History / Congress
U.S. Senate seat, Montana (class 1)
17 members have held this seat since Jan 1, 1890. Now: Tim Sheehy R.
Holders
1711 D · 5 R · 1 SR
Longest tenure
18 yearsConrad Burns
Current
21 monthsTim Sheehy, since Jan 3, 2025
history/seat/mt-sen-1Every holder, newest first+17
Tim Sheehy R
Jan 3, 2025 – present · 21 months
Jon Tester D
Jan 4, 2007 – Jan 4, 2025 · 18 years
Conrad Burns R
Jan 3, 1989 – Jan 4, 2007 · 18 years
John Melcher D
Jan 4, 1977 – Jan 4, 1989 · 12 years
Michael Joseph Mansfield D
Jan 21, 1971 – Jan 4, 1977 · 6 years
Michael Joseph Mansfield D
Jan 7, 1959 – Jan 4, 1971 · 12 years
Michael Joseph Mansfield D
Jan 3, 1953 – Jan 4, 1959 · 6 years
Zales Nelson Ecton R
Jan 3, 1947 – Jan 4, 1953 · 6 years
Burton Kendall Wheeler D
Apr 15, 1929 – Jan 4, 1947 · 18 years
Burton Kendall Wheeler D
Dec 3, 1923 – Mar 4, 1929 · 5.3 years
Henry Lee Myers D
Apr 2, 1917 – Mar 4, 1923 · 5.9 years
Henry Lee Myers D
Apr 4, 1911 – Mar 4, 1917 · 5.9 years
Thomas Henry Carter R
Dec 4, 1905 – Mar 4, 1911 · 5.2 years
Paris Gibson D
Dec 2, 1901 – Mar 4, 1905 · 3.3 years
William Andrews Clark D
Dec 4, 1899 – Mar 4, 1901 · 15 months
Lee Mantle SR
Dec 2, 1895 – Mar 4, 1899 · 3.3 years
Wilbur Fiske Sanders R
Jan 1, 1890 – Mar 4, 1893 · 3.2 years
Dates are from the @unitedstates congress-legislators project. Consecutive terms of one person are merged.