Montana was admitted to the Union on November 8, 1889, and elects senators to Classes 1 and 2. Its current senators are Democrats Max Baucus and Jon Tester.
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# | Senator | Party | Years | Congress | Term | Electoral history |
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1 | Wilbur F. Sanders | Republican | January 1, 1890 – March 3, 1893 |
51 | 1 | Elected in 1889 Lost re-election |
52 | ||||||
Vacant | March 3, 1893 – January 16, 1895 |
53 | 2 | Legislature failed to elect | ||
2 | Lee Mantle | Republican | January 16, 1895 – March 4, 1899 |
Appointed to fill vacant term Elected to finish vacant term Lost renomination |
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54 | ||||||
55 | ||||||
3 | William A. Clark | Democratic | March 4, 1899 – May 15, 1900 |
56 | 3 | Elected in 1899 Resigned to avoid claim of election fraud |
Vacant | May 15, 1900 – March 7, 1901 |
56 | Clark was appointed to continue his vacant term, but did not qualify |
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57 |
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4 | Paris Gibson | Democratic | March 7, 1901 – March 4, 1905 |
Elected to finish Clark's term[1][2] Retired |
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58 | ||||||
5 | Thomas H. Carter | Republican | March 4, 1905 – March 4, 1911 |
59 | 4 | Elected in 1904 Retired |
60 | ||||||
61 | ||||||
6 | Henry L. Myers | Democratic | March 4, 1911 – March 4, 1923 |
62 | 5 | Elected in 1910 |
63 | ||||||
64 | ||||||
65 | 6 | Re-elected in 1916 Retired |
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66 | ||||||
67 | ||||||
7 | Burton K. Wheeler | Democratic | March 4, 1923 – January 3, 1947 |
68 | 7 | Elected in 1922 |
69 | ||||||
70 | ||||||
71 | 8 | Re-elected in 1928 | ||||
72 | ||||||
73 | ||||||
74 | 9 | Re-elected in 1934 | ||||
75 | ||||||
76 | ||||||
77 | 10 | Re-elected in 1940 Lost renomination |
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78 | ||||||
79 | ||||||
8 | Zales Ecton | Republican | January 3, 1947 – January 3, 1953 |
80 | 11 | Elected in 1946 Lost re-election |
81 | ||||||
82 | ||||||
9 | Mike Mansfield | Democratic | January 3, 1953 – January 3, 1977 |
83 | 12 | Elected in 1952[3] |
84 | ||||||
85 | ||||||
86 | 13 | Re-elected in 1958 | ||||
87 | ||||||
88 | ||||||
89 | 14 | Re-elected in 1964 | ||||
90 | ||||||
91 | ||||||
92 | 15 | Re-elected in 1970 Retired |
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93 | ||||||
94 | ||||||
10 | John Melcher | Democratic | January 3, 1977 – January 3, 1989 |
95 | 16 | Elected in 1976 |
96 | ||||||
97 | ||||||
98 | 17 | Re-elected in 1982 Lost re-election |
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99 | ||||||
100 | ||||||
11 | Conrad Burns | Republican | January 3, 1989 – January 3, 2007 |
101 | 18 | Elected in 1988 |
102 | ||||||
103 | ||||||
104 | 19 | Re-elected in 1994 | ||||
105 | ||||||
106 | ||||||
107 | 20 | Re-elected in 2000 Lost re-election |
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108 | ||||||
109 | ||||||
12 | Jon Tester | Democratic | January 3, 2007 – Present |
110 | 21 | Elected in 2006 Incumbent |
111 | ||||||
112 | ||||||
# | Senator | Party | Years | Congress | Term | Electoral history |
# | Senator | Party | Years | Congress | Term | Electoral history |
---|---|---|---|---|---|---|
1 | Thomas C. Power | Republican | January 2, 1890 – March 4, 1895 |
51 | 1 | Elected in 1889 Retired |
52 | ||||||
53 | ||||||
2 | Thomas H. Carter | Republican | March 4, 1895 – March 4, 1901 |
54 | 2 | Elected in 1895 Retired |
55 | ||||||
56 | ||||||
3 | William A. Clark | Democratic | March 4, 1901 – March 3, 1907 |
57 | 3 | Elected in 1901 Retired |
58 | ||||||
59 | ||||||
4 | Joseph M. Dixon | Republican | March 4, 1907 – March 4, 1913 |
60 | 4 | Elected in 1907 Lost re-election |
61 | ||||||
62 | ||||||
5 | Thomas J. Walsh | Democratic | March 4, 1913 – March 2, 1933 |
63 | 5 | Elected in 1913 |
64 | ||||||
65 | ||||||
66 | 6 | Re-elected in 1918 | ||||
67 | ||||||
68 | ||||||
69 | 7 | Re-elected in 1924 | ||||
70 | ||||||
71 | ||||||
72 | 8 | Re-elected in 1930 Died[4] |
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Vacant | March 2, 1933 – March 13, 1933 |
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73 | ||||||
6 | John E. Erickson | Democratic | March 13, 1933 – November 6, 1934 |
Self-appointed to continue Walsh's term Lost nomination to finish Walsh's term |
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7 | James E. Murray | Democratic | November 7, 1934 – January 3, 1961 |
Elected to finish Walsh's term[5] | ||
74 | ||||||
75 | 9 | Elected to full term in 1936 | ||||
76 | ||||||
77 | ||||||
78 | 10 | Re-elected in 1942 | ||||
79 | ||||||
80 | ||||||
81 | 11 | Re-elected in 1948 | ||||
82 | ||||||
83 | ||||||
84 | 12 | Re-elected in 1954 Retired |
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85 | ||||||
86 | ||||||
8 | Lee Metcalf | Democratic | January 3, 1961 – January 12, 1978 |
87 | 13 | Elected in 1960[6] |
88 | ||||||
89 | ||||||
90 | 14 | Re-elected in 1966 | ||||
91 | ||||||
92 | ||||||
93 | 15 | Re-elected in 1972 Died |
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94 | ||||||
95 | ||||||
Vacant | January 12, 1978 – January 22, 1978 |
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9 | Paul G. Hatfield | Democratic | January 22, 1978 – December 12, 1978 |
Appointed to fill Metcalf's term Lost nomination to full term, then resigned early to give successor preferential seniority |
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Vacant | December 12, 1978 – December 15, 1978 |
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10 | Max Baucus | Democratic | December 15, 1978 – Present |
Appointed early to finish Hatfield's term, having already been elected to the next term[7] |
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96 | 16 | Elected in 1978 | ||||
97 | ||||||
98 | ||||||
99 | 17 | Re-elected in 1984 | ||||
100 | ||||||
101 | ||||||
102 | 18 | Re-elected in 1990 | ||||
103 | ||||||
104 | ||||||
105 | 19 | Re-elected in 1996 | ||||
106 | ||||||
107 | ||||||
108 | 20 | Re-elected in 2002 | ||||
109 | ||||||
110 | ||||||
111 | 21 | Re-elected in 2008 Incumbent |
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112 | ||||||
# | Senator | Party | Years | Congress | Term | Electoral history |
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