1820–21 United States House of Representatives elections

The 1820–21 United States House of Representatives elections were held on various dates in various states between July 3, 1820, and August 10, 1821. Each state set its own date for its elections to the House of Representatives before the first session of the 17th United States Congress convened on December 3, 1821. They coincided with President James Monroe winning reelection unopposed.

In March 1820, seven House seats transferred from Massachusetts to Maine after the latter seceded from the former to become a separate state. The size of the House then increased to 187 seats after Missouri achieved statehood in 1821.

The virtually nonpartisan Era of Good Feelings, a period of national political dominance by the Democratic-Republican Party, continued. Despite small gains, the Federalist Party remained relegated to limited state and local influence.

Election summaries One seat was added during this Congress for the new State of Missouri + ↓ 155 32 Democratic-Republican Federalist State Type ↑ Date Totalseats Democratic-Republican Federalist Seats Change Seats Change Louisiana At-large July 3–5, 1820 1 1 0 Illinois At-large August 7, 1820 1 1 0 Indiana At-large August 7, 1820 1 1 0 Kentucky Districts August 7, 1820 10 10 0 Mississippi At-large August 7–8, 1820 1 1 0 New Hampshire At-large August 18, 1820 6 6 0 Missouri At-large August 28, 1820 1 1 1 0 Rhode Island At-large August 29, 1820 2 2 0 Vermont District September 5, 1820 6 6 0 Georgia At-large October 2, 1820 6 6 0 Maryland Districts October 2, 1820 9 6 3 Delaware At-large October 3, 1820 2 1 1 South Carolina Districts October 9–10, 1820 9 9 0 Ohio Districts October 10, 1820 6 6 1 0 1 Pennsylvania Districts October 10, 1820 23 15 4 8 4 Massachusetts Districts November 6, 1820 13 6 1 7 1 Maine Districts November 7, 1820 7 5 1 2 1 New Jersey At-large November 7, 1820 6 6 0 Late elections (after the March 4, 1821, beginning of the term) Virginia Districts April 1821 23 21 1 2 1 Connecticut At-large April 2, 1821 7 7 0 New York Districts April 24–26, 1821 27 19 2 8 2 Alabama At-large August 5–6, 1821 1 1 0 North Carolina Districts August 9, 1821 13 12 2 1 2 Tennessee Districts August 9–10, 1821 6 5 1 0 Total 187 155 5 32 6

Special elections

There were special elections in 1820 and 1821 to the 16th United States Congress and 17th United States Congress.

Special elections are sorted by date then district.

16th Congress

! | James Pleasants | | Democratic-Republican | 1817 | | Incumbent resigned December 14, 1819, when elected U.S. Senator.New member elected January 3, 1820 and seated January 18, 1820.Democratic-Republican hold.Winner later re-elected to the next term; see below. | nowrap |

! | John Condit | | Democratic-Republican | 1818 | | Incumbent resigned November 4, 1819, to become assistant collector of the Port of New York.New member elected February 2, 1820 and seated February 16, 1820.Democratic-Republican hold.Winner was not a candidate for the next term; see below. | nowrap |

! | George F. Strother | | Democratic-Republican | 1817 | | Incumbent resigned February 10, 1820, to become as Receiver of Public Monies in St. Louis, Missouri.New member elected in August 1820 and seated November 13, 1820.Democratic-Republican hold.Winner later re-elected to the next term; see below. | nowrap |

! | James Johnson | | Democratic-Republican | 1813 | | Incumbent resigned when appointed as collector of customs in Norfolk.New member elected in 1820 and seated November 13, 1820.Democratic-Republican hold.Winner later lost re-election to the next term; see below. | nowrap |

! | John Holmes | | Democratic-Republican | 1816 | | Incumbent's seat moved from but incumbent resigned when elected U.S. Senator.New member elected November 7, 1820 and seated December 11, 1820.Federalist gain.Winner was also elected in the election to the next term; see below. | nowrap |

! | Joseph Hiester | | Democratic-Republican | 17981804 1814 | | Incumbent resigned in December 1820 when elected Governor of Pennsylvania.New member elected December 10, 1820 and seated January 8, 1821.Democratic-Republican hold.Winner was not a candidate for election to the next term; see below. | nowrap |

17th Congress

Alabama

Alabama elected its member August 5–6, 1821, after the term began but before the new Congress convened.

Arkansas Territory See Non-voting delegates, below.

Connecticut

Connecticut elected its members April 2, 1821, after the term began but before the new Congress convened.

Delaware

Delaware elected its members October 3, 1820.

Georgia

Georgia elected its members October 2, 1820.

Illinois

Illinois elected its member August 7, 1820.

Indiana

Indiana elected its member August 7, 1820.

Kentucky

Kentucky elected its members August 7, 1820.

Louisiana

Louisiana elected its member July 3–5, 1820.

1820–21 United States House of Representatives elections

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