# Political party strength in Maine

The following table indicates the party of elected officials in the U.S. state of Maine:
The table also indicates the historical party composition in the:
* State Senate
* State House of Representatives
* State delegation to the U.S. Senate
* State delegation to the U.S. House of Representatives
For years in which a presidential election was held, the table indicates which party's nominees received the state's electoral votes.

## History

The Republican Party controlled the governorship from the American Civil War to 1932, with the Democratic Party only winning four times. The Greenback Party was active in Maine and its gubernatorial candidates had their vote totals rise from 520 votes in the 1876 election to 41,371 votes in the 1878 election. The Greenbacks aided in the election of Democratic gubernatorial nominees Alonzo Garcelon and Harris M. Plaisted. The Democratic Party did not control the state legislature between 1847 and 1911.
The Maine Republican Party supported Theodore Roosevelt during the 1912 Republican presidential primaries against President William Howard Taft. The Maine Progressive Party was founded by Roosevelt supporters on July 31, 1912, at a convention in Portland, Maine. The Republicans were weakened after losing members including Charles H. Hitchborn, who was the treasurer of the party, although Warren C. Philbrook, the chair of the party, remained. Woodrow Wilson won Maine in the presidential election while Roosevelt received more votes than Taft.
On April 5, 1916, the Progressives held their convention and nominated Edwin Lawrence for governor under the coniditon that they would follow the path of the national party. The national Progressive Party attempted to nominate Roosevelt for president against, but he declined and returned to the Republican Party. The Maine Progressives withdrew their candidates and supported the Republicans. B. F. Lawrence, who ran for a seat in the Maine House of Representatives, was the only Progressive elected in 1916, but later joined the Republicans.
Robert M. La Follette, who ran as the Progressive presidential nominee in the 1924 election, told Gilbert E. Roe, who was running his campaign in the eastern United States, that the conditions for his campaigns were good in the eastern United States except for in Maine and Vermont. Republican nominee Calvin Coolidge received over 70% of the popular vote while La Follette only received six percent.

## Table

| Year | Governor | State Legislature | State Legislature | United States Congress | United States Congress | United States Congress | United States Congress | Electoral votes |
| Year | Governor | State Senate | State House | U.S. Senator (Class I) | U.S. Senator (Class II) | U.S. House District 1 | U.S. House District 2 | Electoral votes |
| 1820 | William King (DR) | DR majority | DR majority | John Holmes (DR) | John Chandler (DR) | Joseph Dane (F) | Joseph Dane (F) | James Monroe/ Daniel D. Tompkins (DR) Y |
| 1821 | William King (DR) | DR majority | DR majority | John Holmes (DR) | John Chandler (DR) | Joseph Dane (F) | Joseph Dane (F) | James Monroe/ Daniel D. Tompkins (DR) Y |
| 1821 | William D. Williamson (DR) | DR majority | DR majority | John Holmes (DR) | John Chandler (DR) | 5DR, 2F | 5DR, 2F | | James Monroe/ Daniel D. Tompkins (DR) Y |
| 1821 | Benjamin Ames (DR) | DR majority | DR majority | John Holmes (DR) | John Chandler (DR) | 5DR, 2F | 5DR, 2F | James Monroe/ Daniel D. Tompkins (DR) Y |
| 1822 | Daniel Rose (DR) | DR majority | DR majority | John Holmes (DR) | John Chandler (DR) | 6DR, 1F | 6DR, 1F | | James Monroe/ Daniel D. Tompkins (DR) Y |
| 1822 | Albion Parris (DR) | DR majority | DR majority | John Holmes (DR) | John Chandler (DR) | 6DR, 1F | 6DR, 1F | James Monroe/ Daniel D. Tompkins (DR) Y |
| 1823 | Albion Parris (DR) | DR majority | DR majority | John Holmes (DR) | John Chandler (DR) | 6DR, 1F | 6DR, 1F | James Monroe/ Daniel D. Tompkins (DR) Y |
| 1824 | Albion Parris (DR) | DR majority | NR majority | John Holmes (DR) | John Chandler (DR) | 6DR, 1F | 6DR, 1F | John Quincy Adams/ John C. Calhoun (DR) Y |
| 1825 | Albion Parris (DR) | DR majority | DR majority | John Holmes (NR) | John Chandler (J) | 6NR, 1J | 6NR, 1J | | John Quincy Adams/ John C. Calhoun (DR) Y |
| 1826 | Albion Parris (DR) | DR majority | DR majority | John Holmes (NR) | John Chandler (J) | 6NR, 1J | 6NR, 1J | John Quincy Adams/ John C. Calhoun (DR) Y |
| 1827 | Enoch Lincoln (DR) | DR majority | DR majority | Albion Parris (J) | John Chandler (J) | 4NR, 3J | 4NR, 3J | | John Quincy Adams/ John C. Calhoun (DR) Y |
| 1828 | Enoch Lincoln (DR) | DR majority | DR majority | Albion Parris (J) | John Chandler (J) | 4NR, 3J | 4NR, 3J | John Quincy Adams/ Richard Rush (DR) N |
| 1829 | Enoch Lincoln (DR) | DR majority | NR majority | John Holmes (NR) | Peleg Sprague (NR) | 4J, 3NR | 4J, 3NR | | John Quincy Adams/ Richard Rush (DR) N |
| 1829 | Nathan Cutler (D) | DR majority | NR majority | John Holmes (NR) | Peleg Sprague (NR) | 4J, 3NR | 4J, 3NR | John Quincy Adams/ Richard Rush (DR) N |
| 1830 | Joshua Hall (D) | 12NR, 8DR | NR majority | John Holmes (NR) | Peleg Sprague (NR) | 4J, 3NR | 4J, 3NR | John Quincy Adams/ Richard Rush (DR) N |
| 1830 | Jonathan G. Hunton (NR) | 12NR, 8DR | NR majority | John Holmes (NR) | Peleg Sprague (NR) | 4J, 3NR | 4J, 3NR | John Quincy Adams/ Richard Rush (DR) N |
| 1831 | Samuel E. Smith (D) | 11DR, 9DR | 86DR, 62NR, 1? | John Holmes (NR) | Peleg Sprague (NR) | 6J, 1NR | 6J, 1NR | | John Quincy Adams/ Richard Rush (DR) N |
| 1832 | Samuel E. Smith (D) | 21DR, 4NR | 100DR, 58NR, 24?, 2 vac. | John Holmes (NR) | Peleg Sprague (NR) | 6J, 1NR | 6J, 1NR | Andrew Jackson/ Martin Van Buren (D) Y |
| 1833 | Samuel E. Smith (D) | 15DR, 10NR | 97DR, 59NR, 30? | Ether Shepley (J) | Peleg Sprague (NR) | 7J, 1NR | 7J, 1NR | | Andrew Jackson/ Martin Van Buren (D) Y |
| 1834 | Robert P. Dunlap (D) | 21DR, 3NR, 1A-M | 79DR, 39NR, 63? | Ether Shepley (J) | Peleg Sprague (NR) | 7J, 1NR | 7J, 1NR | Andrew Jackson/ Martin Van Buren (D) Y |
| 1835 | Robert P. Dunlap (D) | 18D, 7NR | 94D, 66NR, 26? | Ether Shepley (J) | John Ruggles (J) | 6J, 2NR | 6J, 2NR | | Andrew Jackson/ Martin Van Buren (D) Y |
| 1836 | Robert P. Dunlap (D) | 22D, 3NR | 51D, 41NR, 94? | Judah Dana (J) | John Ruggles (J) | 6J, 2NR | 6J, 2NR | Martin Van Buren/ Richard Mentor Johnson (D) Y |
| 1837 | Robert P. Dunlap (D) | 21D, 4W | 108D, 54W, 24? | Reuel Williams (D) | John Ruggles (D) | 6D, 2W | 6D, 2W | | Martin Van Buren/ Richard Mentor Johnson (D) Y |
| 1838 | Edward Kent (W) | 14D, 11W | 98W, 85D, 5? | Reuel Williams (D) | John Ruggles (D) | 5D, 3W | 5D, 3W | | Martin Van Buren/ Richard Mentor Johnson (D) Y |
| 1839 | John Fairfield (D) | 15D, 10W | 107D, 73W, 9?. 1 vac. | Reuel Williams (D) | John Ruggles (D) | 6D, 2W | 6D, 2W | | Martin Van Buren/ Richard Mentor Johnson (D) Y |
| 1840 | John Fairfield (D) | 17D, 8W | 123D, 63W, 5? | Reuel Williams (D) | John Ruggles (D) | 6D, 2W | 6D, 2W | William Henry Harrison/ John Tyler (W) Y |
| 1841 | Richard H. Vose (W) | 18W, 7D | 94W, 66D, 30? | Reuel Williams (D) | George Evans (W) | 4D, 4W | 4D, 4W | | William Henry Harrison/ John Tyler (W) Y |
| 1841 | Edward Kent (W) | 18W, 7D | 94W, 66D, 30? | Reuel Williams (D) | George Evans (W) | 4D, 4W | 4D, 4W | William Henry Harrison/ John Tyler (W) Y |
| 1842 | John Fairfield (D) | 27D, 4W | 131D, 55W, 18? | Reuel Williams (D) | George Evans (W) | 4D, 4W | 4D, 4W | William Henry Harrison/ John Tyler (W) Y |
| 1843 | John Fairfield (D) | 30D, 1W | 55D, 18W, 78? | Reuel Williams (D) | George Evans (W) | 5D, 2W | 5D, 2W | | William Henry Harrison/ John Tyler (W) Y |
| 1843 | Edward Kavanagh (D) | 30D, 1W | 55D, 18W, 78? | vacant | George Evans (W) | 5D, 2W | 5D, 2W | William Henry Harrison/ John Tyler (W) Y |
| 1844 | David Dunn (D) | 28D, 3W | 89D, 42W, 2Lty, 18? | John Fairfield (D) | George Evans (W) | 5D, 2W | 5D, 2W | James K. Polk/ George M. Dallas (D) Y |
| 1844 | John W. Dana (D) | 28D, 3W | 89D, 42W, 2Lty, 18? | John Fairfield (D) | George Evans (W) | 5D, 2W | 5D, 2W | James K. Polk/ George M. Dallas (D) Y |
| 1844 | Hugh J. Anderson (D) | 28D, 3W | 89D, 42W, 2Lty, 18? | John Fairfield (D) | George Evans (W) | 5D, 2W | 5D, 2W | James K. Polk/ George M. Dallas (D) Y |
| 1845 | Hugh J. Anderson (D) | 28D, 3W | 85D, 49W, 17? | John Fairfield (D) | George Evans (W) | 6D, 1W | 6D, 1W | | James K. Polk/ George M. Dallas (D) Y |
| 1846 | Hugh J. Anderson (D) | 27D, 4W | 85D, 66W | John Fairfield (D) | George Evans (W) | 6D, 1W | 6D, 1W | James K. Polk/ George M. Dallas (D) Y |
| 1847 | Hugh J. Anderson (D) | 27D, 4W | 78D, 66W, 6Lty, 1I | John Fairfield (D) | James W. Bradbury (D) | 6D, 1W | 6D, 1W | James K. Polk/ George M. Dallas (D) Y |
| 1847 | John W. Dana (D) | 27D, 4W | 78D, 66W, 6Lty, 1I | John Fairfield (D) | James W. Bradbury (D) | 6D, 1W | 6D, 1W | James K. Polk/ George M. Dallas (D) Y |
| 1848 | John W. Dana (D) | 27D, 4W | 102D, 49W | Wyman B. S. Moor (D) | James W. Bradbury (D) | 6D, 1W | 6D, 1W | Lewis Cass/ William Orlando Butler (D) N |
| 1848 | John W. Dana (D) | 27D, 4W | 102D, 49W | Hannibal Hamlin (D) | James W. Bradbury (D) | 6D, 1W | 6D, 1W | Lewis Cass/ William Orlando Butler (D) N |
| 1849 | John W. Dana (D) | 20D, 11W | 85D, 66W | Hannibal Hamlin (D) | James W. Bradbury (D) | 5D, 2W | 5D, 2W | | Lewis Cass/ William Orlando Butler (D) N |
| 1850 | John W. Dana (D) | 20D, 11W | 88D, 63R | Hannibal Hamlin (D) | James W. Bradbury (D) | 5D, 2W | 5D, 2W | Lewis Cass/ William Orlando Butler (D) N |
| 1850 | John Hubbard (D) | 20D, 11W | 88D, 63R | Hannibal Hamlin (D) | James W. Bradbury (D) | 5D, 2W | 5D, 2W | Lewis Cass/ William Orlando Butler (D) N |
| 1851 | John Hubbard (D) | 26D, 4W, 1FS | 93D, 50W, 8FS | Hannibal Hamlin (D) | James W. Bradbury (D) | 5D, 2W | 5D, 2W | Lewis Cass/ William Orlando Butler (D) N |
| 1852 | John Hubbard (D) | 26D, 4W, 1FS | 93D, 50W, 8FS | Hannibal Hamlin (D) | James W. Bradbury (D) | 4D, 3W | 4D, 3W | Franklin Pierce/ William R. King (D) Y |
| 1853 | William G. Crosby (W) | 22W, 9D | 84D, 62W, 4FS, 1? | Hannibal Hamlin (D) | vacant | 3D, 3W | 3D, 3W | | Franklin Pierce/ William R. King (D) Y |
| 1854 | William G. Crosby (W) | 17W, 14D | 76D, 66W, 9FS | Hannibal Hamlin (D) | William P. Fessenden (W) | 3D, 3W | 3D, 3W | Franklin Pierce/ William R. King (D) Y |
| 1855 | Anson Morrill (R) | 16W, 10D, 5FS | 83D, 44W, 23FS, 1? | Hannibal Hamlin (D) | William P. Fessenden (W) | 3O, 2R, 1D | 3O, 2R, 1D | | Franklin Pierce/ William R. King (D) Y |
| 1856 | Samuel Wells (D) | 20D, 9W, 2R | 68D, 61R, 22W | Hannibal Hamlin (D) | William P. Fessenden (W) | 3O, 2R, 1D | 3O, 2R, 1D | John C. Frémont/ William L. Dayton (R) N |
| 1857 | Hannibal Hamlin (R) | 30R, 1D | 125R, 26D | Amos Nourse (R) | William P. Fessenden (R) | 6R | 6R | | John C. Frémont/ William L. Dayton (R) N |
| 1857 | Joseph H. Williams (R) | 30R, 1D | 125R, 26D | Hannibal Hamlin (R) | William P. Fessenden (R) | 6R | 6R | John C. Frémont/ William L. Dayton (R) N |
| 1858 | Lot M. Morrill (R) | 30R, 1D | 117R, 34D | Hannibal Hamlin (R) | William P. Fessenden (R) | 6R | 6R | John C. Frémont/ William L. Dayton (R) N |
| 1859 | Lot M. Morrill (R) | 30R, 1D | 103R, 48D | Hannibal Hamlin (R) | William P. Fessenden (R) | 6R | 6R | John C. Frémont/ William L. Dayton (R) N |
| 1860 | Lot M. Morrill (R) | 30R, 1D | 119R, 32D | Hannibal Hamlin (R) | William P. Fessenden (R) | 6R | 6R | Abraham Lincoln/ Hannibal Hamlin (R) Y |
| 1861 | Israel Washburn Jr. (R) | 31R | 128R, 23D | Lot M. Morrill (R) | William P. Fessenden (R) | 6R | 6R | Abraham Lincoln/ Hannibal Hamlin (R) Y |
| 1862 | Israel Washburn Jr. (R) | 26R, 5D | 123R, 28D | Lot M. Morrill (R) | William P. Fessenden (R) | 6R | 6R | Abraham Lincoln/ Hannibal Hamlin (R) Y |
| 1863 | Abner Coburn (R) | 25R, 6D | 107R, 44D | Lot M. Morrill (R) | William P. Fessenden (R) | 4R, 1D | 4R, 1D | | Abraham Lincoln/ Hannibal Hamlin (R) Y |
| 1864 | Samuel Cony (R) | 30R, 1D | 120R, 31D | Lot M. Morrill (R) | William P. Fessenden (R) | 4R, 1D | 4R, 1D | Abraham Lincoln/ Andrew Johnson (NU) Y |
| 1864 | Samuel Cony (R) | 30R, 1D | 120R, 31D | Lot M. Morrill (R) | Nathan A. Farwell (R) | 4R, 1D | 4R, 1D | Abraham Lincoln/ Andrew Johnson (NU) Y |
| 1865 | Samuel Cony (R) | 28R, 3D | 129R, 22D | Lot M. Morrill (R) | William P. Fessenden (R) | 5R | 5R | | Abraham Lincoln/ Andrew Johnson (NU) Y |
| 1866 | Samuel Cony (R) | 31R | 136R, 15D | Lot M. Morrill (R) | William P. Fessenden (R) | 5R | 5R | Abraham Lincoln/ Andrew Johnson (NU) Y |
| 1867 | Joshua Chamberlain (R) | 31R | 138R, 13D | Lot M. Morrill (R) | William P. Fessenden (R) | 5R | 5R | Abraham Lincoln/ Andrew Johnson (NU) Y |
| 1868 | Joshua Chamberlain (R) | 28R, 3D | 105R, 46D | Lot M. Morrill (R) | William P. Fessenden (R) | 5R | 5R | Ulysses S. Grant/ Schuyler Colfax (R) Y |
| 1869 | Joshua Chamberlain (R) | 29R, 2D | 123R, 28D | Hannibal Hamlin (R) | William P. Fessenden (R) | 5R | 5R | Ulysses S. Grant/ Schuyler Colfax (R) Y |
| 1870 | Joshua Chamberlain (R) | 28R, 3D | 117R, 34D | Hannibal Hamlin (R) | Lot M. Morrill (R) | 5R | 5R | Ulysses S. Grant/ Schuyler Colfax (R) Y |
| 1871 | Sidney Perham (R) | 28R, 3D | 113R, 38D | Hannibal Hamlin (R) | Lot M. Morrill (R) | 5R | 5R | Ulysses S. Grant/ Schuyler Colfax (R) Y |
| 1872 | Sidney Perham (R) | 28R, 3D | 112R, 39D | Hannibal Hamlin (R) | Lot M. Morrill (R) | 5R | 5R | Ulysses S. Grant/ Henry Wilson (R) Y |
| 1873 | Sidney Perham (R) | 30R, 1LR | 128R, 19D, 2LR, 2I | Hannibal Hamlin (R) | Lot M. Morrill (R) | 5R | 5R | Ulysses S. Grant/ Henry Wilson (R) Y |
| 1874 | Nelson Dingley Jr. (R) | 30R, 1LR | 103R, 41D, 7I | Hannibal Hamlin (R) | Lot M. Morrill (R) | 5R | 5R | Ulysses S. Grant/ Henry Wilson (R) Y |
| 1875 | Nelson Dingley Jr. (R) | 28R, 3D | 89R, 55D, 7I | Hannibal Hamlin (R) | Lot M. Morrill (R) | 5R | 5R | Ulysses S. Grant/ Henry Wilson (R) Y |
| 1876 | Seldon Connor (R) | 20R, 11D | 85R, 63D, 3I | Hannibal Hamlin (R) | Lot M. Morrill (R) | 5R | 5R | Rutherford B. Hayes/ William A. Wheeler (R) Y |
| 1877 | Seldon Connor (R) | 29R, 2D | 120R, 30D, 1I | Hannibal Hamlin (R) | James G. Blaine (R) | 5R | 5R | Rutherford B. Hayes/ William A. Wheeler (R) Y |
| 1878 | Seldon Connor (R) | 28R, 3D | 99R, 47D, 3I, 2GB | Hannibal Hamlin (R) | James G. Blaine (R) | 5R | 5R | Rutherford B. Hayes/ William A. Wheeler (R) Y |
| 1879 | Alonzo Garcelon (D) | 20R, 10GB, 1D | 65R, 57GB, 27D, 2I | Hannibal Hamlin (R) | James G. Blaine (R) | 3R, 2GB | 3R, 2GB | | Rutherford B. Hayes/ William A. Wheeler (R) Y |
| 1880 | Daniel F. Davis (R) | 19R, 11GB, 1D | 90R, 50GB, 11D | Hannibal Hamlin (R) | James G. Blaine (R) | 3R, 2GB | 3R, 2GB | James A. Garfield/ Chester A. Arthur (R) Y |
| 1881 | Harris M. Plaisted (D) | 23R, 6GB, 2D | 84R, 40GB, 27D | Eugene Hale (R) | William P. Frye (R) | 3R, 2GB | 3R, 2GB | James A. Garfield/ Chester A. Arthur (R) Y |
| 1882 | Harris M. Plaisted (D) | 23R, 6GB, 2D | 84R, 40GB, 27D | Eugene Hale (R) | William P. Frye (R) | 3R, 2GB | 3R, 2GB | James A. Garfield/ Chester A. Arthur (R) Y |
| 1883 | Frederick Robie (R) | 28R, 3D | 108R, 43D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | | James A. Garfield/ Chester A. Arthur (R) Y |
| 1884 | Frederick Robie (R) | 28R, 3D | 108R, 43D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | James G. Blaine/ John A. Logan (R) N |
| 1885 | Frederick Robie (R) | 31R | 115R, 34D, 2GB | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | | James G. Blaine/ John A. Logan (R) N |
| 1886 | Frederick Robie (R) | 31R | 115R, 34D, 2GB | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | James G. Blaine/ John A. Logan (R) N |
| 1887 | Joseph R. Bodwell (R) | 27R, 4D | 122R, 29D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | James G. Blaine/ John A. Logan (R) N |
| 1887 | Sebastian Streeter Marble (R) | 27R, 4D | 122R, 29D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | James G. Blaine/ John A. Logan (R) N |
| 1888 | Sebastian Streeter Marble (R) | 27R, 4D | 122R, 29D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Benjamin Harrison/ Levi P. Morton (R) Y |
| 1889 | Edwin C. Burleigh (R) | 31R | 125R, 26D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Benjamin Harrison/ Levi P. Morton (R) Y |
| 1890 | Edwin C. Burleigh (R) | 31R | 125R, 26D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Benjamin Harrison/ Levi P. Morton (R) Y |
| 1891 | Edwin C. Burleigh (R) | 27R, 4D | 110R, 41D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Benjamin Harrison/ Levi P. Morton (R) Y |
| 1892 | Edwin C. Burleigh (R) | 27R, 4D | 110R, 41D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Benjamin Harrison/ Whitelaw Reid (R) N |
| 1893 | Henry B. Cleaves (R) | 30R, 1D | 107R, 44D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Benjamin Harrison/ Whitelaw Reid (R) N |
| 1894 | Henry B. Cleaves (R) | 30R, 1D | 107R, 44D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Benjamin Harrison/ Whitelaw Reid (R) N |
| 1895 | Henry B. Cleaves (R) | 31R | 146R, 5D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Benjamin Harrison/ Whitelaw Reid (R) N |
| 1896 | Henry B. Cleaves (R) | 31R | 146R, 5D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William McKinley/ Garret Hobart (R) Y |
| 1897 | Llewellyn Powers (R) | 31R | 145R, 6D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William McKinley/ Garret Hobart (R) Y |
| 1898 | Llewellyn Powers (R) | 31R | 145R, 6D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William McKinley/ Garret Hobart (R) Y |
| 1899 | Llewellyn Powers (R) | 31R | 126R, 25D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William McKinley/ Garret Hobart (R) Y |
| 1900 | Llewellyn Powers (R) | 31R | 126R, 25D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William McKinley/ Theodore Roosevelt (R) Y |
| 1901 | John Fremont Hill (R) | 30R, 1D | 132R, 19D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William McKinley/ Theodore Roosevelt (R) Y |
| 1902 | John Fremont Hill (R) | 30R, 1D | 132R, 19D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William McKinley/ Theodore Roosevelt (R) Y |
| 1903 | John Fremont Hill (R) | 30R, 1D | 128R, 23D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William McKinley/ Theodore Roosevelt (R) Y |
| 1904 | John Fremont Hill (R) | 30R, 1D | 128R, 23D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Theodore Roosevelt/ Charles W. Fairbanks Y |
| 1905 | William T. Cobb (R) | 27R, 4D | 126R, 25D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Theodore Roosevelt/ Charles W. Fairbanks Y |
| 1906 | William T. Cobb (R) | 27R, 4D | 126R, 25D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Theodore Roosevelt/ Charles W. Fairbanks Y |
| 1907 | William T. Cobb (R) | 23R, 8D | 88R, 63D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | Theodore Roosevelt/ Charles W. Fairbanks Y |
| 1908 | William T. Cobb (R) | 23R, 8D | 88R, 63D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William Howard Taft/ James S. Sherman (R) Y |
| 1909 | Bert M. Fernald (R) | 23R, 8D | 100R, 51D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William Howard Taft/ James S. Sherman (R) Y |
| 1910 | Bert M. Fernald (R) | 23R, 8D | 100R, 51D | Eugene Hale (R) | William P. Frye (R) | 4R | 4R | William Howard Taft/ James S. Sherman (R) Y |
| 1911 | Frederick W. Plaisted (D) | 22D, 9R | 86D, 65R | Charles F. Johnson (D) | William P. Frye (R) | 2R, 2D | 2R, 2D | | William Howard Taft/ James S. Sherman (R) Y |
| 1911 | Frederick W. Plaisted (D) | 22D, 9R | 86D, 65R | Charles F. Johnson (D) | Obadiah Gardner (D) | 2R, 2D | 2R, 2D | William Howard Taft/ James S. Sherman (R) Y |
| 1912 | Frederick W. Plaisted (D) | 22D, 9R | 86D, 65R | Charles F. Johnson (D) | Obadiah Gardner (D) | 2R, 2D | 2R, 2D | Woodrow Wilson/ Thomas R. Marshall (D) Y |
| 1913 | William T. Haines (R) | 21R, 10D | 79R, 72D | Charles F. Johnson (D) | Edwin C. Burleigh (R) | 3R, 1D | 3R, 1D | | Woodrow Wilson/ Thomas R. Marshall (D) Y |
| 1914 | William T. Haines (R) | 21R, 10D | 79R, 72D | Charles F. Johnson (D) | Edwin C. Burleigh (R) | 3R, 1D | 3R, 1D | Woodrow Wilson/ Thomas R. Marshall (D) Y |
| 1915 | Oakley C. Curtis (D) | 17R, 14D | 78D, 69R, 4Prog | Charles F. Johnson (D) | Edwin C. Burleigh (R) | 3R, 1D | 3R, 1D | Woodrow Wilson/ Thomas R. Marshall (D) Y |
| 1916 | Oakley C. Curtis (D) | 17R, 14D | 78D, 69R, 4Prog | Charles F. Johnson (D) | Edwin C. Burleigh (R) | 3R, 1D | 3R, 1D | Charles Evans Hughes/ Charles W. Fairbanks (R) N |
| 1916 | Oakley C. Curtis (D) | 17R, 14D | 78D, 69R, 4Prog | Charles F. Johnson (D) | vacant | 3R, 1D | 3R, 1D | Charles Evans Hughes/ Charles W. Fairbanks (R) N |
| 1916 | Oakley C. Curtis (D) | 17R, 14D | 78D, 69R, 4Prog | Charles F. Johnson (D) | Bert M. Fernald (R) | 3R, 1D | 3R, 1D | Charles Evans Hughes/ Charles W. Fairbanks (R) N |
| 1917 | Carl Milliken (R) | 28R, 3D | 105R, 46D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | | Charles Evans Hughes/ Charles W. Fairbanks (R) N |
| 1918 | Carl Milliken (R) | 28R, 3D | 105R, 46D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Charles Evans Hughes/ Charles W. Fairbanks (R) N |
| 1919 | Carl Milliken (R) | 29R, 2D | 110R, 41D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Charles Evans Hughes/ Charles W. Fairbanks (R) N |
| 1920 | Carl Milliken (R) | 29R, 2D | 110R, 41D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Warren G. Harding/ Calvin Coolidge (R) Y |
| 1921 | Frederic Hale Parkhurst (R) | 31R | 135R, 16D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Warren G. Harding/ Calvin Coolidge (R) Y |
| 1921 | Percival P. Baxter (R) | 31R | 135R, 16D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Warren G. Harding/ Calvin Coolidge (R) Y |
| 1922 | Percival P. Baxter (R) | 31R | 135R, 16D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Warren G. Harding/ Calvin Coolidge (R) Y |
| 1923 | Percival P. Baxter (R) | 28R, 3D | 116R, 35D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Warren G. Harding/ Calvin Coolidge (R) Y |
| 1924 | Percival P. Baxter (R) | 28R, 3D | 116R, 35D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Calvin Coolidge/ Charles G. Dawes (R) Y |
| 1925 | Owen Brewster (R) | 30R, 1D | 122R, 29D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Calvin Coolidge/ Charles G. Dawes (R) Y |
| 1926 | Owen Brewster (R) | 30R, 1D | 122R, 29D | Frederick Hale (R) | Bert M. Fernald (R) | 4R | 4R | Calvin Coolidge/ Charles G. Dawes (R) Y |
| 1926 | Owen Brewster (R) | 30R, 1D | 122R, 29D | Frederick Hale (R) | vacant | 4R | 4R | Calvin Coolidge/ Charles G. Dawes (R) Y |
| 1926 | Owen Brewster (R) | 30R, 1D | 122R, 29D | Frederick Hale (R) | Arthur R. Gould (R) | 4R | 4R | Calvin Coolidge/ Charles G. Dawes (R) Y |
| 1927 | Owen Brewster (R) | 30R, 1D | 129R, 22D | Frederick Hale (R) | Arthur R. Gould (R) | 4R | 4R | Calvin Coolidge/ Charles G. Dawes (R) Y |
| 1928 | Owen Brewster (R) | 30R, 1D | 129R, 22D | Frederick Hale (R) | Arthur R. Gould (R) | 4R | 4R | Herbert Hoover/ Charles Curtis (R) Y |
| 1929 | William Tudor Gardiner (R) | 31R | 135R, 16D | Frederick Hale (R) | Arthur R. Gould (R) | 4R | 4R | Herbert Hoover/ Charles Curtis (R) Y |
| 1930 | William Tudor Gardiner (R) | 31R | 135R, 16D | Frederick Hale (R) | Arthur R. Gould (R) | 4R | 4R | Herbert Hoover/ Charles Curtis (R) Y |
| 1931 | William Tudor Gardiner (R) | 31R | 120R, 31D | Frederick Hale (R) | Wallace H. White (R) | 4R | 4R | Herbert Hoover/ Charles Curtis (R) Y |
| 1932 | William Tudor Gardiner (R) | 31R | 120R, 31D | Frederick Hale (R) | Wallace H. White (R) | 4R | 4R | Herbert Hoover/ Charles Curtis (R) N |
| 1933 | Louis J. Brann (D) | 26R, 7D | 93R, 58D | Frederick Hale (R) | Wallace H. White (R) | 2D, 1R | 2D, 1R | | Herbert Hoover/ Charles Curtis (R) N |
| 1934 | Louis J. Brann (D) | 26R, 7D | 93R, 58D | Frederick Hale (R) | Wallace H. White (R) | 2D, 1R | 2D, 1R | Herbert Hoover/ Charles Curtis (R) N |
| 1935 | Louis J. Brann (D) | 22R, 11D | 96R, 55D | Frederick Hale (R) | Wallace H. White (R) | 2D, 1R | 2D, 1R | Herbert Hoover/ Charles Curtis (R) N |
| 1936 | Louis J. Brann (D) | 22R, 11D | 96R, 55D | Frederick Hale (R) | Wallace H. White (R) | 2D, 1R | 2D, 1R | Alf Landon/ Frank Knox (R) N |
| 1937 | Lewis O. Barrows (R) | 29R, 4D | 124R, 27D | Frederick Hale (R) | Wallace H. White (R) | 3R | 3R | | Alf Landon/ Frank Knox (R) N |
| 1938 | Lewis O. Barrows (R) | 29R, 4D | 124R, 27D | Frederick Hale (R) | Wallace H. White (R) | 3R | 3R | Alf Landon/ Frank Knox (R) N |
| 1939 | Lewis O. Barrows (R) | 31R, 2D | 124R, 27D | Frederick Hale (R) | Wallace H. White (R) | 3R | 3R | Alf Landon/ Frank Knox (R) N |
| 1940 | Lewis O. Barrows (R) | 31R, 2D | 124R, 27D | Frederick Hale (R) | Wallace H. White (R) | 3R | 3R | Wendell Willkie/ Charles L. McNary (R) N |
| 1941 | Sumner Sewall (R) | 31R, 2D | 128R, 23D | Owen Brewster (R) | Wallace H. White (R) | 3R | 3R | Wendell Willkie/ Charles L. McNary (R) N |
| 1942 | Sumner Sewall (R) | 31R, 2D | 128R, 23D | Owen Brewster (R) | Wallace H. White (R) | 3R | 3R | Wendell Willkie/ Charles L. McNary (R) N |
| 1943 | Sumner Sewall (R) | 32R, 1D | 136R, 15D | Owen Brewster (R) | Wallace H. White (R) | 3R | 3R | Wendell Willkie/ Charles L. McNary (R) N |
| 1944 | Sumner Sewall (R) | 32R, 1D | 136R, 15D | Owen Brewster (R) | Wallace H. White (R) | 3R | 3R | Thomas E. Dewey/ John W. Bricker (R) N |
| 1945 | Horace Hildreth (R) | 31R, 2D | 136R, 15D | Owen Brewster (R) | Wallace H. White (R) | 3R | 3R | Thomas E. Dewey/ John W. Bricker (R) N |
| 1946 | Horace Hildreth (R) | 31R, 2D | 136R, 15D | Owen Brewster (R) | Wallace H. White (R) | 3R | 3R | Thomas E. Dewey/ John W. Bricker (R) N |
| 1947 | Horace Hildreth (R) | 30R, 3D | 126R, 25D | Owen Brewster (R) | Wallace H. White (R) | 3R | 3R | Thomas E. Dewey/ John W. Bricker (R) N |
| 1948 | Horace Hildreth (R) | 30R, 3D | 126R, 25D | Owen Brewster (R) | Wallace H. White (R) | 3R | 3R | Thomas E. Dewey/ Earl Warren (R) N |
| 1949 | Frederick G. Payne (R) | 28R, 5D | 126R, 25D | Owen Brewster (R) | Margaret Chase Smith (R) | 3R | 3R | Thomas E. Dewey/ Earl Warren (R) N |
| 1950 | Frederick G. Payne (R) | 28R, 5D | 126R, 25D | Owen Brewster (R) | Margaret Chase Smith (R) | 3R | 3R | Thomas E. Dewey/ Earl Warren (R) N |
| 1951 | Frederick G. Payne (R) | 31R, 2D | 126R, 24D, 1I | Owen Brewster (R) | Margaret Chase Smith (R) | 3R | 3R | Thomas E. Dewey/ Earl Warren (R) N |
| 1952 | Burton M. Cross (R) | 31R, 2D | 126R, 24D, 1I | Owen Brewster (R) | Margaret Chase Smith (R) | 3R | 3R | Dwight D. Eisenhower/ Richard Nixon (R) Y |
| 1953 | Nathaniel M. Haskell (R) | 31R, 2D | 127R, 24D | Frederick G. Payne (R) | Margaret Chase Smith (R) | 3R | 3R | Dwight D. Eisenhower/ Richard Nixon (R) Y |
| 1954 | Burton M. Cross (R) | 31R, 2D | 127R, 24D | Frederick G. Payne (R) | Margaret Chase Smith (R) | 3R | 3R | Dwight D. Eisenhower/ Richard Nixon (R) Y |
| 1955 | Edmund Muskie (D) | 27R, 6D | 119R, 32D | Frederick G. Payne (R) | Margaret Chase Smith (R) | 3R | 3R | Dwight D. Eisenhower/ Richard Nixon (R) Y |
| 1956 | Edmund Muskie (D) | 27R, 6D | 119R, 32D | Frederick G. Payne (R) | Margaret Chase Smith (R) | 3R | 3R | Dwight D. Eisenhower/ Richard Nixon (R) Y |
| 1957 | Edmund Muskie (D) | 25R, 8D | 100R, 51D | Frederick G. Payne (R) | Margaret Chase Smith (R) | 2R, 1D | 2R, 1D | | Dwight D. Eisenhower/ Richard Nixon (R) Y |
| 1958 | Edmund Muskie (D) | 25R, 8D | 100R, 51D | Frederick G. Payne (R) | Margaret Chase Smith (R) | 2R, 1D | 2R, 1D | Dwight D. Eisenhower/ Richard Nixon (R) Y |
| 1959 | Clinton Clauson (D) | 21R, 12D | 94R, 57D | Edmund Muskie (D) | Margaret Chase Smith (R) | 2D, 1R | 2D, 1R | | Dwight D. Eisenhower/ Richard Nixon (R) Y |
| 1960 | John H. Reed (R) | 21R, 12D | 94R, 57D | Edmund Muskie (D) | Margaret Chase Smith (R) | 2D, 1R | 2D, 1R | Richard Nixon/ Henry Cabot Lodge Jr. (R) N |
| 1961 | John H. Reed (R) | 30R, 3D | 113R, 38D | Edmund Muskie (D) | Margaret Chase Smith (R) | 3R | 3R | | Richard Nixon/ Henry Cabot Lodge Jr. (R) N |
| 1962 | John H. Reed (R) | 30R, 3D | 113R, 38D | Edmund Muskie (D) | Margaret Chase Smith (R) | 3R | 3R | Richard Nixon/ Henry Cabot Lodge Jr. (R) N |
| 1963 | John H. Reed (R) | 29R, 5D | 110R, 41D | Edmund Muskie (D) | Margaret Chase Smith (R) | Stanley R. Tupper (R) | Clifford McIntire (R) | Richard Nixon/ Henry Cabot Lodge Jr. (R) N |
| 1964 | John H. Reed (R) | 29R, 5D | 110R, 41D | Edmund Muskie (D) | Margaret Chase Smith (R) | Stanley R. Tupper (R) | Clifford McIntire (R) | Lyndon B. Johnson/ Hubert Humphrey (D) Y |
| 1965 | John H. Reed (R) | 29D, 5R | 80D, 71R | Edmund Muskie (D) | Margaret Chase Smith (R) | Stanley R. Tupper (R) | William Hathaway (D) | Lyndon B. Johnson/ Hubert Humphrey (D) Y |
| 1966 | John H. Reed (R) | 29D, 5R | 80D, 71R | Edmund Muskie (D) | Margaret Chase Smith (R) | Stanley R. Tupper (R) | William Hathaway (D) | Lyndon B. Johnson/ Hubert Humphrey (D) Y |
| 1967 | Kenneth M. Curtis (D) | 24R, 10D | 95R, 56D | Edmund Muskie (D) | Margaret Chase Smith (R) | Peter Kyros (D) | William Hathaway (D) | Lyndon B. Johnson/ Hubert Humphrey (D) Y |
| 1968 | Kenneth M. Curtis (D) | 24R, 10D | 95R, 56D | Edmund Muskie (D) | Margaret Chase Smith (R) | Peter Kyros (D) | William Hathaway (D) | Hubert Humphrey/ Edmund Muskie (D) N |
| 1969 | Kenneth M. Curtis (D) | 18R, 14D | 85R, 66D | Edmund Muskie (D) | Margaret Chase Smith (R) | Peter Kyros (D) | William Hathaway (D) | Hubert Humphrey/ Edmund Muskie (D) N |
| 1970 | Kenneth M. Curtis (D) | 18R, 14D | 85R, 66D | Edmund Muskie (D) | Margaret Chase Smith (R) | Peter Kyros (D) | William Hathaway (D) | Hubert Humphrey/ Edmund Muskie (D) N |
| 1971 | Kenneth M. Curtis (D) | 18R, 14D | 80R, 71D | Edmund Muskie (D) | Margaret Chase Smith (R) | Peter Kyros (D) | William Hathaway (D) | Hubert Humphrey/ Edmund Muskie (D) N |
| 1972 | Kenneth M. Curtis (D) | 18R, 14D | 80R, 71D | Edmund Muskie (D) | Margaret Chase Smith (R) | Peter Kyros (D) | William Hathaway (D) | Richard Nixon/ Spiro Agnew (R) Y |
| 1973 | Kenneth M. Curtis (D) | 22R, 11D | 79R, 72D | Edmund Muskie (D) | William Hathaway (D) | Peter Kyros (D) | William Cohen (R) | Richard Nixon/ Spiro Agnew (R) Y |
| 1974 | Kenneth M. Curtis (D) | 22R, 11D | 79R, 72D | Edmund Muskie (D) | William Hathaway (D) | Peter Kyros (D) | William Cohen (R) | Richard Nixon/ Spiro Agnew (R) Y |
| 1975 | James B. Longley (I) | 19R, 14D | 91D, 59R, 1I | Edmund Muskie (D) | William Hathaway (D) | David F. Emery (R) | William Cohen (R) | Richard Nixon/ Spiro Agnew (R) Y |
| 1976 | James B. Longley (I) | 19R, 14D | 91D, 59R, 1I | Edmund Muskie (D) | William Hathaway (D) | David F. Emery (R) | William Cohen (R) | Gerald Ford/ Bob Dole (R) N |
| 1977 | James B. Longley (I) | 21R, 12D | 89D, 62R | Edmund Muskie (D) | William Hathaway (D) | David F. Emery (R) | William Cohen (R) | Gerald Ford/ Bob Dole (R) N |
| 1978 | James B. Longley (I) | 21R, 12D | 89D, 62R | Edmund Muskie (D) | William Hathaway (D) | David F. Emery (R) | William Cohen (R) | Gerald Ford/ Bob Dole (R) N |
| 1979 | Joseph E. Brennan (D) | 19R, 13D, 1I | 77D, 73R, 1ID | Edmund Muskie (D) | William Cohen (R) | David F. Emery (R) | Olympia Snowe (R) | Gerald Ford/ Bob Dole (R) N |
| 1980 | Joseph E. Brennan (D) | 19R, 13D, 1I | 77D, 73R, 1ID | George J. Mitchell (D) | William Cohen (R) | David F. Emery (R) | Olympia Snowe (R) | Ronald Reagan/ George H. W. Bush (R) Y |
| 1981 | Joseph E. Brennan (D) | 17R, 16D | 84D, 67R | George J. Mitchell (D) | William Cohen (R) | David F. Emery (R) | Olympia Snowe (R) | Ronald Reagan/ George H. W. Bush (R) Y |
| 1982 | Joseph E. Brennan (D) | 17R, 16D | 84D, 67R | George J. Mitchell (D) | William Cohen (R) | David F. Emery (R) | Olympia Snowe (R) | Ronald Reagan/ George H. W. Bush (R) Y |
| 1983 | Joseph E. Brennan (D) | 23D, 10R | 92D, 59R | George J. Mitchell (D) | William Cohen (R) | Jock McKernan (R) | Olympia Snowe (R) | Ronald Reagan/ George H. W. Bush (R) Y |
| 1984 | Joseph E. Brennan (D) | 23D, 10R | 92D, 59R | George J. Mitchell (D) | William Cohen (R) | Jock McKernan (R) | Olympia Snowe (R) | Ronald Reagan/ George H. W. Bush (R) Y |
| 1985 | Joseph E. Brennan (D) | 24D, 11R | 83D, 68R | George J. Mitchell (D) | William Cohen (R) | Jock McKernan (R) | Olympia Snowe (R) | Ronald Reagan/ George H. W. Bush (R) Y |
| 1986 | Joseph E. Brennan (D) | 24D, 11R | 83D, 68R | George J. Mitchell (D) | William Cohen (R) | Jock McKernan (R) | Olympia Snowe (R) | Ronald Reagan/ George H. W. Bush (R) Y |
| 1987 | Jock McKernan (R) | 20D, 15R | 86D, 65R | George J. Mitchell (D) | William Cohen (R) | Joseph E. Brennan (D) | Olympia Snowe (R) | Ronald Reagan/ George H. W. Bush (R) Y |
| 1988 | Jock McKernan (R) | 20D, 15R | 86D, 65R | George J. Mitchell (D) | William Cohen (R) | Joseph E. Brennan (D) | Olympia Snowe (R) | George H. W. Bush/ Dan Quayle (R) Y |
| 1989 | Jock McKernan (R) | 20D, 15R | 97D, 54R | George J. Mitchell (D) | William Cohen (R) | Joseph E. Brennan (D) | Olympia Snowe (R) | George H. W. Bush/ Dan Quayle (R) Y |
| 1990 | Jock McKernan (R) | 20D, 15R | 97D, 54R | George J. Mitchell (D) | William Cohen (R) | Joseph E. Brennan (D) | Olympia Snowe (R) | George H. W. Bush/ Dan Quayle (R) Y |
| 1991 | Jock McKernan (R) | 21D, 14R | 97D, 54R | George J. Mitchell (D) | William Cohen (R) | Thomas Andrews (D) | Olympia Snowe (R) | George H. W. Bush/ Dan Quayle (R) Y |
| 1992 | Jock McKernan (R) | 21D, 14R | 97D, 54R | George J. Mitchell (D) | William Cohen (R) | Thomas Andrews (D) | Olympia Snowe (R) | Bill Clinton/ Al Gore (D) Y |
| 1993 | Jock McKernan (R) | 20D, 15R | 90D, 61R | George J. Mitchell (D) | William Cohen (R) | Thomas Andrews (D) | Olympia Snowe (R) | Bill Clinton/ Al Gore (D) Y |
| 1994 | Jock McKernan (R) | 20D, 15R | 90D, 61R | George J. Mitchell (D) | William Cohen (R) | Thomas Andrews (D) | Olympia Snowe (R) | Bill Clinton/ Al Gore (D) Y |
| 1995 | Angus King (I) | 18R, 16D, 1I | 77D, 74R | Olympia Snowe (R) | William Cohen (R) | Jim Longley (R) | John Baldacci (D) | Bill Clinton/ Al Gore (D) Y |
| 1996 | Angus King (I) | 18R, 16D, 1I | 77D, 74R | Olympia Snowe (R) | William Cohen (R) | Jim Longley (R) | John Baldacci (D) | Bill Clinton/ Al Gore (D) Y |
| 1997 | Angus King (I) | 19D, 15R, 1I | 81D, 69R, 1I | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | John Baldacci (D) | Bill Clinton/ Al Gore (D) Y |
| 1998 | Angus King (I) | 19D, 15R, 1I | 81D, 69R, 1I | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | John Baldacci (D) | Bill Clinton/ Al Gore (D) Y |
| 1999 | Angus King (I) | 20D, 14R, 1I | 79D, 71R, 1I | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | John Baldacci (D) | Bill Clinton/ Al Gore (D) Y |
| 2000 | Angus King (I) | 20D, 14R, 1I | 79D, 71R, 1I | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | John Baldacci (D) | Al Gore/ Joe Lieberman (D) N |
| 2001 | Angus King (I) | 17R, 17D, 1I | 88D, 62R, 1I | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | John Baldacci (D) | Al Gore/ Joe Lieberman (D) N |
| 2002 | Angus King (I) | 17R, 17D, 1I | 88D, 62R, 1I | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | John Baldacci (D) | Al Gore/ Joe Lieberman (D) N |
| 2003 | John Baldacci (D) | 18D, 17R | 80D, 67R, 3I, 1G | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | Mike Michaud (D) | Al Gore/ Joe Lieberman (D) N |
| 2004 | John Baldacci (D) | 18D, 17R | 80D, 67R, 3I, 1G | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | Mike Michaud (D) | John Kerry/ John Edwards (D) N |
| 2005 | John Baldacci (D) | 18D, 17R | 76D, 73R, 1I, 1G | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | Mike Michaud (D) | John Kerry/ John Edwards (D) N |
| 2006 | John Baldacci (D) | 18D, 17R | 76D, 73R, 1I, 1G | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | Mike Michaud (D) | John Kerry/ John Edwards (D) N |
| 2007 | John Baldacci (D) | 18D, 17R | 90D, 59R, 2I | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | Mike Michaud (D) | John Kerry/ John Edwards (D) N |
| 2008 | John Baldacci (D) | 18D, 17R | 90D, 59R, 2I | Olympia Snowe (R) | Susan Collins (R) | Tom Allen (D) | Mike Michaud (D) | Barack Obama/ Joe Biden (D) Y |
| 2009 | John Baldacci (D) | 20D, 15R | 95D, 55R, 1I | Olympia Snowe (R) | Susan Collins (R) | Chellie Pingree (D) | Mike Michaud (D) | Barack Obama/ Joe Biden (D) Y |
| 2010 | John Baldacci (D) | 20D, 15R | 95D, 55R, 1I | Olympia Snowe (R) | Susan Collins (R) | Chellie Pingree (D) | Mike Michaud (D) | Barack Obama/ Joe Biden (D) Y |
| 2011 | Paul LePage (R) | 20R, 14D, 1I | 78R, 72D, 1I | Olympia Snowe (R) | Susan Collins (R) | Chellie Pingree (D) | Mike Michaud (D) | Barack Obama/ Joe Biden (D) Y |
| 2012 | Paul LePage (R) | 20R, 14D, 1I | 78R, 72D, 1I | Olympia Snowe (R) | Susan Collins (R) | Chellie Pingree (D) | Mike Michaud (D) | Barack Obama/ Joe Biden (D) Y |
| 2013 | Paul LePage (R) | 19D, 15R, 1I | 89D, 58R, 4I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Mike Michaud (D) | Barack Obama/ Joe Biden (D) Y |
| 2014 | Paul LePage (R) | 19D, 15R, 1I | 89D, 58R, 4I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Mike Michaud (D) | Barack Obama/ Joe Biden (D) Y |
| 2015 | Paul LePage (R) | 20R, 15D | 78D, 68R, 5I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Bruce Poliquin (R) | Barack Obama/ Joe Biden (D) Y |
| 2016 | Paul LePage (R) | 20R, 15D | 78D, 69R, 4I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Bruce Poliquin (R) | 3 – Hillary Clinton/ Tim Kaine (D) N 1 – Donald Trump/ Mike Pence (R) Y |
| 2017 | Paul LePage (R) | 18R, 17D | 77D, 73R, 1I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Bruce Poliquin (R) | 3 – Hillary Clinton/ Tim Kaine (D) N 1 – Donald Trump/ Mike Pence (R) Y |
| 2018 | Paul LePage (R) | 18R, 17D | 74D, 70R, 6I, 1G | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Bruce Poliquin (R) | 3 – Hillary Clinton/ Tim Kaine (D) N 1 – Donald Trump/ Mike Pence (R) Y |
| 2019 | Janet Mills (D) | 21D, 14R | 89D, 56R, 6I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Jared Golden (D) | 3 – Hillary Clinton/ Tim Kaine (D) N 1 – Donald Trump/ Mike Pence (R) Y |
| 2020 | Janet Mills (D) | 21D, 14R | 89D, 56R, 6I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Jared Golden (D) | 3 – Joe Biden/ Kamala Harris (D) Y 1 – Donald Trump/ Mike Pence (R) N |
| 2021 | Janet Mills (D) | 22D, 13R | 80D, 67R, 4I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Jared Golden (D) | 3 – Joe Biden/ Kamala Harris (D) Y 1 – Donald Trump/ Mike Pence (R) N |
| 2022 | Janet Mills (D) | 22D, 13R | 80D, 67R, 4I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Jared Golden (D) | 3 – Joe Biden/ Kamala Harris (D) Y 1 – Donald Trump/ Mike Pence (R) N |
| 2023 | Janet Mills (D) | 22D, 13R | 81D, 68R, 2I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Jared Golden (D) | 3 – Joe Biden/ Kamala Harris (D) Y 1 – Donald Trump/ Mike Pence (R) N |
| 2024 | Janet Mills (D) | 22D, 13R | 81D, 68R, 2I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Jared Golden (D) | 3 – Kamala Harris/ Tim Walz (D) N 1 – Donald Trump/ J.D. Vance (R) Y |
| 2025 | Janet Mills (D) | 20D, 15R | 76D, 73R, 2I | Angus King (I) | Susan Collins (R) | Chellie Pingree (D) | Jared Golden (D) | 3 – Kamala Harris/ Tim Walz (D) N 1 – Donald Trump/ J.D. Vance (R) Y |
* Alaskan Independence (AKIP)
* Know Nothing (KN)
* American Labor (AL)
* Anti-Jacksonian (Anti-J) National Republican (NR)
* Anti-Administration (AA)
* Anti-Masonic (Anti-M)
* Conservative (Con)
* Covenant (Cov)
* Democratic (D)
* Democratic–Farmer–Labor (DFL)
* Democratic–NPL (D-NPL)
* Dixiecrat (Dix), States' Rights (SR)
* Democratic-Republican (DR)
* Farmer–Labor (FL)
* Federalist (F) Pro-Administration (PA)
* Free Soil (FS)
* Fusion (Fus)
* Greenback (GB)
* Independence (IPM)
* Independent Democrat (ID)
* Independent Republican (IR)
* Jacksonian (J)
* Liberal (Lib)
* Libertarian (L)
* National Union (NU)
* Nonpartisan League (NPL)
* Nullifier (N)
* Opposition Northern (O) Opposition Southern (O)
* Populist (Pop)
* Progressive (Prog)
* Prohibition (Proh)
* Readjuster (Rea)
* Republican (R)
* Silver (Sv)
* Silver Republican (SvR)
* Socialist (Soc)
* Union (U)
* Unconditional Union (UU)
* Vermont Progressive (VP)
* Whig (W)
* Independent (I)
* Nonpartisan (NP)
* ↑ Resigned to take appointment as a minister to negotiate a treaty with Spain.
* 1 2 Elected at-large on a general ticket.
* 1 2 3 4 5 6 7 As president of the state Senate, filled unexpired term.
* ↑ Resigned to take an elected seat in the United States House of Representatives.
* 1 2 3 As speaker of the state House, filled unexpired term.
* 1 2 3 4 5 6 7 8 9 Resigned.
* 1 2 3 4 5 6 7 Died in office.
* ↑ As president of the state Senate, filled unexpired term until his Senate term expired.
* ↑ A Democrat, Nathan Clifford, was elected as Speaker.
* ↑ A Democrat, Hannibal Hamlin, was elected as Speaker.
* ↑ Won a close election, but Democrats challenged the election. He was finally declared the winner by the state Supreme Court and sworn in on January 19, 1838.
* ↑ A Whig, Josiah S. Little, was elected as Speaker.
* 1 2 Resigned to take an elected seat in the United States Senate.
* ↑ A Democrat, David Dunn, was elected as Speaker.
* ↑ Resigned to take an elected seat as Governor.
* 1 2 Due to a constitutional change in when elected officials took office, legislators elected in 1850 had a two-year term.
* ↑ A coalition of Whigs, Free Soilers, and Morrill Democrats elected Noah Smith Jr., a Whig, as Speaker, and organized the chamber.
* ↑ A coalition of Republicans and Whigs elected Sidney Perham, a Republican, as Speaker, and organized the chamber.
* ↑ A Democrat, Josiah S. Little, was elected as a minority-party Speaker.
* ↑ Resigned to become Vice President of the United States.
* ↑ A Democrat, Charles A. Spofford, was elected as a minority-party Speaker.
* ↑ A coalition of Democrats, Greenbacks, and Independents supported Melvin P. Frank, a Democrat, as Speaker and organized the House.
* ↑ As president of the senate, filled unexpired term, and was later elected in his own right.
* ↑ A power-sharing agreement was negotiated between the Democrats and Republicans, with a Democrat, Mike Michaud, becoming Senate President for one year in 2001, and a Republican, Rick Bennett, becoming Senate President for one year in 2002.
* ↑ Democrat Michael Willette switched to the Republican Party prior to the start of the 2011 session.
* ↑ As Senator, King has consistently caucused with the Senate Democratic Caucus.
* 1 2 3 The Democratic ticket received Maine's two at-large votes and one vote in the First Congressional District while the Republican ticket received one vote in the Second District.