| Class 1Class 1 U.S. senators belong to the electoral cycle that has recently been contested in 2012, 2010 (special election), 2018, and 2024. The next election will be in 2030. |
C |
Class 2Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2008, 2013 (special election), 2014, and 2020. The next election will be in 2026. |
| # |
Senator |
Party |
Dates in office |
Electoral history |
T |
T |
Electoral history |
Dates in office |
Party |
Senator |
# |
| 1 |
 Tristram Dalton |
Pro- Admin. |
Mar 4, 1789 – Mar 3, 1791 |
Elected in 1788.Lost re-election. |
1 |
1st |
1 |
Elected in 1788. |
Mar 4, 1789 – Jun 1, 1796 |
Pro- Admin. |
 Caleb Strong |
1 |
| 2 |
 George Cabot |
Pro- Admin. |
Mar 4, 1791 – Jun 9, 1796 |
Elected in 1790.Resigned. |
2 |
2nd |
| 3rd |
2 |
Re-elected in 1793.Resigned. |
| Federalist |
4th |
Federalist |
| Vacant |
Jun 9, 1796 – Jun 11, 1796 |
Vacant |
Vacant |
Jun 1, 1796 – Jun 11, 1796 |
Vacant |
| 3 |
 Benjamin Goodhue |
Federalist |
Jun 11, 1796 – Nov 8, 1800 |
Elected to finish Cabot's term. |
Elected to finish Strong's term.Retired to run for the U.S. House of Representatives. |
Jun 11, 1796 – Mar 3, 1799 |
Federalist |
 Theodore Sedgwick |
2 |
| Also elected to full term in 1796.Resigned. |
3 |
5th |
| 6th |
3 |
Elected in 1798.[7]Resigned to become U.S. Secretary of War. |
Mar 4, 1799 – May 30, 1800 |
Federalist |
 Samuel Dexter |
3 |
| Vacant |
May 31, 1800 – Jun 5, 1800 |
Vacant |
| Elected to finish Dexter's term.[8]Resigned. |
Jun 6, 1800 – Mar 3, 1803 |
Federalist |
 Dwight Foster |
4 |
| Vacant |
Nov 8, 1800 – Nov 14, 1800 |
Vacant |
| 4 |
 Jonathan Mason |
Federalist |
Nov 14, 1800 – Mar 3, 1803 |
Elected to finish Goodhue's term. |
| 7th |
| Vacant |
Mar 2, 1803 – Mar 3, 1803 |
Vacant |
| 5 |
 John Quincy Adams |
Federalist |
Mar 4, 1803 – Jun 8, 1808 |
Elected in 1803.[9]Resigned, having lost re-election to the next term. |
4 |
8th |
Elected to finish Dexter's term. |
Mar 4, 1803 – Mar 3, 1811 |
Federalist |
 Timothy Pickering |
5 |
| 9th |
4 |
Re-elected in 1805.[10]Lost re-election. |
| 10th |
| 6 |
 James Lloyd |
Federalist |
Jun 9, 1808 – May 1, 1813 |
Elected to finish Adams's term, having already been elected to the next term. |
| Elected in 1808.[11]Resigned. |
5 |
11th |
| 12th |
5 |
State Senate failed to elect. |
Mar 4, 1811 – Jun 28, 1811 |
Vacant |
| Elected in 1811, to finish the vacant term.Retired or lost re-election. |
Jun 29, 1811 – Mar 3, 1817 |
Democratic- Republican |
 Joseph Bradley Varnum |
6 |
| 13th |
| Vacant |
May 1, 1813 – May 5, 1813 |
Vacant |
| 7 |
 Christopher Gore |
Federalist |
May 5, 1813 – May 30, 1816 |
Appointed to finish Lloyd's term. |
| Elected to full term in 1815.Resigned. |
6 |
14th |
| Vacant |
May 31, 1816 – Jun 11, 1816 |
Vacant |
| 8 |
Eli P. Ashmun |
Federalist |
Jun 12, 1816 – May 10, 1818 |
Elected to finish Gore's term.Resigned. |
| 15th |
6 |
Elected in 1816.Resigned to run for Mayor of Boston. |
Mar 4, 1817 – May 30, 1822 |
Federalist |
 Harrison Gray Otis |
7 |
| Vacant |
May 11, 1818 – Jun 4, 1818 |
Vacant |
| 9 |
 Prentiss Mellen |
Federalist |
Jun 5, 1818 – May 15, 1820 |
Elected to finish Gore's term.Resigned to become Chief Justice of Maine. |
| 16th |
| Vacant |
May 16, 1820 – Jun 12, 1820 |
Vacant |
| 10 |
 Elijah H. Mills |
Federalist |
Jun 12, 1820 – Mar 3, 1827 |
Elected to finish Gore's term. |
| Re-elected in 1820.Lost re-election in 1826. |
7 |
17th |
| Vacant |
May 30, 1822 – Jun 5, 1822 |
Vacant |
| Elected to finish Otis's term. |
Jun 5, 1822 – May 23, 1826 |
Federalist |
 James Lloyd |
8 |
| 18th |
7 |
Re-elected in 1822.Resigned. |
National Republican |
19th |
National Republican |
| Vacant |
May 23, 1826 – May 31, 1826 |
Vacant |
| Elected to finish Lloyd's term. |
May 31, 1826 – Mar 3, 1835 |
National Republican |
 Nathaniel Silsbee |
9 |
| Vacant |
Mar 4, 1827 – Jun 8, 1827 |
Vacant |
8 |
20th |
| 11 |
 Daniel Webster |
National Republican |
Jun 8, 1827 – Feb 22, 1841 |
Elected late in 1827. |
| 21st |
8 |
Re-elected in 1828.Retired. |
| 22nd |
| Re-elected in 1833. |
9 |
23rd |
| 24th |
9 |
Elected in 1835.Resigned to become Governor of Massachusetts. |
Mar 4, 1835 – Jan 5, 1841 |
National Republican |
 John Davis |
10 |
| Whig |
25th |
Whig |
| Re-elected in 1839.Resigned to become U.S. Secretary of State. |
10 |
26th |
| Vacant |
Jan 5, 1841 – Jan 13, 1841 |
Vacant |
| Elected to finish Davis's term. |
Jan 13, 1841 – Mar 16, 1845 |
Whig |
 Isaac C. Bates |
11 |
| 12 |
 Rufus Choate |
Whig |
Feb 23, 1841 – Mar 3, 1845 |
Elected to finish Webster's term.Retired. |
| 27th |
10 |
Elected to full term in 1841.Died. |
| 28th |
| 13 |
 Daniel Webster |
Whig |
Mar 4, 1845 – Jul 22, 1850 |
Elected in 1845.Resigned to become U.S. Secretary of State again. |
11 |
29th |
| Vacant |
Mar 16, 1845 – Mar 24, 1845 |
Vacant |
| Elected to finish Bates's term. |
Mar 24, 1845 – Mar 3, 1853 |
Whig |
 John Davis |
12 |
| 30th |
11 |
Re-elected in 1847.Retired. |
| 31st |
| Vacant |
Jul 23, 1850 – Jul 30, 1850 |
Vacant |
| 14 |
 Robert C. Winthrop |
Whig |
Jul 30, 1850 – Feb 1, 1851 |
Appointed to continue Webster's term.Lost election to finish Webster's term. |
| 15 |
 Robert Rantoul Jr. |
Democratic |
Feb 1, 1851 – Mar 3, 1851 |
Elected to finish Webster's term.Retired. |
| Vacant |
Mar 4, 1851 – Apr 24, 1851 |
Elected late after the state legislature deadlocked on Daniel Webster's successor |
12 |
32nd |
| 16 |
 Charles Sumner |
Free Soil |
Apr 24, 1851 – Mar 11, 1874 |
| 33rd |
12 |
Elected in 1853.Resigned. |
Mar 4, 1853 – Jun 1, 1854 |
Whig |
 Edward Everett |
13 |
| Vacant |
Jun 1, 1854 – Jun 3, 1854 |
Vacant |
| Appointed to continue Everett's term.Successor was elected. |
Jun 3, 1854 – Jan 31, 1855 |
Whig |
 Julius Rockwell |
14 |
| Elected to finish Everett's term. |
Jan 31, 1855 – Mar 3, 1873 |
Know Nothing |
 Henry Wilson |
15 |
| 34th |
Republican |
| Republican |
Re-elected in 1857. |
13 |
35th |
| 36th |
13 |
Re-elected in 1859. |
| 37th |
| Re-elected in 1863. |
14 |
38th |
| 39th |
14 |
Re-elected in 1865. |
| 40th |
| Re-elected in 1869.Died. |
15 |
41st |
| 42nd |
15 |
Re-elected in 1871.Resigned to become the Vice President of the United States. |
| Liberal Republican |
43rd |
Vacant |
Mar 3, 1873 – Mar 17, 1873 |
Vacant |
| Elected to finish Wilson's term.Lost renomination. |
Mar 17, 1873 – Mar 3, 1877 |
Republican |
 George S. Boutwell |
16 |
| Vacant |
Mar 12, 1874 – Apr 16, 1874 |
Vacant |
| 17 |
 William B. Washburn |
Republican |
Apr 17, 1874 – Mar 3, 1875 |
Elected to finish Sumner's term.Retired. |
| 18 |
 Henry L. Dawes |
Republican |
Mar 4, 1875 – Mar 3, 1893 |
Elected in 1875. |
16 |
44th |
| 45th |
16 |
Elected in 1877. |
Mar 4, 1877 – Sep 30, 1904 |
Republican |
 George F. Hoar |
17 |
| 46th |
| Re-elected in 1881. |
17 |
47th |
| 48th |
17 |
Re-elected in 1883. |
| 49th |
| Re-elected in 1887.Retired. |
18 |
50th |
| 51st |
18 |
Re-elected in 1889. |
| 52nd |
| 19 |
 Henry Cabot Lodge |
Republican |
Mar 4, 1893 – Nov 9, 1924 |
Elected in 1893. |
19 |
53rd |
| 54th |
19 |
Re-elected in 1895. |
| 55th |
| Re-elected in 1899. |
20 |
56th |
| 57th |
20 |
Re-elected in 1901.Died. |
| 58th |
| Vacant |
Sep 30, 1904 – Oct 12, 1904 |
Vacant |
| Appointed to continue Hoar's term.Elected to finish Hoar's term.[12] |
Oct 12, 1904 – Mar 3, 1913 |
Republican |
 Winthrop M. Crane |
18 |
| Re-elected in 1905.[12] |
21 |
59th |
| 60th |
21 |
Re-elected in 1907.Retired. |
| 61st |
| Re-elected in 1911. |
22 |
62nd |
| 63rd |
22 |
Elected in 1913.Lost re-election. |
Mar 4, 1913 – Mar 3, 1919 |
Republican |
 John W. Weeks |
19 |
| 64th |
| Re-elected in 1916. |
23 |
65th |
| 66th |
23 |
Elected in 1918.Lost re-election. |
Mar 4, 1919 – Mar 3, 1925 |
Democratic |
 David I. Walsh |
20 |
| 67th |
| Re-elected in 1922.Died. |
24 |
68th |
| Vacant |
Nov 9, 1924 – Nov 13, 1924 |
Vacant |
| 20 |
 William M. Butler |
Republican |
Nov 13, 1924 – Dec 6, 1926 |
Appointed to continue Lodge's term.Lost election to finish Lodge's term. |
| 69th |
24 |
Elected in 1924.Retired. |
Mar 4, 1925 – Mar 3, 1931 |
Republican |
 Frederick H. Gillett |
21 |
| 21 |
 David I. Walsh |
Democratic |
Dec 6, 1926 – Jan 3, 1947 |
Elected to finish Lodge's term. |
| 70th |
| Re-elected in 1928. |
25 |
71st |
| 72nd |
25 |
Elected in 1930.Retired. |
Mar 4, 1931 – Jan 3, 1937 |
Democratic |
 Marcus A. Coolidge |
22 |
| 73rd |
| Re-elected in 1934. |
26 |
74th |
| 75th |
26 |
Elected in 1936. |
Jan 3, 1937 – Feb 3, 1944 |
Republican |
 Henry Cabot Lodge Jr. |
23 |
| 76th |
| Re-elected in 1940.Lost re-election. |
27 |
77th |
| 78th |
27 |
Re-elected in 1942.Resigned to return to active duty in the U.S. Army. |
| Vacant |
Feb 4, 1944 – Feb 7, 1944 |
Vacant |
| Appointed to continue Lodge's term.Did not run for election to finish the term. |
Feb 8, 1944 – Dec 19, 1944 |
Republican |
 Sinclair Weeks |
24 |
| Elected to finish Lodge's term.Didn't take seat until Jan 4, 1945 in order to remain Governor of Massachusetts. |
Dec 19, 1944 – Jan 3, 1967 |
Republican |
 Leverett Saltonstall |
25 |
| 79th |
| 22 |
 Henry Cabot Lodge Jr. |
Republican |
Jan 3, 1947 – Jan 3, 1953 |
Elected in 1946.Lost re-election. |
28 |
80th |
| 81st |
28 |
Re-elected in 1948. |
| 82nd |
| 23 |
 John F. Kennedy |
Democratic |
Jan 3, 1953 – Dec 22, 1960 |
Elected in 1952. |
29 |
83rd |
| 84th |
29 |
Re-elected in 1954. |
| 85th |
| Re-elected in 1958.Resigned to become U.S. President. |
30 |
86th |
| Vacant |
Dec 22, 1960 – Dec 27, 1960 |
Vacant |
| 24 |
 Benjamin Smith |
Democratic |
Dec 27, 1960 – Nov 7, 1962 |
Appointed to continue John Kennedy's term.Did not run for election to finish the term. |
| 87th |
30 |
Re-elected in 1960.Retired. |
| 25 |
Ted Kennedy |
Democratic |
Nov 7, 1962 – Aug 25, 2009 |
Elected to finish his brother's term. |
| 88th |
| Re-elected in 1964. |
31 |
89th |
| 90th |
31 |
Elected in 1966. |
Jan 3, 1967 – Jan 3, 1979 |
Republican |
 Edward Brooke |
26 |
| 91st |
| Re-elected in 1970. |
32 |
92nd |
| 93rd |
32 |
Re-elected in 1972.Lost re-election. |
| 94th |
| Re-elected in 1976. |
33 |
95th |
| 96th |
33 |
Elected in 1978.Retired and resigned early to give successor preferential seniority. |
Jan 3, 1979 – Jan 2, 1985 |
Democratic |
 Paul Tsongas |
27 |
| 97th |
| Re-elected in 1982. |
34 |
98th |
| Appointed to finish Tsongas's term, having already been elected to the next term. |
Jan 2, 1985 – Feb 1, 2013 |
Democratic |
 John Kerry |
28 |
| 99th |
34 |
Elected in 1984. |
| 100th |
| Re-elected in 1988. |
35 |
101st |
| 102nd |
35 |
Re-elected in 1990. |
| 103rd |
| Re-elected in 1994. |
36 |
104th |
| 105th |
36 |
Re-elected in 1996. |
| 106th |
| Re-elected in 2000. |
37 |
107th |
| 108th |
37 |
Re-elected in 2002. |
| 109th |
| Re-elected in 2006.Died. |
38 |
110th |
| 111th |
38 |
Re-elected in 2008.Resigned to become U.S. Secretary of State. |
| Vacant |
Aug 25, 2009 – Sep 24, 2009 |
Vacant |
| 26 |
 Paul G. Kirk |
Democratic |
Sep 24, 2009 – Feb 4, 2010 |
Appointed to continue Ted Kennedy's term.Did not run for election to finish the term.[13] |
| 27 |
 Scott Brown |
Republican |
Feb 4, 2010 – Jan 3, 2013 |
Elected to finish Ted Kennedy's term.Lost re-election. |
| 112th |
| 28 |
 Elizabeth Warren |
Democratic |
Jan 3, 2013 – present |
Elected in 2012. |
39 |
113th |
| Appointed to continue Kerry's term.Did not run for election to finish the term.[14] |
Feb 1, 2013 – Jul 15, 2013 |
Democratic |
 Mo Cowan |
29 |
| Elected to finish Kerry's term. |
Jul 16, 2013 – present |
Democratic |
 Ed Markey |
30 |
| 114th |
39 |
Re-elected in 2014. |
| 115th |
| Re-elected in 2018. |
40 |
116th |
| 117th |
40 |
Re-elected in 2020. |
| 118th |
| Re-elected in 2024. |
41 |
119th |
| 120th |
41 |
To be determined in the 2026 election. |
| # |
Senator |
Party |
Years in office |
Electoral history |
T |
C |
T |
Electoral history |
Years in office |
Party |
Senator |
# |
| Class 1 |
Class 2 |