Class 1Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2000, 2006, 2012, and 2018. The next election will be in 2024.
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C
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Class 2Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026.
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#
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Senator
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Party
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Dates in office
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Electoral history
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T
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T
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Electoral history
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Dates in office
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Party
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Senator
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#
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1
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John Holmes
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Democratic- Republican
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Jun 13, 1820 – Mar 3, 1827
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Elected in 1820.
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1
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16th
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1
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Elected in 1820.
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Jun 14, 1820 – Mar 3, 1829
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Democratic- Republican
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John Chandler
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1
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Re-elected in 1821.
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2
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17th
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18th
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2
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Re-elected in 1823.Retired.
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National Republican
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19th
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Jacksonian
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2
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Albion Parris
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Jacksonian
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Mar 4, 1827 – Aug 26, 1828
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Elected in 1827.Resigned to become a judge on the Maine Supreme Judicial Court.
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3
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20th
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Vacant
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Aug 26, 1828 – Jan 15, 1829
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3
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John Holmes
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National Republican
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Jan 15, 1829 – Mar 3, 1833
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Elected to finish Parris's term.Retired.
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21st
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3
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Elected in 1829.Resigned.
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Mar 4, 1829 – Jan 1, 1835
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National Republican
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Peleg Sprague
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2
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22nd
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4
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Ether Shepley
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Jacksonian
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Mar 4, 1833 – Mar 3, 1836
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Elected in 1833.Resigned to become Justice of the Maine Supreme Judicial Court.
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4
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23rd
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Jan 1, 1835 – Jan 20, 1835
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Vacant
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Elected to finish Sprague's term, having already been elected to the next term.
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Jan 20, 1835 – Mar 3, 1841
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Jacksonian
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John Ruggles
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3
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24th
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4
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Elected in 1835.Lost re-election.
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5
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Judah Dana
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Jacksonian
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Mar 4, 1836 – Mar 3, 1837
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Appointed to continue Shepley's term.Either lost election to finish the term or retired when elected successor qualified.
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6
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Reuel Williams
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Democratic
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Mar 4, 1837 – Feb 15, 1843
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Elected to finish Shepley's term.
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25th
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Democratic
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Re-elected in 1839.Resigned.
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5
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26th
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27th
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5
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Elected in 1840.Lost re-election.
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Mar 4, 1841 – Mar 3, 1847
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Whig
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George Evans
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4
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Vacant
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Feb 15, 1843 – Dec 4, 1843
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28th
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7
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John Fairfield
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Democratic
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Dec 4, 1843 – Dec 24, 1847
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Elected to finish Williams's term.
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Re-elected in 1844 or 1845.Died.
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6
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29th
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30th
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6
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Elected in 1846.[1]Retired.
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Mar 4, 1847 – Mar 3, 1853
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Democratic
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James W. Bradbury
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5
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Vacant
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Dec 24, 1847 – Jan 5, 1848
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8
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Wyman B. S. Moor
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Democratic
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Jan 5, 1848 – June 7, 1848
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Appointed to continue Fairfield's term.Successor elected.
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9
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Hannibal Hamlin
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Democratic
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Jun 8, 1848 – Jan 7, 1857
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Elected to finish Fairfield's term.
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31st
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Re-elected in 1851.Changed parties in 1856.Resigned to become Governor of Maine.
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7
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32nd
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33rd
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7
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Legislature failed to elect.
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Mar 4, 1853 – Feb 10, 1854
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Vacant
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Elected to finish term.
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Feb 10, 1854 – Jul 1, 1864
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Whig
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William P. Fessenden
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6
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34th
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Republican
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Vacant
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Jan 7, 1857 – Jan 16, 1857
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10
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Amos Nourse
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Republican
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Jan 16, 1857 – Mar 3, 1857
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Elected to finish Hamlin's term.
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11
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Hannibal Hamlin
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Republican
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Mar 4, 1857 – Jan 17, 1861
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Elected in 1857.Resigned to become Vice President of the United States.
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8
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35th
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Republican
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36th
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8
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Re-elected in 1859.Resigned to become U.S. Secretary of the Treasury.
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12
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Lot M. Morrill
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Republican
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Jan 17, 1861 – Mar 3, 1869
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Elected to finish Hamlin's term.
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37th
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Re-elected in 1863.Lost re-election.
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9
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38th
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Jul 1, 1864 – Oct 27, 1864
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Vacant
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Appointed to continue Fessenden's term.Elected in 1865 to finish Fessenden's term.[2]Retired.
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Oct 27, 1864 – Mar 3, 1865
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Republican
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Nathan A. Farwell
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7
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39th
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9
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Elected in 1864 or 1865.Died.
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Mar 4, 1865 – Sep 8, 1869
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Republican
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William P. Fessenden
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8
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40th
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13
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Hannibal Hamlin
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Republican
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Mar 4, 1869 – Mar 3, 1881
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Elected in 1869.
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10
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41st
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Sep 8, 1869 – Oct 30, 1869
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Vacant
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Appointed to finish Fessenden's term.Elected in 1870 to finish Fessenden's term.[2]
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Oct 30, 1869 – Jul 7, 1876
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Republican
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Lot M. Morrill
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9
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42nd
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10
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Re-election year unknown.Resigned to become U.S. Secretary of the Treasury.
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43rd
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Re-elected in 1875.Retired.
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11
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44th
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Jul 7, 1876 – Jul 10, 1876
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Vacant
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Appointed to finish Morrill's term.Elected in 1877 to finish Morrill's term.[2]
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Jul 10, 1876 – Mar 5, 1881
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Republican
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James G. Blaine
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10
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45th
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11
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Elected to full term in 1877.Resigned to become U.S. Secretary of State.
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46th
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14
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Eugene Hale
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Republican
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Mar 4, 1881 – Mar 3, 1911
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Elected in 1881.
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12
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47th
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Mar 5, 1881 – Mar 18, 1881
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Vacant
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Elected to finish Blaine's term
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Mar 18, 1881 – Aug 8, 1911
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Republican
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William P. Frye
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11
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48th
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12
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Re-elected in 1883.
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49th
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Re-elected in 1887.
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13
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50th
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51st
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13
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Re-elected in 1889.
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52nd
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Re-elected in 1893.
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14
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53rd
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54th
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14
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Re-elected in 1895.
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55th
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Re-elected in 1899.
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15
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56th
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57th
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15
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Re-elected in 1901.
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58th
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Re-elected in 1905.Retired.
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16
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59th
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60th
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16
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Re-elected in 1907.Died.
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61st
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15
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Charles F. Johnson
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Democratic
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Mar 4, 1911 – Mar 3, 1917
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Elected in 1911.Lost re-election.
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17
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62nd
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Aug 8, 1911 – Sep 23, 1911
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Vacant
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Appointed to continue Frye's term.Elected in 1912 to finish Frye's term.[2]Lost re-election.
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Sep 23, 1911 – Mar 3, 1913
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Democratic
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Obadiah Gardner
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12
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63rd
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17
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Elected in 1913.Died.
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Mar 4, 1913 – Jun 16, 1916
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Republican
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Edwin C. Burleigh
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13
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64th
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Jun 16, 1916 – Sep 12, 1916
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Vacant
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Elected to finish Burleigh's term.
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Sep 12, 1916 – Aug 23, 1926
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Republican
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Bert M. Fernald
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14
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16
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Frederick Hale
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Republican
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Mar 4, 1917 – Jan 3, 1941
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Elected in 1916.
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18
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65th
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66th
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18
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Re-elected in 1918.
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67th
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Re-elected in 1922.
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19
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68th
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69th
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19
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Re-elected in 1924.Died.
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Aug 23, 1926 – Nov 30, 1926
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Vacant
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Elected to finish Fernald's term.Retired.
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Nov 30, 1926 – Mar 3, 1931
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Republican
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Arthur R. Gould
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15
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70th
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Re-elected in 1928.
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20
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71st
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72nd
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20
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Elected in 1930.
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Mar 4, 1931 – Jan 3, 1949
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Republican
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Wallace H. White
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16
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73rd
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Re-elected in 1934.Retired.
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21
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74th
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75th
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21
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Re-elected in 1936.
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76th
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17
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Owen Brewster
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Republican
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Jan 3, 1941 – Dec 31, 1952
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Elected in 1940.
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22
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77th
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78th
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22
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Re-elected in 1942.Retired.
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79th
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Re-elected in 1946.Resigned, having already lost renomination.
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23
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80th
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81st
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23
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Elected in 1948.
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Jan 3, 1949 – Jan 3, 1973
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Republican
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Margaret Chase Smith
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17
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82nd
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Vacant
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Dec 31, 1952 – Jan 3, 1953
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18
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Frederick G. Payne
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Republican
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Jan 3, 1953 – Jan 3, 1959
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Elected in 1952.Lost re-election.
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24
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83rd
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84th
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24
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Re-elected in 1954.
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85th
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19
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Edmund Muskie
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Democratic
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Jan 3, 1959 – May 7, 1980
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Elected in 1958.
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25
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86th
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87th
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25
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Re-elected in 1960.
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88th
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Re-elected in 1964.
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26
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89th
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90th
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26
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Re-elected in 1966.Lost re-election.
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91st
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Re-elected in 1970.
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27
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92nd
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93rd
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27
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Elected in 1972.Lost re-election.
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Jan 3, 1973 – Jan 3, 1979
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Democratic
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Bill Hathaway
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18
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94th
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Re-elected in 1976.Resigned to become U.S. Secretary of State.
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28
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95th
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96th
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28
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Elected in 1978.
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Jan 3, 1979 – Jan 3, 1997
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Republican
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William Cohen
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19
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Vacant
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May 7, 1980 – May 19, 1980
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20
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George J. Mitchell
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Democratic
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May 19, 1980 – Jan 3, 1995
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Appointed to finish Muskie's term.
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97th
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Elected to full term in 1982.[3]
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29
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98th
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99th
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29
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Re-elected in 1984.
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100th
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Re-elected in 1988.Retired.
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30
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101st
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102nd
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30
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Re-elected in 1990.Retired.
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103rd
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21
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Olympia Snowe
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Republican
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Jan 3, 1995 – Jan 3, 2013
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Elected in 1994.
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31
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104th
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105th
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31
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Elected in 1996.
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Jan 3, 1997 – present
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Republican
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Susan Collins
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20
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106th
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Re-elected in 2000.
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32
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107th
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108th
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32
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Re-elected in 2002.
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109th
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Re-elected in 2006.Retired.
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33
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110th
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111th
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33
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Re-elected in 2008.
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112th
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22
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Angus King
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Independent
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Jan 3, 2013 – present
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Elected in 2012.
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34
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113th
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114th
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34
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Re-elected in 2014.
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115th
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Re-elected in 2018.
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35
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116th
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117th
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35
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Re-elected in 2020.
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118th
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To be determined in the 2024 election.
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36
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119th
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120th
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36
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To be determined in the 2026 election.
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#
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Senator
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Party
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Years in office
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Electoral history
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T
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C
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T
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Electoral history
|
Years in office
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Party
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Senator
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#
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Class 1
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Class 2
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