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List of United States senators from Montana

Montana was admitted to the Union on November 8, 1889, and elects U.S. senators to classes 1 and 2. Its current U.S. senators are Republicans Steve Daines (serving since 2015) and Tim Sheehy (serving since 2025). Democrat Max Baucus is the state's longest serving senator, serving from 1978 to 2014.

List of senators

|- style="height:2em" | colspan=3 | Vacant | nowrap | Nov 8, 1889 –<br/>Jan 1, 1890 | Montana elected its first senators two months after admission to the Union. | rowspan=3 | 1 | rowspan=2 | rowspan=5 | 1 | Montana elected its first senators two months after admission to the Union. | nowrap | Nov 8, 1889 –<br/>Jan 2, 1890 | colspan=3 | Vacant

|- style="height:2em" ! rowspan=2 | 1 | rowspan=2 align=left | <br/>Wilbur F. Sanders<br /> | rowspan=2 | Republican | rowspan=2 nowrap | Jan 1, 1890 –<br/>Mar 3, 1893 | rowspan=2 | Elected in 1890.Lost re-election. | rowspan=4 | Elected in 1890.Retired. | rowspan=4 nowrap | Jan 2, 1890 –<br/>Mar 3, 1895 | rowspan=4 | Republican | rowspan=4 align=right | <br/>Thomas C. Power<br /> ! rowspan=4 | 1

|- style="height:2em" |

|- style="height:2em" | colspan=3 | Vacant | nowrap | Mar 3, 1893 –<br/>Jan 16, 1895 | Legislature failed to elect. | rowspan=4 | 2 | rowspan=2

|- style="height:2em" ! rowspan=3 | 2 | rowspan=3 align=left | <br/>Lee Mantle<br /> | rowspan=2 | Republican | rowspan=3 nowrap | Jan 16, 1895 –<br/>Mar 3, 1899 | rowspan=3 | Elected to finish vacant term.Lost renomination.

|- style="height:2em" | | rowspan=4 | 2 | rowspan=4 | Elected in Jan 1895.Lost re-election. | rowspan=4 nowrap | Mar 4, 1895 –<br/>Mar 3, 1901 | rowspan=4 | Republican | rowspan=4 align=right | <br/>Thomas H. Carter<br /> ! rowspan=4 | 2

|- style="height:2em" | | Silver<br/>Republican |

|- style="height:2em" ! 3 | align=left | <br/>William Clark<br /> | | Democratic | nowrap | Mar 4, 1899 –<br/>May 15, 1900 | Elected in 1899.Resigned to avoid claim of election fraud. | rowspan=5 | 3 | rowspan=2

|- style="height:2em" | rowspan=2 colspan=3 | Vacant | rowspan=2 nowrap | May 15, 1900 –<br/>Mar 7, 1901 | rowspan=2 | Clark was appointed to continue his term, but did not qualify.

|- style="height:2em" | rowspan=2 | rowspan=4 | 3 | rowspan=4 | Elected in 1901.Retired. | rowspan=4 nowrap | Mar 4, 1901 –<br/>Mar 3, 1907 | rowspan=4 | Democratic | rowspan=4 align=right | <br/>William Clark<br /> ! rowspan=4 | 3

|- style="height:2em" ! rowspan=2 | 4 | rowspan=2 align=left | <br/>Paris Gibson<br /> | rowspan=2 | Democratic | rowspan=2 nowrap | Mar 7, 1901 –<br/>Mar 3, 1905 | rowspan=2 | Elected to finish Clark's term.Retired.

|- style="height:2em" |

|- style="height:2em" ! rowspan=3 | 5 | rowspan=3 align=left | <br/>Thomas H. Carter<br /> | rowspan=3 | Republican | rowspan=3 nowrap | Mar 4, 1905 –<br/>Mar 3, 1911 | rowspan=3 | Elected Jan 16, 1905.Lost re-election. | rowspan=3 | 4 |

|- style="height:2em" | | rowspan=3 | 4 | rowspan=3 | Elected Jan 16, 1907.Lost re-election as a Progressive. | rowspan=3 nowrap | Mar 4, 1907 –<br/>Mar 3, 1913 | rowspan=3 | Republican | rowspan=3 align=right | <br/>Joseph M. Dixon<br /> ! rowspan=3 | 4

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|- style="height:2em" ! rowspan=6 | 6 | rowspan=6 align=left | <br/>Henry L. Myers<br /> | rowspan=6 | Democratic | rowspan=6 nowrap | Mar 4, 1911 –<br/>Mar 3, 1923 | rowspan=3 | Elected Mar 2, 1911. | rowspan=3 | 5 |

|- style="height:2em" | | rowspan=3 | 5 | rowspan=3 | Elected Jan 14, 1913. | rowspan=10 nowrap | Mar 4, 1913 –<br/>Mar 2, 1933 | rowspan=10 | Democratic | rowspan=10 align=right | <br/>Thomas J. Walsh<br /> ! rowspan=10 | 5

|- style="height:2em" |

|- style="height:2em" | rowspan=3 | Re-elected in 1916.Retired. | rowspan=3 | 6 |

|- style="height:2em" | | rowspan=3 | 6 | rowspan=3 | Re-elected in 1918.

|- style="height:2em" |

|- style="height:2em" ! rowspan=15 | 7 | rowspan=15 align=left | <br/>Burton K. Wheeler<br /> | rowspan=15 | Democratic | rowspan=15 nowrap | Mar 4, 1923 –<br/>Jan 3, 1947 | rowspan=3 | Elected in 1922. | rowspan=3 | 7 |

|- style="height:2em" | | rowspan=3 | 7 | rowspan=3 | Re-elected in 1924.

|- style="height:2em" |

|- style="height:2em" | rowspan=6 | Re-elected in 1928. | rowspan=6 | 8 |

|- style="height:2em" | rowspan=2 | rowspan=6 | 8 | Re-elected in 1930.Died.

|- style="height:2em" | rowspan=2 | &nbsp; | rowspan=2 nowrap | Mar 2, 1933 –<br/>Mar 13, 1933 | rowspan=2 colspan=3 | Vacant

|- style="height:2em" | rowspan=3

|- style="height:2em" | Appointed to continue Walsh's term.Lost nomination to finish Walsh's term. | nowrap | Mar 13, 1933 –<br/>Nov 6, 1934 | | Democratic | align=right | <br/>John E. Erickson<br /> ! 6

|- style="height:2em" | rowspan=2 | Elected to finish Walsh's term. | rowspan=14 nowrap | Nov 7, 1934 –<br/>Jan 3, 1961 | rowspan=14 | Democratic | rowspan=14 align=right | <br/>James E. Murray<br /> ! rowspan=14 | 7

|- style="height:2em" | rowspan=3 | Re-elected in 1934. | rowspan=3 | 9 |

|- style="height:2em" | | rowspan=3 | 9 | rowspan=3 | Re-elected in 1936.

|- style="height:2em" |

|- style="height:2em" | rowspan=3 | Re-elected in 1940.Lost renomination. | rowspan=3 | 10 |

|- style="height:2em" | | rowspan=3 | 10 | rowspan=3 | Re-elected in 1942.

|- style="height:2em" |

|- style="height:2em" ! rowspan=3 | 8 | rowspan=3 align=left | <br/>Zales Ecton<br /> | rowspan=3 | Republican | rowspan=3 nowrap | Jan 3, 1947 –<br/>Jan 3, 1953 | rowspan=3 | Elected in 1946.Lost re-election. | rowspan=3 | 11 |

|- style="height:2em" | | rowspan=3 | 11 | rowspan=3 | Re-elected in 1948.

|- style="height:2em" |

|- style="height:2em" ! rowspan=12 | 9 | rowspan=12 align=left | <br/>Mike Mansfield<br /> | rowspan=12 | Democratic | rowspan=12 nowrap | Jan 3, 1953 –<br/>Jan 3, 1977 | rowspan=3 | Elected in 1952. | rowspan=3 | 12 |

|- style="height:2em" | | rowspan=3 | 12 | rowspan=3 | Re-elected in 1954.Retired.

|- style="height:2em" |

|- style="height:2em" | rowspan=3 | Re-elected in 1958. | rowspan=3 | 13 |

|- style="height:2em" | | rowspan=3 | 13 | rowspan=3 | Elected in 1960. | rowspan=9 nowrap | Jan 3, 1961 –<br/>Jan 12, 1978 | rowspan=9 | Democratic | rowspan=9 align=right | <br/>Lee Metcalf<br /> ! rowspan=9 | 8

|- style="height:2em" |

|- style="height:2em" | rowspan=3 | Re-elected in 1964. | rowspan=3 | 14 |

|- style="height:2em" | | rowspan=3 | 14 | rowspan=3 | Re-elected in 1966.

|- style="height:2em" |

|- style="height:2em" | rowspan=3 | Re-elected in 1970.Retired. | rowspan=3 | 15 |

|- style="height:2em" | | rowspan=7 | 15 | rowspan=3 | Re-elected in 1972.Died.

|- style="height:2em" |

|- style="height:2em" ! rowspan=10 | 10 | rowspan=10 align=left | <br/>John Melcher<br /> | rowspan=10 | Democratic | rowspan=10 nowrap | Jan 3, 1977 –<br/>Jan 3, 1989 | rowspan=7 | Elected in 1976. | rowspan=7 | 16 | rowspan=5

|- style="height:2em" | &nbsp; | nowrap | Jan 12, 1978 –<br/>Jan 22, 1978 | colspan=3 | Vacant

|- style="height:2em" | Appointed to finish Metcalf's term.Lost nomination to full term.Resigned early to give successor preferential seniority. | nowrap | Jan 22, 1978 –<br/>Dec 14, 1978 | | Democratic | align=right | <br/>Paul G. Hatfield<br /> ! 9

|- style="height:2em" | &nbsp; | nowrap | Dec 14, 1978 –<br/>Dec 15, 1978 | colspan=3 | Vacant

|- style="height:2em" | Appointed early to finish Metcalf's term, having already been elected to the next term. | rowspan=19 nowrap | Dec 15, 1978 –<br/>Feb 6, 2014 | rowspan=19 | Democratic | rowspan=19 align=right | <br/>Max Baucus<br /> ! rowspan=19 | 10

|- style="height:2em" | | rowspan=3 | 16 | rowspan=3 | Elected in 1978.

|- style="height:2em" |

|- style="height:2em" | rowspan=3 | Re-elected in 1982.Lost re-election. | rowspan=3 | 17 |

|- style="height:2em" | | rowspan=3 | 17 | rowspan=3 | Re-elected in 1984.

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|- style="height:2em" ! rowspan=9 | 11 | rowspan=9 align=left | <br/>Conrad Burns<br /> | rowspan=9 | Republican | rowspan=9 nowrap | Jan 3, 1989 –<br/>Jan 3, 2007 | rowspan=3 | Elected in 1988. | rowspan=3 | 18 |

|- style="height:2em" | | rowspan=3 | 18 | rowspan=3 | Re-elected in 1990.

|- style="height:2em" |

|- style="height:2em" | rowspan=3 | Re-elected in 1994. | rowspan=3 | 19 |

|- style="height:2em" | | rowspan=3 | 19 | rowspan=3 | Re-elected in 1996.

|- style="height:2em" |

|- style="height:2em" | rowspan=3 | Re-elected in 2000.Lost re-election. | rowspan=3 | 20 |

|- style="height:2em" | | rowspan=3 | 20 | rowspan=3 | Re-elected in 2002.

|- style="height:2em" |

|- style="height:2em" ! rowspan=11 | 12 | rowspan=11 align=left | <br/>Jon Tester<br /> | rowspan=11 | Democratic | rowspan=11 nowrap | Jan 3, 2007 –<br/>Jan 3, 2025 | rowspan=3 | Elected in 2006. | rowspan=3 | 21 |

|- style="height:2em" | | rowspan=5 | 21 | rowspan=3 | Re-elected in 2008.Announced retirement, then resigned to become U.S. Ambassador to China.

|- style="height:2em" |

|- style="height:2em" | rowspan=5 | Re-elected in 2012. | rowspan=5 | 22 | rowspan=3

|- style="height:2em" | &nbsp; | nowrap | Feb 6, 2014 –<br/>Feb 9, 2014 | colspan=3 | Vacant

|- style="height:2em" | Appointed to finish Baucus's term.Ran for election to full term, but withdrew. | nowrap | Feb 9, 2014 –<br/>Jan 3, 2015 | | Democratic | align=right | <br/>John Walsh<br /> ! 11

|- style="height:2em" | | rowspan=3 | 22 | rowspan=3 | Elected in 2014. | rowspan=6 nowrap | Jan 3, 2015 –<br/>present | rowspan=6 | Republican | rowspan=6 align=right | <br/>Steve Daines<br /> ! rowspan=6 | 12

|- style="height:2em" |

|- style="height:2em" | rowspan=3 | Re-elected in 2018.Lost re-election. | rowspan=3 | 23 |

|- style="height:2em" | | rowspan=3 | 23 | rowspan=3 |Re-elected in 2020.Retiring at the end of term.

|- style="height:2em" |

|- style="height:2em" ! rowspan=3 | 13 | rowspan=3 align=left | <br/>Tim Sheehy<br /> | rowspan=3 | Republican | rowspan=3 nowrap | Jan 3, 2025 –<br/>present | rowspan=3| Elected in 2024. | rowspan=3| 24 |

|- style="height:2em" | | rowspan=3 | 24 | rowspan=3 colspan=5 | To be determined in the 2026 election.

|- style="height:2em" |

|- style="height:2em" | colspan=5 | To be determined in the 2030 election. | 25 |

See also

References