# List of United States senators from New Hampshire

New Hampshire was admitted to the Union on June 21, 1788. It elects United States senators to class 2 and class 3. The state's current senators are Democrats Jeanne Shaheen and Maggie Hassan making it one of only four states alongside Minnesota, Nevada and Washington to have two female U.S. senators. Senator Shaheen is currently serving her third term (since 2009); Senator Hassan is currently serving her second term (since 2017). Jacob Harold Gallinger was New Hampshire's longest-serving senator (1891–1918).

## List of senators

| 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. | 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. | 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. | 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. | 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. | 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. | C | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028. | Class 3Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028. |
| # | Senator | Party | Dates in office | Electoral history | T | C | T | Electoral history | Dates in office | Party | Senator | # |
| 1 | Paine Wingate | Anti- Admin. | Mar 4, 1789 – Mar 3, 1793 | Josiah Bartlett was at first elected in 1788, but "declined the appointment." Elected in 1789.Lost re-election. | 1 | 1st | 1 | Elected in 1788. | Mar 4, 1789 – Mar 3, 1801 | Pro- Admin. | John Langdon | 1 |
| 1 | Paine Wingate | Anti- Admin. | Mar 4, 1789 – Mar 3, 1793 | Josiah Bartlett was at first elected in 1788, but "declined the appointment." Elected in 1789.Lost re-election. | 1 | 2nd | 1 | Elected in 1788. | Mar 4, 1789 – Mar 3, 1801 | Pro- Admin. | John Langdon | 1 |
| 2 | Samuel Livermore | Pro- Admin. | Mar 4, 1793 – Jun 12, 1801 | Elected in 1792. | 2 | 3rd | 1 | Elected in 1788. | Mar 4, 1789 – Mar 3, 1801 | Anti- Admin. | John Langdon | 1 |
| 2 | Samuel Livermore | Federalist | Mar 4, 1793 – Jun 12, 1801 | Elected in 1792. | 2 | 4th | 2 | Re-election year unknown. | Mar 4, 1789 – Mar 3, 1801 | Democratic- Republican | John Langdon | 1 |
| 2 | Samuel Livermore | Federalist | Mar 4, 1793 – Jun 12, 1801 | Elected in 1792. | 2 | 5th | 2 | Re-election year unknown. | Mar 4, 1789 – Mar 3, 1801 | Democratic- Republican | John Langdon | 1 |
| 2 | Samuel Livermore | Federalist | Mar 4, 1793 – Jun 12, 1801 | Re-elected in 1798.Resigned. | 3 | 6th | 2 | Re-election year unknown. | Mar 4, 1789 – Mar 3, 1801 | Democratic- Republican | John Langdon | 1 |
| 2 | Samuel Livermore | Federalist | Mar 4, 1793 – Jun 12, 1801 | Re-elected in 1798.Resigned. | 3 | 7th | 3 | Elected in 1800.Resigned. | Mar 4, 1801 – Jun 14, 1802 | Federalist | James Sheafe | 2 |
| Vacant | Vacant | Vacant | Jun 12, 1801 – Jun 17, 1801 | | 3 | 7th | 3 | Elected in 1800.Resigned. | Mar 4, 1801 – Jun 14, 1802 | Federalist | James Sheafe | 2 |
| 3 | Simeon Olcott | Federalist | Jun 17, 1801 – Mar 3, 1805 | Elected in 1801 to finish Livermore's term. | 3 | 7th | 3 | Elected in 1800.Resigned. | Mar 4, 1801 – Jun 14, 1802 | Federalist | James Sheafe | 2 |
| 3 | Simeon Olcott | Federalist | Jun 17, 1801 – Mar 3, 1805 | Elected in 1801 to finish Livermore's term. | 3 | 7th | 3 | | Jun 14, 1802 – Jun 17, 1802 | Vacant | Vacant | Vacant |
| 3 | Simeon Olcott | Federalist | Jun 17, 1801 – Mar 3, 1805 | Elected in 1801 to finish Livermore's term. | 3 | 7th | 3 | Elected in 1802 to finish Sheafe's term.Retired. | Jun 17, 1802 – Mar 3, 1807 | Federalist | William Plumer | 3 |
| 3 | Simeon Olcott | Federalist | Jun 17, 1801 – Mar 3, 1805 | Elected in 1801 to finish Livermore's term. | 3 | 8th | 3 | Elected in 1802 to finish Sheafe's term.Retired. | Jun 17, 1802 – Mar 3, 1807 | Federalist | William Plumer | 3 |
| 4 | Nicholas Gilman | Democratic- Republican | Mar 4, 1805 – May 2, 1814 | Elected in 1804. | 4 | 9th | 3 | Elected in 1802 to finish Sheafe's term.Retired. | Jun 17, 1802 – Mar 3, 1807 | Federalist | William Plumer | 3 |
| 4 | Nicholas Gilman | Democratic- Republican | Mar 4, 1805 – May 2, 1814 | Elected in 1804. | 4 | 10th | 4 | Elected in 1807.Resigned. | Mar 4, 1807 – Jun 1, 1810 | Democratic- Republican | Nahum Parker | 4 |
| 4 | Nicholas Gilman | Democratic- Republican | Mar 4, 1805 – May 2, 1814 | Elected in 1804. | 4 | 11th | 4 | Elected in 1807.Resigned. | Mar 4, 1807 – Jun 1, 1810 | Democratic- Republican | Nahum Parker | 4 |
| 4 | Nicholas Gilman | Democratic- Republican | Mar 4, 1805 – May 2, 1814 | Elected in 1804. | 4 | 11th | 4 | | Jun 1, 1810 – Jun 21, 1810 | Vacant | Vacant | Vacant |
| 4 | Nicholas Gilman | Democratic- Republican | Mar 4, 1805 – May 2, 1814 | Elected in 1804. | 4 | 11th | 4 | Elected in 1810 to finish Parker's term. | Jun 21, 1810 – Mar 3, 1813 | Federalist | Charles Cutts | 5 |
| 4 | Nicholas Gilman | Democratic- Republican | Mar 4, 1805 – May 2, 1814 | Re-elected in 1810.Died. | 5 | 12th | 4 | Elected in 1810 to finish Parker's term. | Jun 21, 1810 – Mar 3, 1813 | Federalist | Charles Cutts | 5 |
| 4 | Nicholas Gilman | Democratic- Republican | Mar 4, 1805 – May 2, 1814 | Re-elected in 1810.Died. | 5 | 13th | 5 | Legislature failed to elect. | Mar 4, 1813 – Apr 2, 1813 | Vacant | Vacant | | 5 |
| 4 | Nicholas Gilman | Democratic- Republican | Mar 4, 1805 – May 2, 1814 | Re-elected in 1810.Died. | 5 | 13th | 5 | Appointed to continue the term.Retired when successor elected. | Apr 2, 1813 – Jun 10, 1813 | Federalist | Charles Cutts | 5 |
| 4 | Nicholas Gilman | Democratic- Republican | Mar 4, 1805 – May 2, 1814 | Re-elected in 1810.Died. | 5 | 13th | 5 | Elected in 1813 to finish the vacant term that happened in 1813.Resigned. | Jun 10, 1813 – Jun 16, 1817 | Federalist | Jeremiah Mason | 6 |
| Vacant | Vacant | Vacant | May 2, 1814 – Jun 24, 1814 | | 5 | 13th | 5 | Elected in 1813 to finish the vacant term that happened in 1813.Resigned. | Jun 10, 1813 – Jun 16, 1817 | Federalist | Jeremiah Mason | 6 |
| 5 | Thomas W. Thompson | Federalist | Jun 24, 1814 – Mar 3, 1817 | Elected in 1814 to finish Gilman's term. | 5 | 13th | 5 | Elected in 1813 to finish the vacant term that happened in 1813.Resigned. | Jun 10, 1813 – Jun 16, 1817 | Federalist | Jeremiah Mason | 6 |
| 5 | Thomas W. Thompson | Federalist | Jun 24, 1814 – Mar 3, 1817 | Elected in 1814 to finish Gilman's term. | 5 | 14th | 5 | Elected in 1813 to finish the vacant term that happened in 1813.Resigned. | Jun 10, 1813 – Jun 16, 1817 | Federalist | Jeremiah Mason | 6 |
| 6 | David L. Morril | Democratic- Republican | Mar 4, 1817 – Mar 3, 1823 | Elected in 1816.Retired. | 6 | 15th | 5 | Elected in 1813 to finish the vacant term that happened in 1813.Resigned. | Jun 10, 1813 – Jun 16, 1817 | Federalist | Jeremiah Mason | 6 |
| 6 | David L. Morril | Democratic- Republican | Mar 4, 1817 – Mar 3, 1823 | Elected in 1816.Retired. | 6 | 15th | 5 | | Jun 16, 1817 – Jun 27, 1817 | Vacant | Vacant | Vacant |
| 6 | David L. Morril | Democratic- Republican | Mar 4, 1817 – Mar 3, 1823 | Elected in 1816.Retired. | 6 | 15th | 5 | Elected in 1817 to finish the vacant term that happened in 1813. | Jun 27, 1817 – Mar 3, 1819 | Democratic- Republican | Clement Storer | 7 |
| 6 | David L. Morril | Democratic- Republican | Mar 4, 1817 – Mar 3, 1823 | Elected in 1816.Retired. | 6 | 16th | 6 | Elected in 1818. | Mar 4, 1819 – Mar 3, 1825 | Democratic- Republican | John Fabyan Parrott | 8 |
| 6 | David L. Morril | Democratic- Republican | Mar 4, 1817 – Mar 3, 1823 | Elected in 1816.Retired. | 6 | 17th | 6 | Elected in 1818. | Mar 4, 1819 – Mar 3, 1825 | Democratic- Republican | John Fabyan Parrott | 8 |
| 7 | Samuel Bell | Democratic- Republican | Mar 4, 1823 – Mar 3, 1835 | Elected in 1823. | 7 | 18th | 6 | Elected in 1818. | Mar 4, 1819 – Mar 3, 1825 | Democratic- Republican | John Fabyan Parrott | 8 |
| 7 | Samuel Bell | National Republican | Mar 4, 1823 – Mar 3, 1835 | Elected in 1823. | 7 | 19th | 7 | | Mar 3, 1825 – Mar 16, 1825 | Vacant | Vacant | Vacant |
| 7 | Samuel Bell | National Republican | Mar 4, 1823 – Mar 3, 1835 | Elected in 1823. | 7 | 19th | 7 | Elected in 1825. | Mar 16, 1825 – Mar 3, 1831 | Jacksonian | Levi Woodbury | 9 |
| 7 | Samuel Bell | National Republican | Mar 4, 1823 – Mar 3, 1835 | Elected in 1823. | 7 | 20th | 7 | Elected in 1825. | Mar 16, 1825 – Mar 3, 1831 | Jacksonian | Levi Woodbury | 9 |
| 7 | Samuel Bell | National Republican | Mar 4, 1823 – Mar 3, 1835 | Re-elected in 1828 or 1829.Retired. | 8 | 21st | 7 | Elected in 1825. | Mar 16, 1825 – Mar 3, 1831 | Jacksonian | Levi Woodbury | 9 |
| 7 | Samuel Bell | National Republican | Mar 4, 1823 – Mar 3, 1835 | Re-elected in 1828 or 1829.Retired. | 8 | 22nd | 8 | Elected in 1831.Resigned to become Governor of New Hampshire. | Mar 4, 1831 – May 30, 1836 | Jacksonian | Isaac Hill | 10 |
| 7 | Samuel Bell | National Republican | Mar 4, 1823 – Mar 3, 1835 | Re-elected in 1828 or 1829.Retired. | 8 | 23rd | 8 | Elected in 1831.Resigned to become Governor of New Hampshire. | Mar 4, 1831 – May 30, 1836 | Jacksonian | Isaac Hill | 10 |
| 8 | Henry Hubbard | Jacksonian | Mar 4, 1835 – Mar 3, 1841 | Elected in 1835.Retired to run for Governor of New Hampshire. | 9 | 24th | 8 | Elected in 1831.Resigned to become Governor of New Hampshire. | Mar 4, 1831 – May 30, 1836 | Jacksonian | Isaac Hill | 10 |
| 8 | Henry Hubbard | Jacksonian | Mar 4, 1835 – Mar 3, 1841 | Elected in 1835.Retired to run for Governor of New Hampshire. | 9 | 24th | 8 | | May 30, 1836 – Jun 8, 1836 | Vacant | Vacant | Vacant |
| 8 | Henry Hubbard | Jacksonian | Mar 4, 1835 – Mar 3, 1841 | Elected in 1835.Retired to run for Governor of New Hampshire. | 9 | 24th | 8 | Elected in 1836 to finish Hill's term.Lost re-election. | Jun 8, 1836 – Mar 3, 1837 | Jacksonian | John Page | 11 |
| 8 | Henry Hubbard | Democratic | Mar 4, 1835 – Mar 3, 1841 | Elected in 1835.Retired to run for Governor of New Hampshire. | 9 | 25th | 9 | Elected in 1837.Resigned. | Mar 4, 1837 – Feb 28, 1842 | Democratic | Franklin Pierce | 12 |
| 8 | Henry Hubbard | Democratic | Mar 4, 1835 – Mar 3, 1841 | Elected in 1835.Retired to run for Governor of New Hampshire. | 9 | 26th | 9 | Elected in 1837.Resigned. | Mar 4, 1837 – Feb 28, 1842 | Democratic | Franklin Pierce | 12 |
| 9 | Levi Woodbury | Democratic | Mar 4, 1841 – Sep 20, 1845 | Elected in 1841.Resigned to become a Justice of the U.S. Supreme Court. | 10 | 27th | 9 | Elected in 1837.Resigned. | Mar 4, 1837 – Feb 28, 1842 | Democratic | Franklin Pierce | 12 |
| 9 | Levi Woodbury | Democratic | Mar 4, 1841 – Sep 20, 1845 | Elected in 1841.Resigned to become a Justice of the U.S. Supreme Court. | 10 | 27th | 9 | Appointed to continue Pierce's term.Elected in 1842 to finish Pierce's term. | Mar 1, 1842 – Mar 3, 1843 | Democratic | Leonard Wilcox | 13 |
| 9 | Levi Woodbury | Democratic | Mar 4, 1841 – Sep 20, 1845 | Elected in 1841.Resigned to become a Justice of the U.S. Supreme Court. | 10 | 28th | 10 | Elected in 1843. | Mar 4, 1843 – Mar 3, 1849 | Democratic | Charles G. Atherton | 14 |
| 9 | Levi Woodbury | Democratic | Mar 4, 1841 – Sep 20, 1845 | Elected in 1841.Resigned to become a Justice of the U.S. Supreme Court. | 10 | 29th | 10 | Elected in 1843. | Mar 4, 1843 – Mar 3, 1849 | Democratic | Charles G. Atherton | 14 |
| Vacant | Vacant | Vacant | Sep 20, 1845 – Dec 1, 1845 | | 10 | 29th | 10 | Elected in 1843. | Mar 4, 1843 – Mar 3, 1849 | Democratic | Charles G. Atherton | 14 |
| 10 | Benning W. Jenness | Democratic | Dec 1, 1845 – Jun 13, 1846 | Appointed to continue Woodbury's term.Lost election to finish Woodbury's term. | 10 | 29th | 10 | Elected in 1843. | Mar 4, 1843 – Mar 3, 1849 | Democratic | Charles G. Atherton | 14 |
| 11 | Joseph Cilley | Liberty | Jun 13, 1846 – Mar 3, 1847 | Elected in 1846 to finish Woodbury's term.Lost election to next term. | 10 | 29th | 10 | Elected in 1843. | Mar 4, 1843 – Mar 3, 1849 | Democratic | Charles G. Atherton | 14 |
| 12 | John P. Hale | Independent Democratic | Mar 4, 1847 – Mar 3, 1853 | Elected in 1846.Retired to run for President of the United States. | 11 | 30th | 10 | Elected in 1843. | Mar 4, 1843 – Mar 3, 1849 | Democratic | Charles G. Atherton | 14 |
| 12 | John P. Hale | Free Soil | Mar 4, 1847 – Mar 3, 1853 | Elected in 1846.Retired to run for President of the United States. | 11 | 31st | 11 | Elected in 1848 or 1849.Died. | Mar 4, 1849 – Jan 11, 1855 | Democratic | Moses Norris Jr. | 15 |
| 12 | John P. Hale | Free Soil | Mar 4, 1847 – Mar 3, 1853 | Elected in 1846.Retired to run for President of the United States. | 11 | 32nd | 11 | Elected in 1848 or 1849.Died. | Mar 4, 1849 – Jan 11, 1855 | Democratic | Moses Norris Jr. | 15 |
| 13 | Charles G. Atherton | Democratic | Mar 4, 1853 – Nov 15, 1853 | Elected in 1852.Died. | 12 | 33rd | 11 | Elected in 1848 or 1849.Died. | Mar 4, 1849 – Jan 11, 1855 | Democratic | Moses Norris Jr. | 15 |
| Vacant | Vacant | Vacant | Nov 15, 1853 – Nov 29, 1853 | | 12 | 33rd | 11 | Elected in 1848 or 1849.Died. | Mar 4, 1849 – Jan 11, 1855 | Democratic | Moses Norris Jr. | 15 |
| 14 | Jared W. Williams | Democratic | Nov 29, 1853 – Jul 15, 1854 | Appointed to continue Atherton's term.Appointment expired without election. | 12 | 33rd | 11 | Elected in 1848 or 1849.Died. | Mar 4, 1849 – Jan 11, 1855 | Democratic | Moses Norris Jr. | 15 |
| Vacant | Vacant | Vacant | Jul 15, 1854 – Jul 30, 1855 | | 12 | 33rd | 11 | Elected in 1848 or 1849.Died. | Mar 4, 1849 – Jan 11, 1855 | Democratic | Moses Norris Jr. | 15 |
| Vacant | Vacant | Vacant | Jul 15, 1854 – Jul 30, 1855 | | 12 | 33rd | 11 | | Jan 11, 1855 – Jan 16, 1855 | Vacant | Vacant | Vacant |
| Vacant | Vacant | Vacant | Jul 15, 1854 – Jul 30, 1855 | | 12 | 33rd | 11 | Appointed to finish Norris's term. | Jan 16, 1855 – Mar 3, 1855 | Democratic | John S. Wells | 16 |
| Vacant | Vacant | Vacant | Jul 15, 1854 – Jul 30, 1855 | | 12 | 34th | 12 | Legislature failed to elect. | Mar 4, 1855 – Jul 29, 1855 | Vacant | Vacant | Vacant |
| 15 | John P. Hale | Republican | Jul 30, 1855 – Mar 3, 1865 | Elected in 1855 to finish Atherton's term. | 12 | 34th | 12 | Elected late in 1855.Died. | Jul 30, 1855 – May 26, 1857 | Republican | James Bell | 17 |
| 15 | John P. Hale | Republican | Jul 30, 1855 – Mar 3, 1865 | Elected in 1855 to finish Atherton's term. | 12 | 35th | 12 | Elected late in 1855.Died. | Jul 30, 1855 – May 26, 1857 | Republican | James Bell | 17 |
| 15 | John P. Hale | Republican | Jul 30, 1855 – Mar 3, 1865 | Elected in 1855 to finish Atherton's term. | 12 | 35th | 12 | | May 26, 1857 – Jun 27, 1857 | Vacant | Vacant | Vacant |
| 15 | John P. Hale | Republican | Jul 30, 1855 – Mar 3, 1865 | Elected in 1855 to finish Atherton's term. | 12 | 35th | 12 | Elected in 1857 to finish Bell's term. | Jun 27, 1857 – Jul 27, 1866 | Republican | Daniel Clark | 18 |
| 15 | John P. Hale | Republican | Jul 30, 1855 – Mar 3, 1865 | Re-elected in 1859. | 13 | 36th | 12 | Elected in 1857 to finish Bell's term. | Jun 27, 1857 – Jul 27, 1866 | Republican | Daniel Clark | 18 |
| 15 | John P. Hale | Republican | Jul 30, 1855 – Mar 3, 1865 | Re-elected in 1859. | 13 | 37th | 13 | Re-elected in 1861.Resigned. | Jun 27, 1857 – Jul 27, 1866 | Republican | Daniel Clark | 18 |
| 15 | John P. Hale | Republican | Jul 30, 1855 – Mar 3, 1865 | Re-elected in 1859. | 13 | 38th | 13 | Re-elected in 1861.Resigned. | Jun 27, 1857 – Jul 27, 1866 | Republican | Daniel Clark | 18 |
| 16 | Aaron H. Cragin | Republican | Mar 4, 1865 – Mar 3, 1877 | Elected in 1864. | 14 | 39th | 13 | Re-elected in 1861.Resigned. | Jun 27, 1857 – Jul 27, 1866 | Republican | Daniel Clark | 18 |
| 16 | Aaron H. Cragin | Republican | Mar 4, 1865 – Mar 3, 1877 | Elected in 1864. | 14 | 39th | 13 | | Jul 27, 1866 – Aug 31, 1866 | Vacant | Vacant | Vacant |
| 16 | Aaron H. Cragin | Republican | Mar 4, 1865 – Mar 3, 1877 | Elected in 1864. | 14 | 39th | 13 | Appointed to finish Clark's term.Retired. | Aug 31, 1866 – Mar 3, 1867 | Republican | George G. Fogg | 19 |
| 16 | Aaron H. Cragin | Republican | Mar 4, 1865 – Mar 3, 1877 | Elected in 1864. | 14 | 40th | 14 | Elected in 1866 or 1867.Lost renomination. | Mar 4, 1867 – Mar 3, 1873 | Republican | James W. Patterson | 20 |
| 16 | Aaron H. Cragin | Republican | Mar 4, 1865 – Mar 3, 1877 | Elected in 1864. | 14 | 41st | 14 | Elected in 1866 or 1867.Lost renomination. | Mar 4, 1867 – Mar 3, 1873 | Republican | James W. Patterson | 20 |
| 16 | Aaron H. Cragin | Republican | Mar 4, 1865 – Mar 3, 1877 | Re-elected in 1870. | 15 | 42nd | 14 | Elected in 1866 or 1867.Lost renomination. | Mar 4, 1867 – Mar 3, 1873 | Republican | James W. Patterson | 20 |
| 16 | Aaron H. Cragin | Republican | Mar 4, 1865 – Mar 3, 1877 | Re-elected in 1870. | 15 | 43rd | 15 | Elected in 1872.Lost re-election. | Mar 4, 1873 – Mar 3, 1879 | Republican | Bainbridge Wadleigh | 21 |
| 16 | Aaron H. Cragin | Republican | Mar 4, 1865 – Mar 3, 1877 | Re-elected in 1870. | 15 | 44th | 15 | Elected in 1872.Lost re-election. | Mar 4, 1873 – Mar 3, 1879 | Republican | Bainbridge Wadleigh | 21 |
| 17 | Edward H. Rollins | Republican | Mar 4, 1877 – Mar 3, 1883 | Elected in 1876.Lost re-election. | 16 | 45th | 15 | Elected in 1872.Lost re-election. | Mar 4, 1873 – Mar 3, 1879 | Republican | Bainbridge Wadleigh | 21 |
| 17 | Edward H. Rollins | Republican | Mar 4, 1877 – Mar 3, 1883 | Elected in 1876.Lost re-election. | 16 | 46th | 16 | Legislature failed to elect. | Mar 3, 1879 – Mar 18, 1879 | Vacant | Vacant | Vacant |
| 17 | Edward H. Rollins | Republican | Mar 4, 1877 – Mar 3, 1883 | Elected in 1876.Lost re-election. | 16 | 46th | 16 | Appointed to fill vacancy caused by legislature's failure to elect.Retired. | Mar 18, 1879 – Jun 18, 1879 | Republican | Charles H. Bell | 22 |
| 17 | Edward H. Rollins | Republican | Mar 4, 1877 – Mar 3, 1883 | Elected in 1876.Lost re-election. | 16 | 46th | 16 | | Jun 18, 1879 – Jun 20, 1879 | Vacant | Vacant | Vacant |
| 17 | Edward H. Rollins | Republican | Mar 4, 1877 – Mar 3, 1883 | Elected in 1876.Lost re-election. | 16 | 46th | 16 | Elected in 1879 to finish the vacant term. | Jun 20, 1879 – Mar 3, 1885 | Republican | Henry W. Blair | 23 |
| 17 | Edward H. Rollins | Republican | Mar 4, 1877 – Mar 3, 1883 | Elected in 1876.Lost re-election. | 16 | 47th | 16 | Elected in 1879 to finish the vacant term. | Jun 20, 1879 – Mar 3, 1885 | Republican | Henry W. Blair | 23 |
| Vacant | Vacant | Vacant | Mar 4, 1883 – Aug 2, 1883 | Legislature failed to elect. | 17 | 48th | 16 | Elected in 1879 to finish the vacant term. | Jun 20, 1879 – Mar 3, 1885 | Republican | Henry W. Blair | 23 |
| 18 | Austin F. Pike | Republican | Aug 2, 1883 – Oct 8, 1886 | Elected late in 1883.Died. | 17 | 48th | 16 | Elected in 1879 to finish the vacant term. | Jun 20, 1879 – Mar 3, 1885 | Republican | Henry W. Blair | 23 |
| 18 | Austin F. Pike | Republican | Aug 2, 1883 – Oct 8, 1886 | Elected late in 1883.Died. | 17 | 49th | 17 | Legislature failed to elect. | Mar 3, 1885 – Mar 5, 1885 | Vacant | Vacant | | 23 |
| 18 | Austin F. Pike | Republican | Aug 2, 1883 – Oct 8, 1886 | Elected late in 1883.Died. | 17 | 49th | 17 | Appointed to continue the vacant term.Elected in 1885 to finish the vacant term.Lost renomination. | Mar 5, 1885 – Mar 3, 1891 | Republican | Henry W. Blair | 23 |
| Vacant | Vacant | Vacant | Oct 8, 1886 – Nov 14, 1886 | | 17 | 49th | 17 | Appointed to continue the vacant term.Elected in 1885 to finish the vacant term.Lost renomination. | Mar 5, 1885 – Mar 3, 1891 | Republican | Henry W. Blair | 23 |
| 19 | Person Colby Cheney | Republican | Nov 14, 1886 – Jun 14, 1887 | Appointed to continue Pike's term.Retired when successor qualified. | 17 | 49th | 17 | Appointed to continue the vacant term.Elected in 1885 to finish the vacant term.Lost renomination. | Mar 5, 1885 – Mar 3, 1891 | Republican | Henry W. Blair | 23 |
| 19 | Person Colby Cheney | Republican | Nov 14, 1886 – Jun 14, 1887 | Appointed to continue Pike's term.Retired when successor qualified. | 17 | 50th | 17 | Appointed to continue the vacant term.Elected in 1885 to finish the vacant term.Lost renomination. | Mar 5, 1885 – Mar 3, 1891 | Republican | Henry W. Blair | 23 |
| 20 | Bill Chandler | Republican | Jun 14, 1887 – Mar 3, 1889 | Elected in 1887 to finish Pike's term.Legislature failed to elect. | 17 | 50th | 17 | Appointed to continue the vacant term.Elected in 1885 to finish the vacant term.Lost renomination. | Mar 5, 1885 – Mar 3, 1891 | Republican | Henry W. Blair | 23 |
| 21 | Gilman Marston | Republican | Mar 4, 1889 – Jun 18, 1889 | Appointed to start term when legislature failed to elect. | 18 | 51st | 17 | Appointed to continue the vacant term.Elected in 1885 to finish the vacant term.Lost renomination. | Mar 5, 1885 – Mar 3, 1891 | Republican | Henry W. Blair | 23 |
| 22 | Bill Chandler | Republican | Jun 18, 1889 – Mar 3, 1901 | Elected in 1889 to finish the term. | 18 | 51st | 17 | Appointed to continue the vacant term.Elected in 1885 to finish the vacant term.Lost renomination. | Mar 5, 1885 – Mar 3, 1891 | Republican | Henry W. Blair | 23 |
| 22 | Bill Chandler | Republican | Jun 18, 1889 – Mar 3, 1901 | Elected in 1889 to finish the term. | 18 | 52nd | 18 | Elected in 1891. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 22 | Bill Chandler | Republican | Jun 18, 1889 – Mar 3, 1901 | Elected in 1889 to finish the term. | 18 | 53rd | 18 | Elected in 1891. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 22 | Bill Chandler | Republican | Jun 18, 1889 – Mar 3, 1901 | Re-elected in 1895.Lost renomination. | 19 | 54th | 18 | Elected in 1891. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 22 | Bill Chandler | Republican | Jun 18, 1889 – Mar 3, 1901 | Re-elected in 1895.Lost renomination. | 19 | 55th | 19 | Re-elected in 1897. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 22 | Bill Chandler | Republican | Jun 18, 1889 – Mar 3, 1901 | Re-elected in 1895.Lost renomination. | 19 | 56th | 19 | Re-elected in 1897. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 23 | Henry E. Burnham | Republican | Mar 4, 1901 – Mar 3, 1913 | Elected in 1901. | 20 | 57th | 19 | Re-elected in 1897. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 23 | Henry E. Burnham | Republican | Mar 4, 1901 – Mar 3, 1913 | Elected in 1901. | 20 | 58th | 20 | Re-elected in 1903. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 23 | Henry E. Burnham | Republican | Mar 4, 1901 – Mar 3, 1913 | Elected in 1901. | 20 | 59th | 20 | Re-elected in 1903. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 23 | Henry E. Burnham | Republican | Mar 4, 1901 – Mar 3, 1913 | Re-elected in 1907.Retired. | 21 | 60th | 20 | Re-elected in 1903. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 23 | Henry E. Burnham | Republican | Mar 4, 1901 – Mar 3, 1913 | Re-elected in 1907.Retired. | 21 | 61st | 21 | Re-elected in 1909. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 23 | Henry E. Burnham | Republican | Mar 4, 1901 – Mar 3, 1913 | Re-elected in 1907.Retired. | 21 | 62nd | 21 | Re-elected in 1909. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| Vacant | Vacant | Vacant | Mar 4, 1913 – Mar 13, 1913 | Legislature elected late. | 22 | 63rd | 21 | Re-elected in 1909. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 24 | Henry F. Hollis | Democratic | Mar 13, 1913 – Mar 3, 1919 | Elected late in 1913.Retired. | 22 | 63rd | 21 | Re-elected in 1909. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 24 | Henry F. Hollis | Democratic | Mar 13, 1913 – Mar 3, 1919 | Elected late in 1913.Retired. | 22 | 64th | 22 | Re-elected in 1914.Died. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 24 | Henry F. Hollis | Democratic | Mar 13, 1913 – Mar 3, 1919 | Elected late in 1913.Retired. | 22 | 65th | 22 | Re-elected in 1914.Died. | Mar 4, 1891 – Aug 17, 1918 | Republican | Jacob H. Gallinger | 24 |
| 24 | Henry F. Hollis | Democratic | Mar 13, 1913 – Mar 3, 1919 | Elected late in 1913.Retired. | 22 | 65th | 22 | | Aug 17, 1918 – Sep 2, 1918 | Vacant | Vacant | Vacant |
| 24 | Henry F. Hollis | Democratic | Mar 13, 1913 – Mar 3, 1919 | Elected late in 1913.Retired. | 22 | 65th | 22 | Appointed to continue Gallinger's term.Retired. | Sep 2, 1918 – Nov 5, 1918 | Republican | Irving W. Drew | 25 |
| 24 | Henry F. Hollis | Democratic | Mar 13, 1913 – Mar 3, 1919 | Elected late in 1913.Retired. | 22 | 65th | 22 | Elected in 1918 to finish Gallinger's term. | Nov 6, 1918 – Mar 3, 1933 | Republican | George H. Moses | 26 |
| 25 | Henry W. Keyes | Republican | Mar 4, 1919 – Jan 3, 1937 | Elected in 1918. | 23 | 66th | 22 | Elected in 1918 to finish Gallinger's term. | Nov 6, 1918 – Mar 3, 1933 | Republican | George H. Moses | 26 |
| 25 | Henry W. Keyes | Republican | Mar 4, 1919 – Jan 3, 1937 | Elected in 1918. | 23 | 67th | 23 | Re-elected in 1920. | Nov 6, 1918 – Mar 3, 1933 | Republican | George H. Moses | 26 |
| 25 | Henry W. Keyes | Republican | Mar 4, 1919 – Jan 3, 1937 | Elected in 1918. | 23 | 68th | 23 | Re-elected in 1920. | Nov 6, 1918 – Mar 3, 1933 | Republican | George H. Moses | 26 |
| 25 | Henry W. Keyes | Republican | Mar 4, 1919 – Jan 3, 1937 | Re-elected in 1924. | 24 | 69th | 23 | Re-elected in 1920. | Nov 6, 1918 – Mar 3, 1933 | Republican | George H. Moses | 26 |
| 25 | Henry W. Keyes | Republican | Mar 4, 1919 – Jan 3, 1937 | Re-elected in 1924. | 24 | 70th | 24 | Re-elected in 1926.Lost re-election. | Nov 6, 1918 – Mar 3, 1933 | Republican | George H. Moses | 26 |
| 25 | Henry W. Keyes | Republican | Mar 4, 1919 – Jan 3, 1937 | Re-elected in 1924. | 24 | 71st | 24 | Re-elected in 1926.Lost re-election. | Nov 6, 1918 – Mar 3, 1933 | Republican | George H. Moses | 26 |
| 25 | Henry W. Keyes | Republican | Mar 4, 1919 – Jan 3, 1937 | Re-elected in 1930.Retired. | 25 | 72nd | 24 | Re-elected in 1926.Lost re-election. | Nov 6, 1918 – Mar 3, 1933 | Republican | George H. Moses | 26 |
| 25 | Henry W. Keyes | Republican | Mar 4, 1919 – Jan 3, 1937 | Re-elected in 1930.Retired. | 25 | 73rd | 25 | Elected in 1932.Lost re-election. | Mar 4, 1933 – Jan 3, 1939 | Democratic | Fred H. Brown | 27 |
| 25 | Henry W. Keyes | Republican | Mar 4, 1919 – Jan 3, 1937 | Re-elected in 1930.Retired. | 25 | 74th | 25 | Elected in 1932.Lost re-election. | Mar 4, 1933 – Jan 3, 1939 | Democratic | Fred H. Brown | 27 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Elected in 1936. | 26 | 75th | 25 | Elected in 1932.Lost re-election. | Mar 4, 1933 – Jan 3, 1939 | Democratic | Fred H. Brown | 27 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Elected in 1936. | 26 | 76th | 26 | Elected in 1938. | Jan 3, 1939 – Jul 24, 1953 | Republican | Charles W. Tobey | 28 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Elected in 1936. | 26 | 77th | 26 | Elected in 1938. | Jan 3, 1939 – Jul 24, 1953 | Republican | Charles W. Tobey | 28 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1942. | 27 | 78th | 26 | Elected in 1938. | Jan 3, 1939 – Jul 24, 1953 | Republican | Charles W. Tobey | 28 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1942. | 27 | 79th | 27 | Re-elected in 1944. | Jan 3, 1939 – Jul 24, 1953 | Republican | Charles W. Tobey | 28 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1942. | 27 | 80th | 27 | Re-elected in 1944. | Jan 3, 1939 – Jul 24, 1953 | Republican | Charles W. Tobey | 28 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1948. | 28 | 81st | 27 | Re-elected in 1944. | Jan 3, 1939 – Jul 24, 1953 | Republican | Charles W. Tobey | 28 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1948. | 28 | 82nd | 28 | Re-elected in 1950.Died. | Jan 3, 1939 – Jul 24, 1953 | Republican | Charles W. Tobey | 28 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1948. | 28 | 83rd | 28 | Re-elected in 1950.Died. | Jan 3, 1939 – Jul 24, 1953 | Republican | Charles W. Tobey | 28 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1948. | 28 | 83rd | 28 | | Jul 24, 1953 – Aug 14, 1953 | Vacant | Vacant | Vacant |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1948. | 28 | 83rd | 28 | Appointed to continue Tobey's term.Lost nomination to finish Tobey's term. | Aug 14, 1953 – Nov 7, 1954 | Republican | Robert W. Upton | 29 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1948. | 28 | 83rd | 28 | Elected in 1954 to finish Tobey's term. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1954. | 29 | 84th | 28 | Elected in 1954 to finish Tobey's term. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1954. | 29 | 85th | 29 | Re-elected in 1956. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1954. | 29 | 86th | 29 | Re-elected in 1956. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 26 | Styles Bridges | Republican | Jan 3, 1937 – Nov 26, 1961 | Re-elected in 1960.Died. | 30 | 87th | 29 | Re-elected in 1956. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| Vacant | Vacant | Vacant | Nov 26, 1961 – Jan 10, 1962 | | 30 | 87th | 29 | Re-elected in 1956. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 27 | Moe Murphy | Republican | Jan 10, 1962 – Nov 6, 1962 | Appointed to continue Bridges's term.Lost nomination to finish Bridges's term. | 30 | 87th | 29 | Re-elected in 1956. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Elected in 1962 to finish Bridge's term. | 30 | 87th | 29 | Re-elected in 1956. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Elected in 1962 to finish Bridge's term. | 30 | 88th | 30 | Re-elected in 1962. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Elected in 1962 to finish Bridge's term. | 30 | 89th | 30 | Re-elected in 1962. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Re-elected in 1966. | 31 | 90th | 30 | Re-elected in 1962. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Re-elected in 1966. | 31 | 91st | 31 | Re-elected in 1968.Retired, then resigned early. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Re-elected in 1966. | 31 | 92nd | 31 | Re-elected in 1968.Retired, then resigned early. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Re-elected in 1972.Lost re-election. | 32 | 93rd | 31 | Re-elected in 1968.Retired, then resigned early. | Nov 8, 1954 – Dec 31, 1974 | Republican | Norris Cotton | 30 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Re-elected in 1972.Lost re-election. | 32 | 93rd | 31 | Appointed to finish Cotton's term.Term annulled. | Dec 31, 1974 – Jan 3, 1975 | Republican | Louis Wyman | 31 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Re-elected in 1972.Lost re-election. | 32 | 94th | 32 | Contested election. | Jan 3, 1975 – Aug 8, 1975 | Vacant | Vacant | Vacant |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Re-elected in 1972.Lost re-election. | 32 | 94th | 32 | Appointed to continue term after contested election.Resigned when successor elected. | Aug 8, 1975 – Sep 18, 1975 | Republican | Norris Cotton | 32 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Re-elected in 1972.Lost re-election. | 32 | 94th | 32 | Elected to finish contested term.Lost re-election and resigned early. | Sep 18, 1975 – Dec 29, 1980 | Democratic | John Durkin | 33 |
| 28 | Thomas J. McIntyre | Democratic | Nov 7, 1962 – Jan 3, 1979 | Re-elected in 1972.Lost re-election. | 32 | 95th | 32 | Elected to finish contested term.Lost re-election and resigned early. | Sep 18, 1975 – Dec 29, 1980 | Democratic | John Durkin | 33 |
| 29 | Gordon Humphrey | Republican | Jan 3, 1979 – Dec 4, 1990 | Elected in 1978. | 33 | 96th | 32 | Elected to finish contested term.Lost re-election and resigned early. | Sep 18, 1975 – Dec 29, 1980 | Democratic | John Durkin | 33 |
| 29 | Gordon Humphrey | Republican | Jan 3, 1979 – Dec 4, 1990 | Elected in 1978. | 33 | 96th | 32 | Appointed to finish contested term, having been elected to the next term. | Dec 29, 1980 – Jan 3, 1993 | Republican | Warren Rudman | 34 |
| 29 | Gordon Humphrey | Republican | Jan 3, 1979 – Dec 4, 1990 | Elected in 1978. | 33 | 97th | 33 | Elected in 1980. | Dec 29, 1980 – Jan 3, 1993 | Republican | Warren Rudman | 34 |
| 29 | Gordon Humphrey | Republican | Jan 3, 1979 – Dec 4, 1990 | Elected in 1978. | 33 | 98th | 33 | Elected in 1980. | Dec 29, 1980 – Jan 3, 1993 | Republican | Warren Rudman | 34 |
| 29 | Gordon Humphrey | Republican | Jan 3, 1979 – Dec 4, 1990 | Re-elected in 1984.Retired and resigned early to take his seat in the New Hampshire Senate. | 34 | 99th | 33 | Elected in 1980. | Dec 29, 1980 – Jan 3, 1993 | Republican | Warren Rudman | 34 |
| 29 | Gordon Humphrey | Republican | Jan 3, 1979 – Dec 4, 1990 | Re-elected in 1984.Retired and resigned early to take his seat in the New Hampshire Senate. | 34 | 100th | 34 | Re-elected in 1986.Retired. | Dec 29, 1980 – Jan 3, 1993 | Republican | Warren Rudman | 34 |
| 29 | Gordon Humphrey | Republican | Jan 3, 1979 – Dec 4, 1990 | Re-elected in 1984.Retired and resigned early to take his seat in the New Hampshire Senate. | 34 | 101st | 34 | Re-elected in 1986.Retired. | Dec 29, 1980 – Jan 3, 1993 | Republican | Warren Rudman | 34 |
| Vacant | Vacant | Vacant | Dec 4, 1990 – Dec 7, 1990 | | 34 | 101st | 34 | Re-elected in 1986.Retired. | Dec 29, 1980 – Jan 3, 1993 | Republican | Warren Rudman | 34 |
| 30 | Bob Smith | Republican | Dec 7, 1990 – Jan 3, 2003 | Appointed to finish Humphrey's term, having already been elected to the next term. | 34 | 101st | 34 | Re-elected in 1986.Retired. | Dec 29, 1980 – Jan 3, 1993 | Republican | Warren Rudman | 34 |
| 30 | Bob Smith | Republican | Dec 7, 1990 – Jan 3, 2003 | Elected in 1990. | 35 | 102nd | 34 | Re-elected in 1986.Retired. | Dec 29, 1980 – Jan 3, 1993 | Republican | Warren Rudman | 34 |
| 30 | Bob Smith | Republican | Dec 7, 1990 – Jan 3, 2003 | Elected in 1990. | 35 | 103rd | 35 | Elected in 1992. | Jan 3, 1993 – Jan 3, 2011 | Republican | Judd Gregg | 35 |
| 30 | Bob Smith | Republican | Dec 7, 1990 – Jan 3, 2003 | Elected in 1990. | 35 | 104th | 35 | Elected in 1992. | Jan 3, 1993 – Jan 3, 2011 | Republican | Judd Gregg | 35 |
| 30 | Bob Smith | Republican | Dec 7, 1990 – Jan 3, 2003 | Re-elected in 1996.Lost renomination. | 36 | 105th | 35 | Elected in 1992. | Jan 3, 1993 – Jan 3, 2011 | Republican | Judd Gregg | 35 |
| 30 | Bob Smith | Republican | Dec 7, 1990 – Jan 3, 2003 | Re-elected in 1996.Lost renomination. | 36 | 106th | 36 | Re-elected in 1998. | Jan 3, 1993 – Jan 3, 2011 | Republican | Judd Gregg | 35 |
| 30 | Bob Smith | Republican | Dec 7, 1990 – Jan 3, 2003 | Re-elected in 1996.Lost renomination. | 36 | 107th | 36 | Re-elected in 1998. | Jan 3, 1993 – Jan 3, 2011 | Republican | Judd Gregg | 35 |
| 31 | John E. Sununu | Republican | Jan 3, 2003 – Jan 3, 2009 | Elected in 2002.Lost re-election. | 37 | 108th | 36 | Re-elected in 1998. | Jan 3, 1993 – Jan 3, 2011 | Republican | Judd Gregg | 35 |
| 31 | John E. Sununu | Republican | Jan 3, 2003 – Jan 3, 2009 | Elected in 2002.Lost re-election. | 37 | 109th | 37 | Re-elected in 2004.Retired. | Jan 3, 1993 – Jan 3, 2011 | Republican | Judd Gregg | 35 |
| 31 | John E. Sununu | Republican | Jan 3, 2003 – Jan 3, 2009 | Elected in 2002.Lost re-election. | 37 | 110th | 37 | Re-elected in 2004.Retired. | Jan 3, 1993 – Jan 3, 2011 | Republican | Judd Gregg | 35 |
| 32 | Jeanne Shaheen | Democratic | Jan 3, 2009 – present | Elected in 2008. | 38 | 111th | 37 | Re-elected in 2004.Retired. | Jan 3, 1993 – Jan 3, 2011 | Republican | Judd Gregg | 35 |
| 32 | Jeanne Shaheen | Democratic | Jan 3, 2009 – present | Elected in 2008. | 38 | 112th | 38 | Elected in 2010.Lost re-election. | Jan 3, 2011 – Jan 3, 2017 | Republican | Kelly Ayotte | 36 |
| 32 | Jeanne Shaheen | Democratic | Jan 3, 2009 – present | Elected in 2008. | 38 | 113th | 38 | Elected in 2010.Lost re-election. | Jan 3, 2011 – Jan 3, 2017 | Republican | Kelly Ayotte | 36 |
| 32 | Jeanne Shaheen | Democratic | Jan 3, 2009 – present | Re-elected in 2014. | 39 | 114th | 38 | Elected in 2010.Lost re-election. | Jan 3, 2011 – Jan 3, 2017 | Republican | Kelly Ayotte | 36 |
| 32 | Jeanne Shaheen | Democratic | Jan 3, 2009 – present | Re-elected in 2014. | 39 | 115th | 39 | Elected in 2016. | Jan 3, 2017 – present | Democratic | Maggie Hassan | 37 |
| 32 | Jeanne Shaheen | Democratic | Jan 3, 2009 – present | Re-elected in 2014. | 39 | 116th | 39 | Elected in 2016. | Jan 3, 2017 – present | Democratic | Maggie Hassan | 37 |
| 32 | Jeanne Shaheen | Democratic | Jan 3, 2009 – present | Re-elected in 2020. Retiring at the end of term. | 40 | 117th | 39 | Elected in 2016. | Jan 3, 2017 – present | Democratic | Maggie Hassan | 37 |
| 32 | Jeanne Shaheen | Democratic | Jan 3, 2009 – present | Re-elected in 2020. Retiring at the end of term. | 40 | 118th | 40 | Re-elected in 2022. | Jan 3, 2017 – present | Democratic | Maggie Hassan | 37 |
| 32 | Jeanne Shaheen | Democratic | Jan 3, 2009 – present | Re-elected in 2020. Retiring at the end of term. | 40 | 119th | 40 | Re-elected in 2022. | Jan 3, 2017 – present | Democratic | Maggie Hassan | 37 |
| To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | 41 | 120th | 40 | Re-elected in 2022. | Jan 3, 2017 – present | Democratic | Maggie Hassan | 37 |
| To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | To be determined in the 2026 election. | 41 | 121st | 41 | To be determined in the 2028 election. | To be determined in the 2028 election. | To be determined in the 2028 election. | To be determined in the 2028 election. | To be determined in the 2028 election. |
| # | Senator | Party | Years in office | Electoral history | T | C | T | Electoral history | Years in office | Party | Senator | # |
| Class 2 | Class 2 | Class 2 | Class 2 | Class 2 | Class 2 | C | Class 3 | Class 3 | Class 3 | Class 3 | Class 3 | Class 3 |