Senate numbers. 1827-1829
Party with a Senate Majority; Jacksonian 27 seats
Minority Party; Adams 21 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 48
- -
21st Congress Senate numbers. 1829-1831
Party with a Senate Majority; Jacksonian 25 seats
Minority Party; Anti-Jackson 23 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 48
- -
22nd Congress Senate numbers. 1831-1833
Party with a Senate Majority; Jacksonian 24 seats
Minority Party; Anti-Jackson 22 seats
Other Parties combined total; 2 National Republican
Total amount of possible voting senate seats on offer; 48
- -
23rd Congress Senate numbers. 1833-1835
Party with a Senate Majority; Anti-Jackson 26 seats
Minority Party; Jacksonian 20 seats
Other Parties combined total; 2 National Republican
Total amount of possible voting senate seats on offer; 48
- -
24th Congress Senate numbers. 1835-1837
Party with a Senate Majority; Jacksonian 26 seats
Minority Party; Anti-Jackson 24 seats
Other Parties combined total; 2 National Republican
Total amount of possible voting senate seats on offer; 52
- -
25th Congress Senate numbers. 1837-1839
Party with a Senate Majority; Democrat 35 seats
Minority Party; Whig 17 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 52
- -
26th Congress Senate numbers. 1839-1841
Party with a Senate Majority; Democrat 30 seats
Minority Party; Whig 22 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 52
- -
27th Congress Senate numbers. 1841-1843
Party with a Senate Majority; Whig 29 seats
Minority Party; Democrat 22 seats
Other Parties combined total; 0
Vacant; 1
Total amount of possible voting senate seats on offer; 52
- -
28th Congress Senate numbers. 1843-1845
Party with a Senate Majority; Whig 29 seats
Minority Party; Democrat 23 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 52
- -
29th Congress Senate numbers. 1845-1847
Party with a Senate Majority; Democrat 34 seats
Minority Party; Whig 22 seats
Other Parties combined total; 0
Vacant; 2 Total amount of possible voting senate seats on offer; 58
- -
30th Congress Senate numbers. 1847-1849
Party with a Senate Majority; Democrat 38 seats
Minority Party; Whig 21 seats
Other Parties combined total; 1 Independent Democrat
Total amount of possible voting senate seats on offer; 60
- -
31st Congress Senate numbers. 1849-1851
Party with a Senate Majority; Democrat 35 seats
Minority Party; Whig 25 seats
Other Parties combined total; 2 Free Soiler
Total amount of possible voting senate seats on offer; 62
- -
32nd Congress Senate numbers. 1851-1853
Party with a Senate Majority; Democrat 36 seats
Minority Party; Whig 23 seats
Other Parties combined total; 3 Free Soiler
Total amount of possible voting senate seats on offer; 62
- -
33rd Congress Senate numbers. 1853-1855
Party with a Senate Majority; Democrat 38 seats
Minority Party; Whig 22 seats
Other Parties combined total; 2 Free Soiler
Total amount of possible voting senate seats on offer; 62
- -
34th Congress Senate numbers. 1855-1857
Party with a Senate Majority; Democrat 39 seats
Minority Party; Opposition 22 seats
Other Parties combined total; 1 American Party
Total amount of possible voting senate seats on offer; 62
- -
35th Congress Senate numbers. 1857-1859
Party with a Senate Majority; Democrat 41 seats
Minority Party; Republican 20 seats
Other Parties combined total; 5 American Party
Total amount of possible voting senate seats on offer; 66
- -
36th Congress Senate numbers. 1859-1861
Party with a Senate Majority; Democrat 38 seats
Minority Party; Republican 26 seats
Other Parties combined total; 2 American Party
Total amount of possible voting senate seats on offer; 66
- -
37th Congress Senate numbers. 1861-1863
Party with a Senate Majority; Republican 31 seats
Minority Party; Democrat 15 seats
Other Parties combined total; 3 Unionist
Vacant; 1 Total amount of possible voting senate seats on offer; 50
- -
38th Congress Senate numbers. 1863-1865
Party with a Senate Majority; Republican 33 seats
Minority Party; Democrat 10 seats
Other Parties combined total; 5 Unconditional Unionist; 4 Unionist
Total amount of possible voting senate seats on offer; 52
- -
39th Congress Senate numbers. 1865-1867
Party with a Senate Majority; Republican 39 seats
Minority Party; Democrat 11 seats
Other Parties combined total; 3 Unconditional Unionist; 1 Unionist
Total amount of possible voting senate seats on offer; 54
- -
40th Congress Senate numbers. 1867-1869
Party with a Senate Majority; Republican 57 seats
Minority Party; Democrat 9 seats
Other Parties combined total; 0
Vacant; 2 Total amount of possible voting senate seats on offer; 68
- -
41st Congress Senate numbers. 1869-1871
Party with a Senate Majority; Republican 62 seats
Minority Party; Democrat 12 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 74
- -
42nd Congress Senate numbers. 1871-1873
Party with a Senate Majority; Republican 56 seats
Minority Party; Democrat 17 seats
Other Parties combined total; 1 Liberal Republican
Total amount of possible voting senate seats on offer; 74
- -
43rd Congress Senate numbers. 1873-1875
Party with a Senate Majority; Republican 47 seats
Minority Party; Democrat 19 seats
Other Parties combined total; 7 Liberal Republican
Vacant; 1 Total amount of possible voting senate seats on offer; 74
- -
44th Congress Senate numbers. 1875-1877
Party with a Senate Majority; Republican 46 seats
Minority Party; Democrat 28 seats
Other Parties combined total; 1 Independent Republican
Vacant; 1 Total amount of possible voting senate seats on offer; 76
- -
45th Congress Senate numbers. 1877-1879
Party with a Senate Majority; Republican 40 seats
Minority Party; Democrat 35 seats
Other Parties combined total; 1 Independent
Total amount of possible voting senate seats on offer; 76
- -
46th Congress Senate numbers. 1879-1881
Party with a Senate Majority; Democrat 42 seats
Minority Party; Republican 33 seats
Other Parties combined total; 1 Independent
Total amount of possible voting senate seats on offer; 76
- -
47th Congress Senate numbers. 1881-1883
Party with a Senate Majority; Republican 37 seats
Minority Party; Democrat 37 seats
Other Parties combined total; 1 Independent; 1 Readjuster
Total amount of possible voting senate seats on offer; 76
- -
48th Congress Senate numbers. 1883-1885
Party with a Senate Majority; Republican 38 seats
Minority Party; Democrat 36 seats
Other Parties combined total; 2 Readjuster
Total amount of possible voting senate seats on offer; 76
- -
49th Congress Senate numbers. 1885-1887
Party with a Senate Majority; Republican 42 seats
Minority Party; Democrat 34 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 76
- -
50th Congress Senate numbers. 1887-1889
Party with a Senate Majority; Republican 39 seats
Minority Party; Democrat 37 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 76
- -
51st Congress Senate numbers. 1889-1891
Party with a Senate Majority; Republican 51 seats
Minority Party; Democrat 37 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 88
- -
52nd Congress Senate numbers. 1891-1893
Party with a Senate Majority; Republican 47 seats
Minority Party; Democrat 39 seats
Other Parties combined total; 2 Populist
Total amount of possible voting senate seats on offer; 88
- -
53rd Congress Senate numbers. 1893-1895
Party with a Senate Majority; Democrat 44 seats
Minority Party; Republican 40 seats
Other Parties combined total; 3 Populist; 1 Silver
Total amount of possible voting senate seats on offer; 88
- -
54th Congress Senate numbers. 1895-1897
Party with a Senate Majority; Republican 44 seats
Minority Party; Democrat 40 seats
Other Parties combined total; 4 Populist; 2 Silver
Total amount of possible voting senate seats on offer; 90
- -
55th Congress Senate numbers. 1897-1899
Party with a Senate Majority; Republican 44 seats
Minority Party; Democrat 34 seats
Other Parties combined total; 5 Populist; 5 Silver Republican; 2 Silver
Total amount of possible voting senate seats on offer; 90
- -
56th Congress Senate numbers. 1899-1901
Party with a Senate Majority; Republican 53 seats
Minority Party; Democrat 26 seats
Other Parties combined total; 5 Populist; 3 Silver Republican; 2 Silver
Vacant; 1
Total amount of possible voting senate seats on offer; 90
- -
57th Congress Senate numbers. 1901-1903
Party with a Senate Majority; Republican 56 seats
Minority Party; Democrat 32 seats
Other Parties combined total; 2 Populist
Total amount of possible voting senate seats on offer; 90
- -
58th Congress Senate numbers. 1903-1905
Party with a Senate Majority; Republican 57 seats
Minority Party; Democrat 33 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 90
- -
59th Congress Senate numbers. 1905-1907
Party with a Senate Majority; Republican 58 seats
Minority Party; Democrat 32 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 90
- -
60th Congress Senate numbers. 1907-1909
Party with a Senate Majority; Republican 61 seats
Minority Party; Democrat 31 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 92
- -
61st Congress Senate numbers. 1909-1911
Party with a Senate Majority; Republican 60 seats
Minority Party; Democrat 32 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 92
- -
62nd Congress Senate numbers. 1911-1913
Party with a Senate Majority; Republican 52 seats
Minority Party; Democrat 44 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 96
- -
63rd Congress Senate numbers. 1913-1915
Party with a Senate Majority; Democrat 51 seats
Minority Party; Republican 44 seats
Other Parties combined total; 1 Progressive
Total amount of possible voting senate seats on offer; 96
- -
64th Congress Senate numbers. 1915-1917
Party with a Senate Majority; Democrat 56 seats
Minority Party; Republican 40 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 96
- -
65th Congress Senate numbers. 1917-1919
Party with a Senate Majority; Democrat 54 seats
Minority Party; Republican 42 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 96
- -
66th Congress Senate numbers. 1919-1921
Party with a Senate Majority; Republican 49 seats
Minority Party; Democrat 47 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 96
- -
67th Congress Senate numbers. 1921-1923
Party with a Senate Majority; Republican 59 seats
Minority Party; Democrat 37 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 96
- -
68th Congress Senate numbers. 1923-1925
Party with a Senate Majority; Republican 53 seats
Minority Party; Democrat 42 seats
Other Parties combined total; 1 Farmer-Labor
Total amount of possible voting senate seats on offer; 96
- -
69th Congress Senate numbers. 1925-1927
Party with a Senate Majority; Republican 54 seats
Minority Party; Democrat 41 seats
Other Parties combined total; 1 Farmer-Labor
Total amount of possible voting senate seats on offer; 96
- -
70th Congress Senate numbers. 1927-1929
Party with a Senate Majority; Republican 48 seats
Minority Party; Democrat 46 seats
Other Parties combined total; 1 Farmer-Labor
Vacant; 1
Total amount of possible voting senate seats on offer; 96
- -
71st Congress Senate numbers. 1929-1931
Party with a Senate Majority; Republican 56 seats
Minority Party; Democrat 39 seats
Other Parties combined total; 1 Farmer-Labor
Total amount of possible voting senate seats on offer; 96
- -
72nd Congress Senate numbers. 1931-1933
Party with a Senate Majority; Republican 48 seats
Minority Party; Democrat 47 seats
Other Parties combined total; 1 Farmer-Labor
Total amount of possible voting senate seats on offer; 96
- -
73rd Congress Senate numbers. 1933-1935
Party with a Senate Majority; Democrat 59 seats
Minority Party; Republican 36 seats
Other Parties combined total; 1 Farmer-Labor
Total amount of possible voting senate seats on offer; 96
- -
74th Congress Senate numbers. 1935-1937
Party with a Senate Majority; Democrat 69 seats
Minority Party; Republican 25 seats
Other Parties combined total; 1 Farmer-Labor; 1 Progressive
Total amount of possible voting senate seats on offer; 96
- -
75th Congress Senate numbers. 1937-1939
Party with a Senate Majority; Democrat 76 seats
Minority Party; Republican 16 seats
Other Parties combined total; 2 Farmer-Labor; 1 Progressive; 1 Independent
Total amount of possible voting senate seats on offer; 96
- -
76th Congress Senate numbers. 1939-1941
Party with a Senate Majority; Democrat 69 seats
Minority Party; Republican 23 seats
Other Parties combined total; 2 Farmer-Labor; 1 Progressive; 1 Independent
Total amount of possible voting senate seats on offer; 96
- -
77th Congress Senate numbers. 1941-1943
Party with a Senate Majority; Democrat 66 seats
Minority Party; Republican 28 seats
Other Parties combined total; 1 Independent; 1 Progressive
Total amount of possible voting senate seats on offer; 96
- -
78th Congress Senate numbers. 1943-1945
Party with a Senate Majority; Democrat 57 seats
Minority Party; Republican 38 seats
Other Parties combined total; 1 Progressive
Total amount of possible voting senate seats on offer; 96
- -
79th Congress Senate numbers. 1945-1947
Party with a Senate Majority; Democrat 57 seats
Minority Party; Republican 38 seats
Other Parties combined total; 1 Progressive
Total amount of possible voting senate seats on offer; 96
- -
80th Congress Senate numbers. 1947-1949
Party with a Senate Majority; Republican 51 seats
Minority Party; Democrat 45 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 96
- -
81st Congress Senate numbers. 1949-1951
Party with a Senate Majority; Democrat 54 seats
Minority Party; Republican 42 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 96
- -
82nd Congress Senate numbers. 1951-1953
Party with a Senate Majority; Democrat 49 seats
Minority Party; Republican 47 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 96
- -
83rd Congress Senate numbers. 1953-1955
Party with a Senate Majority; Republican 48 seats
Minority Party; Democrat 47 seats
Other Parties combined total; 1 Independent
Total amount of possible voting senate seats on offer; 96
Note; Senate membership saw changes during this era.
- -
84th Congress Senate numbers. 1955-1957
Party with a Senate Majority; Democrat 48 seats
Minority Party; Republican 47 seats
Other Parties combined total; 1 Independent
Total amount of possible voting senate seats on offer; 96
Note; Strom Thurmond SC was an Independent Democrat during this Congress Senate numbers. until his resignation on April 4, 1956. In November of that year he was elected as a Democrat to fill the vacancy created by his resignation. The Independent member listed above was Wayne Morse OR , who changed from an Independent to a Democrat on February 17, 1955.
- -
85th Congress Senate numbers. 1957-1959
Party with a Senate Majority; Democrat 49 seats
Minority Party; Republican 47 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 96
- -
86th Congress Senate numbers. 1959-1961
Party with a Senate Majority; Democrat 65 seats
Minority Party; Republican 35 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
87th Congress Senate numbers. 1961-1963
Party with a Senate Majority; Democrat 64 seats
Minority Party; Republican 36 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
88th Congress Senate numbers. 1963-1965
Party with a Senate Majority; Democrat 66 seats
Minority Party; Republican 34 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
89th Congress Senate numbers. 1965-1967
Party with a Senate Majority; Democrat 68 seats
Minority Party; Republican 32 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
90th Congress Senate numbers. 1967-1969
Party with a Senate Majority; Democrat 64 seats
Minority Party; Republican 36 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
91st Congress Senate numbers. 1969-1971
Party with a Senate Majority; Democrat 57 seats
Minority Party; Republican 43 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
92nd Congress Senate numbers. 1971-1973
Party with a Senate Majority; Democrat 54 seats
Minority Party; Republican 44 seats
Other Parties combined total; 1 Conservative; 1 Independent
Total amount of possible voting senate seats on offer; 100
- -
93rd Congress Senate numbers. 1973-1975
Party with a Senate Majority; Democrat 56 seats
Minority Party; Republican 42 seats
Other Parties combined total; 1 Conservative; 1 Independent
Total amount of possible voting senate seats on offer; 100
- -
94th Congress Senate numbers. 1975-1977
Party with a Senate Majority; Democrat 60 seats
Minority Party; Republican 38 seats
Other Parties combined total; 1 Conservative; 1 Independent
Total amount of possible voting senate seats on offer; 100
- -
95th Congress Senate numbers. 1977-1979
Party with a Senate Majority; Democrat 61 seats
Minority Party; Republican 38 seats
Other Parties combined total; 1 Independent
Total amount of possible voting senate seats on offer; 100
- -
96th Congress Senate numbers. 1979-1981
Party with a Senate Majority; Democrat 58 seats
Minority Party; Republican 41 seats
Other Parties combined total; 1 Independent
Total amount of possible voting senate seats on offer; 100
- -
97th Congress Senate numbers. 1981-1983
Party with a Senate Majority; Republican 53 seats
Minority Party; Democrat 46 seats
Other Parties combined total; 1 Independent
Total amount of possible voting senate seats on offer; 100
- -
98th Congress Senate numbers. 1983-1985
Party with a Senate Majority; Republican 54 seats
Minority Party; Democrat 46 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
99th Congress Senate numbers. 1985-1987
Party with a Senate Majority; Republican 53 seats
Minority Party; Democrat 47 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
100th Congress Senate numbers. 1987-1989
Party with a Senate Majority; Democrat 55 seats
Minority Party; Republican 45 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
101st Congress Senate numbers. 1989-1991
Party with a Senate Majority; Democrat 55 seats
Minority Party; Republican 45 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
102nd Congress Senate numbers. 1991-1993
Party with a Senate Majority; Democrat 56 seats
Minority Party; Republican 44 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
103rd Congress Senate numbers. 1993-1995
Party with a Senate Majority; Democrat 57 seats
Minority Party; Republican 43 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
June 5 1993 election saw Republican elected in Texas making Party division become Democrats 56 Republicans 44,
- -
104th Congress Senate numbers. 1995-1997
Party with a Senate Majority; Republican 52 seats
Minority Party; Democrat 48 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
Became Republicans 53 Democrats 47 as a Alabaman changed from Democratic to Republican. Changed to Republicans 54 Democrats 46 on November 9, 1994 as a Colorado Senator changed from Democratic to Republican party. On March 3, 1995. When a Republican from Oregon quit, it became Republicans 53 Democrats 46, and 1 vacanct. A Democrat was elected for Oregon, making it Republicans 53 Democrats 47.
- -
105th Congress Senate numbers. 1997-1999
Party with a Senate Majority; Republican 55 seats
Minority Party; Democrat 45 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
- -
106th Congress Senate numbers. 1999-2001
Party with a Senate Majority; Republican 55 seats
Minority Party; Democrat 45 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
On July 13, 1999 a New Hampshire Republican changed to Independent. Then on November 1, 1999, rejoined the Republican Party. A Republican for Georgia, died on July 18, 2000, so it became Republicans 54 Democrats 46, the Democratic governor appointed a Democrat, making it 53-47 officially.
- -
107th Congress Senate numbers. 2001-2003
Party with a Senate Majority Jan 3-20, 2001 ; Democrat 50 seats
Minority Party; Republican 50 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
________
Party with a Senate Majority Jan 20-June 6, 2001 ; Republican 50 seats
Minority Party; Democrat 50 seats
Other Parties combined total; 0
Total amount of possible voting senate seats on offer; 100
______
Party with a Senate Majority June 6, 2001-November 12, 2002 -- ; Democrat 50 seats
Minority Party; Republican 49 seats
Other Parties combined total; 1
Total amount of possible voting senate seats on offer; 100
_____
Party with a Senate Majority November 12, 2002 - January 3, 2003 ; Republican 50 seats
Minority Party; Democrat 48 seats
Other Parties combined total; 2
Total amount of possible voting senate seats on offer; 100
In 3rd of January to 20th of January 2001, Democrats held a majority via the deciding vote of Democratic Vice President Al Gore. Then on January 20, 2001, Republican Vice President Richard Cheney held the deciding vote, giving the majority to the Republicans. On May 24, 2001, Republican Senator for Vermont switched from Republican to Independent, for June 6, 2001. he said he would caucus with Democrats, giving them a 1 seat lead. A Democratic Senator died on October 25, 2002, then a Independent was appointed for his role.
- -
108th Congress Senate numbers. 2003-2005
Party with a Senate Majority; Republican 51 seats
Minority Party; Democrat 48 seats
Other Parties combined total; Independent 1 seat
Total amount of possible voting senate seats on offer; 100
- -
109th Congress Senate numbers. 2005-2007
Party with a Senate Majority; Republican 55 seats
Minority Party; Democrat 44 seats
Other Parties combined total; Independent 1 seat
Total amount of possible voting senate seats on offer; 100

Get this fascinating Mousemat showing the story of the expansion of the USA across history

110th Congress Senate numbers. 2007-2009
Party with a Senate Majority; Democrat 49 seats
Minority Party; Republican 49 seats
Other Parties combined total; Independent 2 seats
Total amount of possible voting senate seats on offer; 100

As the 2 independents caucus with the Democrats this made a Democrat Majority. in effect 51 seats

111th Congress Senate numbers 2009-
Party with a Senate Majority; Democrats 57 seats
Minority Party; Republican 41 seats
Other Parties combined total; Independent 2 seats
Total amount of possible voting senate seats on offer; 100

As the 2 independents caucus with the Democrats this made a even larger Democrat Majority. in effect 59 seats

The Numbers in the House of Representatives from 1789-2007

The World's Most powerful countries in periods across Human History, like 1900, or 1800

A top 20, of the world's most powerful countries ever as in USA V Mongol Empire + it V Soviet Union

Here are some more sites, there are books & articles on the subjects in many internet places, or internet book shops, bookstores, at the bottom, are lists of which were the worst regimes of the past few centuries.