| Election Name: | 1820–21 United States Senate elections |
| Country: | United States |
| Flag Year: | 1820 |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 1818–19 United States Senate elections |
| Next Election: | 1822–23 United States Senate elections |
| Seats For Election: | 15 of the 46 seats in the United States Senate (plus special elections) |
| Majority Seats: | 24 |
| Election Date: | Dates vary by state |
| 1Blank: | Seats up |
| Party1: | Democratic-Republican Party |
| Last Election1: | 30 seats |
| Seats Before1: | 37 |
| Seats1: | 11 |
| Seats After1: | 38 |
| Seat Change1: | 1 |
| 1Data1: | 10 |
| Party2: | Federalist Party |
| Last Election2: | 9 seats |
| Seats Before2: | 9 |
| Seats2: | 1 |
| Seats After2: | 5 |
| Seat Change2: | 4 |
| 1Data2: | 5 |
| Majority Party | |
| Before Party: | Democratic-Republican Party |
| After Party: | Democratic-Republican Party |
The 1820–21 United States Senate elections were held on various dates in various states, corresponding with James Monroe's landslide re-election. As these U.S. Senate elections were prior to the ratification of the Seventeenth Amendment in 1913, senators were chosen by state legislatures. Senators were elected over a wide range of time throughout 1820 and 1821, and a seat may have been filled months late or remained vacant due to legislative deadlock.[1] In these elections, terms were up for the senators in Class 1.
The Democratic-Republican Party gain one-to-five seats (in the general and special elections), assuming almost complete control of the Senate.
Senate party division, 17th Congress (1821–1823)
Composition after the June 13 and 14, 1820 elections in Maine.
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Bold states link to specific election articles.
In these special elections, the winner was elected during 1820 or before March 4, 1821; ordered by election date.
| State | Incumbent | Results | Candidates | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Senator | Party | Electoral history | |||||||
| New York (Class 3) | Vacant | Legislature had failed to elect in 1818/1819. Previous incumbent was elected January 8, 1820. Federalist gain. | nowrap | ||||||
| Massachusetts (Class 1) | Prentiss Mellen | Federalist | 1820 | Incumbent resigned to become Chief Justice of Maine. New senator elected June 12, 1820. Winner was also elected to the next term. Federalist hold. | nowrap | ||||
| Maine (Class 1) | New state | New senator elected June 13, 1820 on the second ballot. Winner was also elected to the next term. Democratic-Republican gain. | nowrap | ||||||
| Maine (Class 2) | New senator elected June 14, 1820. Democratic-Republican gain. | nowrap | |||||||
| Mississippi (Class 1) | Walter Leake | Democratic- Republican | 1817 | Incumbent resigned May 15, 1820. New senator elected August 30, 1820. Winner was also elected to the next term. Democratic-Republican hold. | nowrap | ||||
| Kentucky (Class 3) | William Logan | Democratic- Republican | 1818 | Incumbent resigned May 28, 1820, to run for Governor of Kentucky. New senator elected October 19, 1820. Democratic-Republican hold. | nowrap | ||||
| Rhode Island (Class 2) | James Burrill Jr. | Federalist | 1816 | Incumbent died December 25, 1820. New senator elected January 9, 1821. Democratic-Republican gain. | nowrap | ||||
In these general elections, the winner was seated on March 4, 1821; ordered by state.
All of the elections involved the Class 1 seats.
| State | Incumbent | Results | Candidates | |||||
|---|---|---|---|---|---|---|---|---|
| Senator | Party | Electoral history | ||||||
| Connecticut | Samuel Dana | Federalist | 1810 1814 | Unknown if incumbent retired or lost re-election. New senator elected March 4, 1821. Democratic-Republican gain. | nowrap | |||
| Delaware | Outerbridge Horsey | Federalist | 1810 1815 | Incumbent retired. Legislature failed to elect. Federalist loss. A Democratic-Republican was later elected in 1822. | nowrap | |||
| Indiana | James Noble | Democratic- Republican | 1816 | Incumbent re-elected in 1821. | nowrap | |||
| Maine | John Holmes | Democratic- Republican | 1820 | Incumbent re-elected January 31, 1821. | nowrap | |||
| Maryland | William Pinkney | Democratic- Republican | 1819 | Incumbent re-elected in 1820 or 1821. | nowrap | |||
| Massachusetts | Elijah H. Mills | Federalist | 1820 | Incumbent re-elected in 1820.[2] | nowrap | |||
| Mississippi | David Holmes | Democratic- Republican | 1820 | Incumbent re-elected in 1820 or 1821. | nowrap | |||
| New Jersey | James J. Wilson | Democratic- Republican | 1815 | Incumbent lost re-election. New senator elected November 11, 1820.[3] Democratic-Republican hold. Incumbent then resigned January 8, 1821, and winner was appointed to finish the term. | nowrap | |||
| New York | Nathan Sanford | Democratic- Republican | 1809 | Incumbent lost re-election. New senator elected February 6, 1821. Democratic-Republican hold. | nowrap | |||
| Ohio | Benjamin Ruggles | Democratic- Republican | 1815 | Incumbent re-elected in 1820 or 1821. | nowrap | |||
| Pennsylvania | Jonathan Roberts | Democratic- Republican | 1814 1814 | Legislature failed to elect. Democratic-Republican loss. New senator would later be elected in 1821. | nowrap | |||
| Rhode Island | William Hunter | Federalist | 1811 1814 | Unknown if incumbent retired or lost re-election. New senator elected in 1820 or 1821. Democratic-Republican gain. | nowrap | |||
| Tennessee | John H. Eaton | Democratic- Republican | 1818 1819 | Legislature failed to elect Democratic-Republican loss. New senator would later be elected September 27, 1821, see below.[4] | nowrap | |||
| Vermont | Isaac Tichenor | Federalist | 1796 1796 1797 1814 | Incumbent retired. New senator elected in 1821. Democratic-Republican gain. | nowrap | |||
| Virginia | James Barbour | Democratic- Republican | 1814 1814 | Incumbent re-elected in 1821. | nowrap | |||
In this special election, the winner was elected in 1821 after March 4; ordered by election date.
| State | Incumbent | Results | Candidates | |||||
|---|---|---|---|---|---|---|---|---|
| Senator | Party | Electoral history | ||||||
| Missouri (Class 1) | New state | New senator elected August 10, 1821. Democratic-Republican gain. | nowrap | |||||
| Missouri (Class 3) | New senator elected August 10, 1821. Democratic-Republican gain. | nowrap | ||||||
| Tennessee (Class 1) | Vacant | Legislature had failed to elect. New senator re-elected late September 27, 1821. Democratic-Republican gain. | nowrap | |||||
| Georgia (Class 2) | Freeman Walker | Democratic- Republican | 1819 | Incumbent resigned August 6, 1821. New senator elected November 10, 1821. Democratic-Republican hold. | nowrap | |||
| Pennsylvania (Class 1) | Vacant | Legislature had failed to elect. New senator elected December 10, 1821. Democratic-Republican gain. | nowrap | |||||
See also: List of United States senators from Connecticut.
See also: List of United States senators from Delaware.
See also: List of United States senators from Georgia.
See also: List of United States senators from Indiana.
See also: List of United States senators from Kentucky.
See also: List of United States senators from Maine. John Holmes (Democratic-Republican) was elected as one of the new states first pair of senators whose terms began with June 13, 1820, statehood. He was elected to the class 1 seat's short term, which ended March 3, 1821, and was re-elected January 31, 1821, to the term starting March 4, 1821.
John Chandler (Democratic-Republican) as elected to the class 2 seat's long term, and his term would end March 3, 1823.
See also: List of United States senators from Maryland.
| Election Name: | 1821 United States Senate election in Maryland |
| Popular Vote1: | - |
| Colour1: | AACC99 |
| Percentage1: | -% |
| Party1: | Democratic-Republican |
| Candidate1: | William Pinkney |
| Image1: | William Pinkney (NYPL Hades-256737-EM15101) (cropped).jpg |
| Next Year: | 1822 |
| Next Election: | 1822 United States Senate special election in Maryland |
| Previous Year: | 1819 |
| Previous Election: | 1819 United States Senate special election in Maryland |
| Votes For Election: | 80 members of the Maryland General Assembly |
| Vote Type: | Legislative |
| Election Date: | December 7, 1821 |
| Type: | presidential |
William Pinkney won election by an unknown number of votes, for the Class 1 seat.[5]
See also: List of United States senators from Massachusetts.
See also: List of United States senators from Mississippi.
See also: List of United States senators from Missouri.
See also: List of United States senators from New Jersey.
See also: List of United States senators from New York.
See main article: 1821 United States Senate election in New York.
See also: List of United States senators from Ohio.
See main article: 1820–1821 United States Senate election in Pennsylvania.
See also: List of United States senators from Pennsylvania.
See also: List of United States senators from Rhode Island.
See also: List of United States senators from Tennessee.
See also: List of United States senators from Vermont.
See also: List of United States senators from Virginia.