# 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 | Total seats | Democratic-Republican | Democratic-Republican | Federalist | Federalist |
| State | Type | ↑ Date | Total seats | 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 | Total | Total | 187 | 155 82.9% | 5 | 32 17.1% | 6 |
House seats
Dem-Republican
82.89%
Federalist
17.11% :

## 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

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member / Delegate | Party | First elected | Results | Candidates |
| Virginia 17 | 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. | ▌Y William S. Archer (Democratic-Republican) ▌James Robertson (Unknown) |
| New Jersey at-large | 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. | ▌Y Charles Kinsey (Democratic-Republican) 62.2% ▌James Parker (Unknown) 10.1% ▌George Cassedy (Democratic-Republican) 5.1% ▌Lewis Condict (Democratic-Republican) 3.4% ▌Ebenezer Elmer (Democratic-Republican) 3.3% ▌Gerard Rutgers (Unknown) 3.2% ▌John Rutherford (Unknown) 2.9% ▌Charles Kinsey (Democratic-Republican) 2.2% ▌James D. Westcott (Unknown) 1.4% ▌Thomas T. Kinney (Unknown) 1.1% Scattering 5.1% |
| Virginia 10 | 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. | ▌Y Thomas L. Moore (Democratic-Republican) 41.0% ▌Zephaniah Turner (Unknown) 27.5% ▌John Love (Democratic-Republican) 27.0% ▌Mark A. Chilton (Unknown) 4.5% |
| Michigan Territory at-large | William Woodbridge | Unknown | 1819 | Incumbent resigned August 9, 1820, due to family illness. New delegate elected in 1820 and seated November 20, 1820. Winner later re-elected; see below. | ▌Y Solomon Sibley (Democratic-Republican) 41.4% ▌Augustus B. Woodward (Unknown) 40.0% ▌James MacClosky (Unknown) 17.3% ▌Jonathan R. Williams (Unknown) 1.4% |
| Virginia 1 | James Pindall | Federalist | 1817 | Incumbent resigned July 6, 1820. New member elected in 1820 and seated November 13, 1820. Democratic-Republican gain. Winner later re-elected to the next term; see below. | ▌Y Edward B. Jackson (Democratic-Republican) 60.6% ▌Isaac Leffler (Unknown) 35.4% ▌Thomas P. Moore (Democratic-Republican) 4.0% |
| Virginia 20 | 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. | ▌Y John C. Gray (Democratic-Republican) 52.6% ▌Arthur Smith (Democratic-Republican) 47.4% |
| Kentucky 9 | Tunstall Quarles | Democratic- Republican | 1816 | Incumbent resigned June 15, 1820. New member elected August 7, 1820 and seated November 13, 1820. Democratic-Republican hold. Winner was also elected to the next term; see below. | ▌Y Thomas Montgomery (Democratic-Republican) [data missing] |
| Kentucky 6 | David Walker | Democratic- Republican | 1816 | Incumbent died March 1, 1820. New member elected August 7, 1820 and seated November 13, 1820. Democratic-Republican hold. Winner was also elected to the next term; see below. | ▌Y Francis Johnson (Democratic-Republican) [data missing] |
| Massachusetts 13 | Edward Dowse | Democratic- Republican | 1818 | Incumbent resigned. New member elected August 21, 1820 and seated November 13, 1820. Democratic-Republican hold. Winner was later re-elected to the next term; see below. | ▌Y William Eustis (Democratic-Republican) 56.2% ▌James Richardson (Federalist) 38.4% Scattering 5.4% |
| Pennsylvania 5 | David Fullerton | Democratic- Republican | 1818 | Incumbent resigned May 15, 1820. New member elected October 10, 1820 and seated November 13, 1820. Federalist gain. Winner was not a candidate for election to the next term; see below. | ▌Y Thomas G. McCullough (Federalist) 51.4% ▌Matthew S. Clarke (Democratic-Republican) 43.3% ▌Robert K. Lowry (Independent) 5.4% |
| Massachusetts 1 | Jonathan Mason | Federalist | 1817 (special) | Incumbent resigned May 15, 1820, to pursue his law practice. New member elected on the second ballot November 6, 1820 and seated November 27, 1820. Democratic-Republican gain. Winner also elected to the next term; see below. | First ballot (October 23, 1820) ▌Benjamin Gorham (Democratic-Republican) 48.3% ▌Henry Orne (Democratic-Republican) 26.1% ▌Samuel Wells (Independent) 25.6% Second ballot (November 6, 1820) ▌Y Benjamin Gorham (Democratic-Republican) 58.0% ▌Samuel Wells (Independent) 40.1% ▌Jesse Putnam (Unknown) 1.4% Scattering 0.5% |
| Maine at-large | John Holmes | Democratic- Republican | 1816 | Incumbent's seat moved from Massachusetts's 14th district 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 1st district election to the next term; see below. | ▌Y Joseph Dane (Federalist) 53.6% ▌Alexander Rice (Democratic-Republican) 38.2% ▌Isaac Lyman (Unknown) 4.5% ▌William Moody (Unknown) 2.3% Others 1.0% |
| Massachusetts 8 | Zabdiel Sampson | Democratic- Republican | 1817 | Incumbent resigned July 26, 1820. New member elected November 24, 1820 and seated December 18, 1820. Winner had already been elected to the next term; see below. | First ballot (October 16, 1820) ▌Aaron Hobart (Democratic-Republican) 52.1% ▌William Baylies (Federalist) 47.9% Second ballot (November 24, 1820) ▌Y Aaron Hobart (Democratic-Republican) 68.7% Scattering 31.3% |
| Pennsylvania 7 | Joseph Hiester | Democratic- Republican | 1798 1804 (retired) 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. | ▌Y Daniel Udree (Democratic-Republican) ▌Ludwig Worman (Federalist) |
| North Carolina 4 | Jesse Slocumb | Democratic- Republican | 1817 | Incumbent died December 20, 1820. New member elected February 7, 1821 and seated February 7, 1821. Democratic-Republican hold. Winner later re-elected to the next term; see below. | ▌Y William S. Blackledge (Democratic-Republican) 57.7% ▌Barnabus MacKinnie (Unknown) 42.3% |

### 17th Congress

| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Kentucky 7 | George Robertson | Democratic- Republican | 1816 | Incumbent resigned sometime before the start of the new Congress. New member elected August 6, 1821 and seated December 3, 1821. Democratic-Republican hold. | ▌Y John S. Smith (Democratic-Republican) ▌Stephen Richardson (Unknown) |
| New Jersey at-large | John Linn | Democratic- Republican | 1816 | Incumbent died January 5, 1821. New member elected October 8, 1821 and seated December 3, 1821. Democratic-Republican hold. | ▌Y Lewis Condict (Democratic-Republican) 46.5% ▌Robert W. Rutherford (Democratic-Republican) 31.3% ▌James Parker (Federalist) 22.2% |
| Ohio 4 | John C. Wright | Democratic- Republican | 1818 | Incumbent member-elect declined to serve in the next term and resigned March 3, 1821. New member elected October 9, 1821 and seated December 3, 1821. Democratic-Republican hold. | ▌Y David Chambers (Democratic-Republican) ▌John Patterson (Democratic-Republican) |
| Pennsylvania 5 | James Duncan | Democratic- Republican | 1820 | Incumbent resigned in April 1821. New member elected October 9, 1821 and seated December 12, 1821. Democratic-Republican hold. | ▌Y John Findlay (Democratic-Republican) 53.6% ▌Thomas G. McCullough (Federalist) 46.4% |
| Pennsylvania 10 | William Cox Ellis | Federalist | 1820 | Incumbent resigned July 20, 1821. New member elected October 9, 1821 and seated December 12, 1821. Democratic-Republican hold. | ▌Y Thomas Murray Jr. (Democratic-Republican) 50.3% ▌William Cox Ellis (Federalist) 49.7% |
| New York 6 | Selah Tuthill | Democratic- Republican | 1821 | Incumbent died September 7, 1821. New member elected November 6–8, 1821 and seated December 3, 1821. Democratic-Republican hold. | ▌Y Charles Borland Jr. (Democratic-Republican) 53.7% ▌John Duer (Democratic-Republican) 46.1% |
| South Carolina 9 | John S. Richards | Democratic- Republican | 1820 | Member-elect declined to serve. New member elected in 1821 and seated December 3, 1821. Democratic-Republican hold. | ▌Y James Blair (Democratic-Republican) 49.1% ▌Joseph Brevard (Democratic-Republican) 43.6% ▌James C. Postell (Unknown) 7.3% |
| Kentucky 8 | Wingfield Bullock | Democratic- Republican | 1820 | Incumbent died October 13, 1821. New member elected November 22, 1821 and seated January 2, 1822. Democratic-Republican hold. | ▌Y James D. Breckinridge (Democratic-Republican) 56.3% ▌George B. Knight (Unknown) 39.2% ▌Norborne B. Beall (Unknown) 4.4% |

## Alabama

Alabama elected its member August 5–6, 1821, after the term began but before the new Congress convened.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Alabama at-large | John Crowell | Democratic- Republican | 1819 | Incumbent retired. Democratic-Republican hold. | ▌Y Gabriel Moore (Democratic-Republican) 64.6% ▌George W. Owen (Democratic-Republican) 32.6% ▌Silas Dinsmoor (Unknown) 2.8% |

## 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.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Connecticut at-large 7 seats on a general ticket | James Stevens | Democratic-Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y Gideon Tomlinson (Democratic-Republican) 14.3% ▌Y Noyes Barber (Democratic-Republican) 13.8% ▌Y Henry W. Edwards (Democratic-Republican) 13.7% ▌Y John Russ (Democratic-Republican) 13.5% ▌Y Ebenezer Stoddard (Democratic-Republican) 13.4% ▌Y Ansel Sterling (Democratic-Republican) 13.1% ▌Y Daniel Burrows (Democratic-Republican) 9.6% ▌Calvin Willey (Democratic-Republican) 4.1% ▌Timothy Pitkin (Federalist) 1.0% Others 3.5% |
| Connecticut at-large 7 seats on a general ticket | Jonathan O. Moseley | Democratic-Republican | 1804 | Incumbent retired. Democratic-Republican hold. | ▌Y Gideon Tomlinson (Democratic-Republican) 14.3% ▌Y Noyes Barber (Democratic-Republican) 13.8% ▌Y Henry W. Edwards (Democratic-Republican) 13.7% ▌Y John Russ (Democratic-Republican) 13.5% ▌Y Ebenezer Stoddard (Democratic-Republican) 13.4% ▌Y Ansel Sterling (Democratic-Republican) 13.1% ▌Y Daniel Burrows (Democratic-Republican) 9.6% ▌Calvin Willey (Democratic-Republican) 4.1% ▌Timothy Pitkin (Federalist) 1.0% Others 3.5% |
| Connecticut at-large 7 seats on a general ticket | Gideon Tomlinson | Democratic-Republican | 1818 | Incumbent re-elected. | ▌Y Gideon Tomlinson (Democratic-Republican) 14.3% ▌Y Noyes Barber (Democratic-Republican) 13.8% ▌Y Henry W. Edwards (Democratic-Republican) 13.7% ▌Y John Russ (Democratic-Republican) 13.5% ▌Y Ebenezer Stoddard (Democratic-Republican) 13.4% ▌Y Ansel Sterling (Democratic-Republican) 13.1% ▌Y Daniel Burrows (Democratic-Republican) 9.6% ▌Calvin Willey (Democratic-Republican) 4.1% ▌Timothy Pitkin (Federalist) 1.0% Others 3.5% |
| Connecticut at-large 7 seats on a general ticket | Elisha Phelps | Democratic-Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Gideon Tomlinson (Democratic-Republican) 14.3% ▌Y Noyes Barber (Democratic-Republican) 13.8% ▌Y Henry W. Edwards (Democratic-Republican) 13.7% ▌Y John Russ (Democratic-Republican) 13.5% ▌Y Ebenezer Stoddard (Democratic-Republican) 13.4% ▌Y Ansel Sterling (Democratic-Republican) 13.1% ▌Y Daniel Burrows (Democratic-Republican) 9.6% ▌Calvin Willey (Democratic-Republican) 4.1% ▌Timothy Pitkin (Federalist) 1.0% Others 3.5% |
| Connecticut at-large 7 seats on a general ticket | John Russ | Democratic-Republican | 1818 | Incumbent re-elected. | ▌Y Gideon Tomlinson (Democratic-Republican) 14.3% ▌Y Noyes Barber (Democratic-Republican) 13.8% ▌Y Henry W. Edwards (Democratic-Republican) 13.7% ▌Y John Russ (Democratic-Republican) 13.5% ▌Y Ebenezer Stoddard (Democratic-Republican) 13.4% ▌Y Ansel Sterling (Democratic-Republican) 13.1% ▌Y Daniel Burrows (Democratic-Republican) 9.6% ▌Calvin Willey (Democratic-Republican) 4.1% ▌Timothy Pitkin (Federalist) 1.0% Others 3.5% |
| Connecticut at-large 7 seats on a general ticket | Henry W. Edwards | Democratic-Republican | 1818 | Incumbent re-elected. | ▌Y Gideon Tomlinson (Democratic-Republican) 14.3% ▌Y Noyes Barber (Democratic-Republican) 13.8% ▌Y Henry W. Edwards (Democratic-Republican) 13.7% ▌Y John Russ (Democratic-Republican) 13.5% ▌Y Ebenezer Stoddard (Democratic-Republican) 13.4% ▌Y Ansel Sterling (Democratic-Republican) 13.1% ▌Y Daniel Burrows (Democratic-Republican) 9.6% ▌Calvin Willey (Democratic-Republican) 4.1% ▌Timothy Pitkin (Federalist) 1.0% Others 3.5% |
| Connecticut at-large 7 seats on a general ticket | Samuel A. Foot | Democratic-Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Gideon Tomlinson (Democratic-Republican) 14.3% ▌Y Noyes Barber (Democratic-Republican) 13.8% ▌Y Henry W. Edwards (Democratic-Republican) 13.7% ▌Y John Russ (Democratic-Republican) 13.5% ▌Y Ebenezer Stoddard (Democratic-Republican) 13.4% ▌Y Ansel Sterling (Democratic-Republican) 13.1% ▌Y Daniel Burrows (Democratic-Republican) 9.6% ▌Calvin Willey (Democratic-Republican) 4.1% ▌Timothy Pitkin (Federalist) 1.0% Others 3.5% |

## Delaware

Delaware elected its members October 3, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Delaware at-large 2 seats on a general ticket | Louis McLane | Federalist | 1816 | Incumbent re-elected. | ▌Y Caesar A. Rodney (Democratic-Republican) 26.9% ▌Y Louis McLane (Federalist) 26.1% ▌Willard Hall (Democratic-Republican) 23.5% ▌John Mitchell (Federalist) 23.3% Others 0.2% |
| Delaware at-large 2 seats on a general ticket | Willard Hall | Democratic- Republican | 1816 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Caesar A. Rodney (Democratic-Republican) 26.9% ▌Y Louis McLane (Federalist) 26.1% ▌Willard Hall (Democratic-Republican) 23.5% ▌John Mitchell (Federalist) 23.3% Others 0.2% |

## Georgia

Georgia elected its members October 2, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Georgia at-large 6 seats on a general ticket | Robert R. Reid | Democratic-Republican | 1819 (special) | Incumbent re-elected. | ▌Y Robert R. Reid (Democratic-Republican) 14.8%% ▌Y Alfred Cuthbert (Democratic-Republican) 12.5% ▌Y Joel Abbot (Democratic-Republican) 12.3% ▌Y George R. Gilmer (Democratic-Republican) 11.1% ▌Y Edward F. Tattnall (Democratic-Republican) 11.1% ▌Y Wiley Thompson (Democratic-Republican) 10.7% ▌Thomas W. Cobb (Democratic-Republican) 10.6% ▌George Walton (Unknown) 7.2% ▌Zadock Cook (Democratic-Republican) 4.2% ▌Gibson Clark (Unknown) 2.9% ▌James Blair (Unknown) 2.7% |
| Georgia at-large 6 seats on a general ticket | Joel Crawford | Democratic-Republican | 1816 | Incumbent retired. Democratic-Republican hold. | ▌Y Robert R. Reid (Democratic-Republican) 14.8%% ▌Y Alfred Cuthbert (Democratic-Republican) 12.5% ▌Y Joel Abbot (Democratic-Republican) 12.3% ▌Y George R. Gilmer (Democratic-Republican) 11.1% ▌Y Edward F. Tattnall (Democratic-Republican) 11.1% ▌Y Wiley Thompson (Democratic-Republican) 10.7% ▌Thomas W. Cobb (Democratic-Republican) 10.6% ▌George Walton (Unknown) 7.2% ▌Zadock Cook (Democratic-Republican) 4.2% ▌Gibson Clark (Unknown) 2.9% ▌James Blair (Unknown) 2.7% |
| Georgia at-large 6 seats on a general ticket | Joel Abbot | Democratic-Republican | 1816 | Incumbent re-elected. | ▌Y Robert R. Reid (Democratic-Republican) 14.8%% ▌Y Alfred Cuthbert (Democratic-Republican) 12.5% ▌Y Joel Abbot (Democratic-Republican) 12.3% ▌Y George R. Gilmer (Democratic-Republican) 11.1% ▌Y Edward F. Tattnall (Democratic-Republican) 11.1% ▌Y Wiley Thompson (Democratic-Republican) 10.7% ▌Thomas W. Cobb (Democratic-Republican) 10.6% ▌George Walton (Unknown) 7.2% ▌Zadock Cook (Democratic-Republican) 4.2% ▌Gibson Clark (Unknown) 2.9% ▌James Blair (Unknown) 2.7% |
| Georgia at-large 6 seats on a general ticket | John A. Cuthbert | Democratic-Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y Robert R. Reid (Democratic-Republican) 14.8%% ▌Y Alfred Cuthbert (Democratic-Republican) 12.5% ▌Y Joel Abbot (Democratic-Republican) 12.3% ▌Y George R. Gilmer (Democratic-Republican) 11.1% ▌Y Edward F. Tattnall (Democratic-Republican) 11.1% ▌Y Wiley Thompson (Democratic-Republican) 10.7% ▌Thomas W. Cobb (Democratic-Republican) 10.6% ▌George Walton (Unknown) 7.2% ▌Zadock Cook (Democratic-Republican) 4.2% ▌Gibson Clark (Unknown) 2.9% ▌James Blair (Unknown) 2.7% |
| Georgia at-large 6 seats on a general ticket | William Terrell | Democratic-Republican | 1816 | Incumbent retired. Democratic-Republican hold. | ▌Y Robert R. Reid (Democratic-Republican) 14.8%% ▌Y Alfred Cuthbert (Democratic-Republican) 12.5% ▌Y Joel Abbot (Democratic-Republican) 12.3% ▌Y George R. Gilmer (Democratic-Republican) 11.1% ▌Y Edward F. Tattnall (Democratic-Republican) 11.1% ▌Y Wiley Thompson (Democratic-Republican) 10.7% ▌Thomas W. Cobb (Democratic-Republican) 10.6% ▌George Walton (Unknown) 7.2% ▌Zadock Cook (Democratic-Republican) 4.2% ▌Gibson Clark (Unknown) 2.9% ▌James Blair (Unknown) 2.7% |
| Georgia at-large 6 seats on a general ticket | Thomas W. Cobb | Democratic-Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Robert R. Reid (Democratic-Republican) 14.8%% ▌Y Alfred Cuthbert (Democratic-Republican) 12.5% ▌Y Joel Abbot (Democratic-Republican) 12.3% ▌Y George R. Gilmer (Democratic-Republican) 11.1% ▌Y Edward F. Tattnall (Democratic-Republican) 11.1% ▌Y Wiley Thompson (Democratic-Republican) 10.7% ▌Thomas W. Cobb (Democratic-Republican) 10.6% ▌George Walton (Unknown) 7.2% ▌Zadock Cook (Democratic-Republican) 4.2% ▌Gibson Clark (Unknown) 2.9% ▌James Blair (Unknown) 2.7% |

## Illinois

Illinois elected its member August 7, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Illinois at-large | Daniel P. Cook | Democratic- Republican | 1819 | Incumbent re-elected. | ▌Y Daniel P. Cook (Democratic-Republican) 64.7% ▌Elias Kane (Unknown) 35.2% ▌John McLean (Democratic-Republican) 0.1% |

## Indiana

Indiana elected its member August 7, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Indiana at-large | William Hendricks | Democratic- Republican | 1817 | Incumbent re-elected. | ▌Y William Hendricks (Democratic-Republican) 91.0% ▌Reuben W. Nelson (Unknown) 9.0% |

## Kentucky

Kentucky elected its members August 7, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Kentucky 1 | David Trimble | Democratic-Republican | 1816 | Incumbent re-elected. | ▌Y David Trimble (Democratic-Republican) 68.5% ▌William P. Fleming (Unknown) 31.5% |
| Kentucky 2 | Henry Clay | Democratic-Republican | 1810 1814 (resigned) 1814 1815 (seat declared vacant) 1815 (special) | Incumbent retired. Democratic-Republican hold. | ▌Y Samuel H. Woodson (Democratic-Republican) 59.4% ▌John Pope (Democratic-Republican) 37.8% ▌Thomas T. Barr (Unknown) 2.8% |
| Kentucky 3 | William Brown | Democratic-Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y John T. Johnson (Democratic-Republican) 98.6% ▌Thomas A. Grimes (Unknown) 1.4% |
| Kentucky 4 | Thomas Metcalfe | Democratic-Republican | 1818 | Incumbent re-elected. | ▌Y Thomas Metcalfe (Democratic-Republican) |
| Kentucky 5 | Alney McLean | Democratic-Republican | 1814 1816 (retired) 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y Anthony New (Democratic-Republican) ▌John Daviess (Unknown) ▌Dickson Gwen (Unknown) |
| Kentucky 6 | David Walker | Democratic-Republican | 1816 | Incumbent died March 1, 1820. Democratic-Republican hold. Successor also elected to finish the term. | ▌Y Francis Johnson (Democratic-Republican) 57.2% ▌John Breathitt (Unknown) 41.8% ▌Willis Wills (Unknown) 1.0% |
| Kentucky 7 | George Robertson | Democratic-Republican | 1816 | Incumbent re-elected. Incumbent resigned sometime before the start of the new Congress, leading to an August 6, 1821 special election. | ▌Y George Robertson (Democratic-Republican) |
| Kentucky 8 | Richard C. Anderson Jr. | Democratic-Republican | 1816 | Incumbent retired. Democratic-Republican hold. Successor died October 13, 1821, leading to a November 22, 1821 special election. | ▌Y Wingfield Bullock (Democratic-Republican) ▌Norborne B. Beall (Unknown) ▌Samuel Churchill (Unknown) ▌John Logan (Unknown) |
| Kentucky 9 | Tunstall Quarles | Democratic-Republican | 1816 | Incumbent resigned June 15, 1820. Democratic-Republican hold. Successor also elected to finish the term. | ▌Y Thomas Montgomery (Democratic-Republican) |
| Kentucky 10 | Benjamin Hardin | Democratic-Republican | 1814 1816 (retired) 1818 | Incumbent re-elected. | ▌Y Benjamin Hardin (Democratic-Republican) ▌Richard Rudd (Unknown) ▌John Hays (Unknown) |

## Louisiana

Louisiana elected its member July 3–5, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Louisiana at-large | Thomas Butler | Democratic-Republican | 1818 | Incumbent lost renomination. Democratic-Republican hold. | ▌Y Josiah S. Johnston (Democratic-Republican) 50.9% ▌Edward Livingston (Democratic-Republican) 49.1% |

## Maine

This was the first election in Maine since its separation from Massachusetts. In the previous election, Massachusetts had had 20 representatives. Seven seats (representing the 14th-20th districts) were reassigned from Massachusetts to Maine. In addition, under the terms of the law which admitted Maine to the union, any vacancies in the 16th Congress by Representatives elected to represent Massachusetts but residing in the new states of Maine would be filled by a resident of Maine. John Holmes, who had been elected to the House for the former 14th district of Massachusetts was elected as one of the first two senators for Maine. The vacancy was filled in a special election by Joseph Dane (Federalist). Dane was the only Representative officially considered as representing Maine in the 16th Congress. The Representatives from the 15th-20th districts were still classified as being from Massachusetts for the remainder of the 16th Congress.
Maine elected its members on November 7, 1820. State law required a majority to win an election, necessitating additional ballots if a majority was not received. And, in fact, additional ballots were held on January 22, 1821, and September 10, 1821, after the term began but before the new Congress convened.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Maine 1 | Joseph Dane | Federalist | 1820 (special) | Incumbent re-elected. | ▌Y Joseph Dane (Federalist) 52.8% ▌Alexander Rice (Democratic-Republican) 38.7% ▌Isaac Lyman (Unknown) 6.0% ▌William Moody (Unknown) 2.4% |
| Maine 2 | Ezekiel Whitman Redistricted from MA-15 | Federalist | 1808 1810 (lost) 1816 | Incumbent re-elected. | ▌Y Ezekiel Whitman (Federalist) 74.1% ▌James Irish (Unknown) 24.6% ▌Mark Harris (Democratic-Republican) 1.3% |
| Maine 3 | Mark Langdon Hill Redistricted from MA-16 | Democratic- Republican | 1819 | Incumbent re-elected on the second ballot. | First ballot (November 7, 1820) ▌Mark Langdon Hill (Democratic-Republican) 49.9% ▌Joseph F. Wingate (Democratic-Republican) 39.8% ▌Joshua Head (Unknown) 4.4% ▌Daniel Rose (Democratic-Republican) 3.5% ▌Pearl Stafford (Unknown) 2.4% Second ballot (January 22, 1821) ▌Y Mark Langdon Hill (Democratic-Republican) 54.2% ▌Joseph F. Wingate (Democratic-Republican) 44.7% Others 1.1% |
| Maine 4 | Martin Kinsley Redistricted from MA-17 | Democratic- Republican | 1819 | Incumbent lost re-election. New member elected on the third ballot after the beginning of the term but before Congress convened. Democratic-Republican hold. | First ballot (November 7, 1820) ▌William D. Williamson (Democratic-Republican) 44.7% ▌Jacob MacGaw (Federalist) 21.2% ▌John Cooper (Unknown) 11.8% ▌Martin Kinsley (Democratic-Republican) 11.2% ▌John Wilkins (Democratic-Republican) 9.3% ▌Josiah Kedder (Unknown) 1.3% Second ballot (January 22, 1821) ▌William D. Williamson (Democratic-Republican) 45.8% ▌Jacob MacGaw (Federalist) 22.8% ▌John Wilkins (Democratic-Republican) 13.1% ▌Martin Kinsley (Democratic-Republican) 9.6% ▌John Cooper (Unknown) 7.1% Third ballot (September 10, 1821) ▌Y William D. Williamson (Democratic-Republican) 50.2% ▌Thomas Cobb (Unknown) 17.8% ▌Jabez Mowry (Unknown) 17.4% ▌Martin Kinsley (Democratic-Republican) 8.1% |
| Maine 5 | James Parker Redistricted from MA-18 | Democratic- Republican | 1813 1814 (lost) 1819 | Incumbent lost re-election. New member elected on the third ballot after the beginning of the term but before Congress convened. Democratic-Republican hold. | First ballot (November 7, 1820) ▌Ebenezer Herrick (Democratic-Republican) 38.2% ▌Ebenezer T. Warren (Democratic-Republican) 31.3% ▌James Parker (Democratic-Republican) 21.6% ▌Joshua Gage (Democratic-Republican) 4.7% ▌Peter Grant (Federalist) 1.5% Others 2.8% Second ballot (January 22, 1821) ▌Ebenezer Herrick (Democratic-Republican) 38.1% ▌Joshua Gage (Democratic-Republican) 27.6% ▌Ebenezer T. Warren (Democratic-Republican) 24.7% ▌Peter Grant (Federalist) 8.6% ▌James Parker (Democratic-Republican) 1.0% Third ballot (September 10, 1821) ▌Y Ebenezer Herrick (Democratic-Republican) 52.7% ▌Ebenezer T. Warren (Democratic-Republican) 24.6% ▌Peter Grant (Federalist) 10.5% ▌Joshua Gage (Democratic-Republican) 7.1% ▌James Parker (Democratic-Republican) 5.2% |
| Maine 6 | Joshua Cushman Redistricted from MA-19 | Democratic- Republican | 1818 | Incumbent re-elected. | ▌Y Joshua Cushman (Democratic-Republican) 100% |
| Maine 7 | Enoch Lincoln Redistricted from MA-20 | Democratic- Republican | 1818 (special) | Incumbent re-elected. | ▌Y Enoch Lincoln (Democratic-Republican) 95.9% ▌Samuel A. Bradley (Unknown) 1.5% Others 2.6% |

## Maryland

Maryland elected its members October 2, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Maryland 1 | Raphael Neale | Federalist | 1818 | Incumbent re-elected. | ▌Y Raphael Neale (Federalist) 54.0% ▌Nicholas Stonestreet (Federalist) 46.0% |
| Maryland 2 | Joseph Kent | Democratic- Republican | 1818 | Incumbent re-elected. | ▌Y Joseph Kent (Democratic-Republican) 96.9% ▌John C. Herbert (Federalist) 2.2% |
| Maryland 3 | Henry R. Warfield | Federalist | 1818 | Incumbent re-elected. | ▌Y Henry R. Warfield (Federalist) 99.3% |
| Maryland 4 | Samuel Ringgold | Democratic- Republican | 1810 1814 (lost) 1816 | Incumbent retired. Democratic-Republican hold. | ▌Y John Nelson (Democratic-Republican) 57.9% ▌Thomas C. Worthington (Federalist) 41.9% |
| Maryland 5 Plural district with 2 seats | Samuel Smith | Democratic- Republican | 1792 1803 (retired) 1816 | Incumbent re-elected. | ▌Y Peter Little (Democratic-Republican) 50.0% ▌Y Samuel Smith (Democratic-Republican) 50.0% |
| Maryland 5 Plural district with 2 seats | Peter Little | Democratic- Republican | 1810 1812 (lost) 1816 | Incumbent re-elected. | ▌Y Peter Little (Democratic-Republican) 50.0% ▌Y Samuel Smith (Democratic-Republican) 50.0% |
| Maryland 6 | Stevenson Archer | Democratic- Republican | 1811 (special) 1816 (lost) 1818 | Incumbent retired. New member elected by lot after tied vote. Democratic-Republican hold. | ▌Y Jeremiah Cosden (Democratic-Republican) 49.9% ▌Philip Reed (Democratic-Republican) 49.9% |
| Maryland 7 | Thomas Culbreth | Democratic- Republican | 1816 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Robert Wright (Democratic-Republican) 50.5% ▌Thomas Culbreth (Democratic-Republican) 49.5% |
| Maryland 8 | Thomas Bayly | Federalist | 1816 | Incumbent re-elected. | ▌Y Thomas Bayly (Federalist) 99.5% |

## Massachusetts

This was the first election in Massachusetts after the separation of the former District of Maine as the new State of Maine, taking the old 14th – 20th districts with it.
Massachusetts elected its members November 6, 1820. Massachusetts had a majority requirement for election, which was not met in the 2nd district necessitating two additional elections on January 8, 1821, and April 16, 1821, after the term began but before the new Congress convened.
District numbers differed between source used and elsewhere on Wikipedia; district numbers used elsewhere on Wikipedia used here.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Massachusetts 1 | Jonathan Mason | Federalist | 1817 (special) | Incumbent resigned May 15, 1820, to pursue his law practice. Democratic-Republican gain. Successor also elected the same day to finish the term. | ▌Y Benjamin Gorham (Democratic-Republican) 57.9% ▌Samuel Wells (Unknown) 40.2% ▌Jesse Putname (Unknown) 1.4% Others 0.5% |
| Massachusetts 2 | Nathaniel Silsbee | Democratic- Republican | 1816 | Incumbent retired. New member elected late after the term began but before the Congress convened. Democratic-Republican hold. | First ballot (November 6, 1820) ▌Willard Peele (Independent) 38.5% ▌Gideon Barstow (Democratic-Republican) 34.0% ▌Leverett Saltonstall I (Federalist) 27.4% Second ballot (January 8, 1821) ▌Gideon Barstow (Democratic-Republican) 48.4% ▌John Hooper (Federalist) 28.1% ▌Willard Peele (Independent) 10.1% ▌Charles Saunders (Unknown) 9.1% Others 4.4% Third ballot (April 16, 1821) ▌Y Gideon Barstow (Democratic-Republican) 53.9% ▌Timothy Pickering (Federalist) 44.7% Others 1.4% |
| Massachusetts 3 | Jeremiah Nelson | Federalist | 1804 1806 (retired) 1814 | Incumbent re-elected. | ▌Y Jeremiah Nelson (Federalist) 85.7% ▌Amos Spaulding (Unknown) 12.6% Others 1.7% |
| Massachusetts 4 | Timothy Fuller | Democratic- Republican | 1816 | Incumbent re-elected. | ▌Y Timothy Fuller (Democratic-Republican) 58.2% ▌John Hart (Democratic-Republican) 20.9% ▌Samuel P. Fay (Federalist) 17.8% Others 3.1% |
| Massachusetts 5 | Samuel Lathrop | Federalist | 1819 | Incumbent re-elected. | ▌Y Samuel Lathrop (Federalist) 73.7% ▌Thomas Shepherd (Democratic-Republican) 26.3% |
| Massachusetts 6 | Samuel C. Allen | Federalist | 1816 | Incumbent re-elected. | ▌Y Samuel C. Allen (Federalist) 92.4% Others 7.6% |
| Massachusetts 7 | Henry Shaw | Democratic- Republican | 1816 | Incumbent retired. Federalist gain. | ▌Y Henry W. Dwight (Federalist) 51.4% ▌William P. Walker (Democratic-Republican) 43.9% Others 4.7% |
| Massachusetts 8 | Zabdiel Sampson | Democratic- Republican | 1816 | Incumbent resigned July 26, 1820. Democratic-Republican hold. | ▌Y Aaron Hobart (Democratic-Republican) 54.4% ▌William Baylies (Federalist) 45.6% |
| Massachusetts 9 | Walter Folger Jr. | Democratic- Republican | 1816 | Incumbent lost re-election. Federalist gain. | ▌Y John Reed Jr. (Federalist) 65.9% ▌Walter Folger Jr. (Democratic-Republican) 22.9% Others 11.2% |
| Massachusetts 10 | Marcus Morton | Democratic- Republican | 1816 | Incumbent lost re-election. Federalist gain | ▌Y Francis Baylies (Federalist) 52.5% ▌Marcus Morton (Democratic-Republican) 47.5% |
| Massachusetts 11 | Benjamin Adams | Federalist | 1816 | Incumbent lost re-election. Democratic-Republican gain. | ▌Y Jonathan Russell (Democratic-Republican) 52.9% ▌Benjamin Adams (Federalist) 42.9% Others 4.2% |
| Massachusetts 12 | Jonas Kendall | Federalist | 1818 | Incumbent lost re-election. Federalist hold. | ▌Y Lewis Bigelow (Federalist) 51.7% ▌Edmund Cushing (Democratic-Republican) 26.1% ▌Jonas Kendall (Federalist) 22.1% |
| Massachusetts 13 | William Eustis | Democratic- Republican | 1800 1804 (lost) 1820 (special) | Incumbent re-elected. | ▌Y William Eustis (Democratic-Republican) 65.0% ▌James Richardson (Federalist) 30.7% ▌Richard Sullivan (Federalist) 4.3% |

## Michigan Territory

See Non-voting delegates, below.

## Mississippi

Mississippi elected its member August 7–8, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Mississippi at-large | Christopher Rankin | Democratic-Republican | 1819 | Incumbent re-elected. | ▌Y Christopher Rankin (Democratic-Republican) 100% |

## Missouri

Missouri was admitted to the union on August 10, 1821, but elections had been held August 28, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Missouri at-large | None (new state) | None (new state) | None (new state) | New seat. Territorial delegate re-elected as new member. Democratic-Republican gain. | ▌Y John Scott (Democratic-Republican) 93.6% ▌James Caldwell (Democratic-Republican) 6.4% |

## New Hampshire

New Hampshire elected its members August 18, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| New Hampshire at-large 6 seats on a general ticket | Josiah Butler | Democratic-Republican | 1816 | Incumbent re-elected. | ▌Y William Plumer Jr. (Democratic-Republican) 16.6% ▌Y Nathaniel Upham (Democratic-Republican) 16.5% ▌Y Josiah Butler (Democratic-Republican) 16.2% ▌Y Matthew Harvey (Democratic-Republican) 14.9% ▌Y Aaron Matson (Democratic-Republican) 14.2% ▌Y Thomas Whipple Jr. (Democratic-Republican) 10.6% ▌Arthur Livermore (Democratic-Republican) 5.9% ▌Levi Jackson (Federalist) 2.7% ▌Clifton Clagett (Democratic-Republican) 2.2% |
| New Hampshire at-large 6 seats on a general ticket | Nathaniel Upham | Democratic-Republican | 1816 | Incumbent re-elected. | ▌Y William Plumer Jr. (Democratic-Republican) 16.6% ▌Y Nathaniel Upham (Democratic-Republican) 16.5% ▌Y Josiah Butler (Democratic-Republican) 16.2% ▌Y Matthew Harvey (Democratic-Republican) 14.9% ▌Y Aaron Matson (Democratic-Republican) 14.2% ▌Y Thomas Whipple Jr. (Democratic-Republican) 10.6% ▌Arthur Livermore (Democratic-Republican) 5.9% ▌Levi Jackson (Federalist) 2.7% ▌Clifton Clagett (Democratic-Republican) 2.2% |
| New Hampshire at-large 6 seats on a general ticket | Clifton Clagett | Democratic-Republican | 1802 1804 (retired) 1816 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y William Plumer Jr. (Democratic-Republican) 16.6% ▌Y Nathaniel Upham (Democratic-Republican) 16.5% ▌Y Josiah Butler (Democratic-Republican) 16.2% ▌Y Matthew Harvey (Democratic-Republican) 14.9% ▌Y Aaron Matson (Democratic-Republican) 14.2% ▌Y Thomas Whipple Jr. (Democratic-Republican) 10.6% ▌Arthur Livermore (Democratic-Republican) 5.9% ▌Levi Jackson (Federalist) 2.7% ▌Clifton Clagett (Democratic-Republican) 2.2% |
| New Hampshire at-large 6 seats on a general ticket | Joseph Buffum Jr. | Democratic-Republican | 1819 | Incumbent retired. Democratic-Republican hold. | ▌Y William Plumer Jr. (Democratic-Republican) 16.6% ▌Y Nathaniel Upham (Democratic-Republican) 16.5% ▌Y Josiah Butler (Democratic-Republican) 16.2% ▌Y Matthew Harvey (Democratic-Republican) 14.9% ▌Y Aaron Matson (Democratic-Republican) 14.2% ▌Y Thomas Whipple Jr. (Democratic-Republican) 10.6% ▌Arthur Livermore (Democratic-Republican) 5.9% ▌Levi Jackson (Federalist) 2.7% ▌Clifton Clagett (Democratic-Republican) 2.2% |
| New Hampshire at-large 6 seats on a general ticket | William Plumer Jr. | Democratic-Republican | 1819 | Incumbent re-elected. | ▌Y William Plumer Jr. (Democratic-Republican) 16.6% ▌Y Nathaniel Upham (Democratic-Republican) 16.5% ▌Y Josiah Butler (Democratic-Republican) 16.2% ▌Y Matthew Harvey (Democratic-Republican) 14.9% ▌Y Aaron Matson (Democratic-Republican) 14.2% ▌Y Thomas Whipple Jr. (Democratic-Republican) 10.6% ▌Arthur Livermore (Democratic-Republican) 5.9% ▌Levi Jackson (Federalist) 2.7% ▌Clifton Clagett (Democratic-Republican) 2.2% |
| New Hampshire at-large 6 seats on a general ticket | Arthur Livermore | Democratic-Republican | 1816 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y William Plumer Jr. (Democratic-Republican) 16.6% ▌Y Nathaniel Upham (Democratic-Republican) 16.5% ▌Y Josiah Butler (Democratic-Republican) 16.2% ▌Y Matthew Harvey (Democratic-Republican) 14.9% ▌Y Aaron Matson (Democratic-Republican) 14.2% ▌Y Thomas Whipple Jr. (Democratic-Republican) 10.6% ▌Arthur Livermore (Democratic-Republican) 5.9% ▌Levi Jackson (Federalist) 2.7% ▌Clifton Clagett (Democratic-Republican) 2.2% |

## New Jersey

New Jersey elected its members November 7, 1820. There were an unusually large number of candidates, 119 candidates according to one contemporary newspaper. Some candidates ran under an "Anti-Caucus" ticket. Only 1 of the 6 six incumbents would serve in the next term, as 4 retired and 1 died after re-election.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| New Jersey at-large 6 seats on a general ticket | Ephraim Bateman | Democratic-Republican | 1814 | Incumbent re-elected. | ▌Y Ephraim Bateman (Democratic-Republican) 16.4% ▌Y George Holcombe (Democratic-Republican) 15.1% ▌Y George Cassedy (Democratic-Republican) 14.0% ▌Y Samuel Swan (Democratic-Republican) 13.9% ▌Y John Linn (Democratic-Republican) 12.2% ▌Y James Matlack (Democratic-Republican) 11.7% ▌Lewis Condict (D-R Anti-Caucus) 5.6% ▌John Rutherford (D-R Anti-Caucus) 1.7% ▌James Parker (Federalist) 1.5% ▌Joseph McIlvaine (D-R Anti-Caucus) 1.4% ▌Samuel L. Southard (D-R Anti-Caucus) 1.4% ▌Joseph Hopkinson (D-R Anti-Caucus) 1.1% ▌John Frelinghuysen (Federalist Anti-Caucus) 1.1% Others 2.9% |
| New Jersey at-large 6 seats on a general ticket | John Linn | Democratic-Republican | 1816 | Incumbent re-elected but died January 5, 1821, leading to an October 8, 1821 special election. | ▌Y Ephraim Bateman (Democratic-Republican) 16.4% ▌Y George Holcombe (Democratic-Republican) 15.1% ▌Y George Cassedy (Democratic-Republican) 14.0% ▌Y Samuel Swan (Democratic-Republican) 13.9% ▌Y John Linn (Democratic-Republican) 12.2% ▌Y James Matlack (Democratic-Republican) 11.7% ▌Lewis Condict (D-R Anti-Caucus) 5.6% ▌John Rutherford (D-R Anti-Caucus) 1.7% ▌James Parker (Federalist) 1.5% ▌Joseph McIlvaine (D-R Anti-Caucus) 1.4% ▌Samuel L. Southard (D-R Anti-Caucus) 1.4% ▌Joseph Hopkinson (D-R Anti-Caucus) 1.1% ▌John Frelinghuysen (Federalist Anti-Caucus) 1.1% Others 2.9% |
| New Jersey at-large 6 seats on a general ticket | Bernard Smith | Democratic-Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y Ephraim Bateman (Democratic-Republican) 16.4% ▌Y George Holcombe (Democratic-Republican) 15.1% ▌Y George Cassedy (Democratic-Republican) 14.0% ▌Y Samuel Swan (Democratic-Republican) 13.9% ▌Y John Linn (Democratic-Republican) 12.2% ▌Y James Matlack (Democratic-Republican) 11.7% ▌Lewis Condict (D-R Anti-Caucus) 5.6% ▌John Rutherford (D-R Anti-Caucus) 1.7% ▌James Parker (Federalist) 1.5% ▌Joseph McIlvaine (D-R Anti-Caucus) 1.4% ▌Samuel L. Southard (D-R Anti-Caucus) 1.4% ▌Joseph Hopkinson (D-R Anti-Caucus) 1.1% ▌John Frelinghuysen (Federalist Anti-Caucus) 1.1% Others 2.9% |
| New Jersey at-large 6 seats on a general ticket | Henry Southard | Democratic-Republican | 1814 | Incumbent retired. Democratic-Republican hold. | ▌Y Ephraim Bateman (Democratic-Republican) 16.4% ▌Y George Holcombe (Democratic-Republican) 15.1% ▌Y George Cassedy (Democratic-Republican) 14.0% ▌Y Samuel Swan (Democratic-Republican) 13.9% ▌Y John Linn (Democratic-Republican) 12.2% ▌Y James Matlack (Democratic-Republican) 11.7% ▌Lewis Condict (D-R Anti-Caucus) 5.6% ▌John Rutherford (D-R Anti-Caucus) 1.7% ▌James Parker (Federalist) 1.5% ▌Joseph McIlvaine (D-R Anti-Caucus) 1.4% ▌Samuel L. Southard (D-R Anti-Caucus) 1.4% ▌Joseph Hopkinson (D-R Anti-Caucus) 1.1% ▌John Frelinghuysen (Federalist Anti-Caucus) 1.1% Others 2.9% |
| New Jersey at-large 6 seats on a general ticket | Joseph Bloomfield | Democratic-Republican | 1816 | Incumbent retired. Democratic-Republican hold. | ▌Y Ephraim Bateman (Democratic-Republican) 16.4% ▌Y George Holcombe (Democratic-Republican) 15.1% ▌Y George Cassedy (Democratic-Republican) 14.0% ▌Y Samuel Swan (Democratic-Republican) 13.9% ▌Y John Linn (Democratic-Republican) 12.2% ▌Y James Matlack (Democratic-Republican) 11.7% ▌Lewis Condict (D-R Anti-Caucus) 5.6% ▌John Rutherford (D-R Anti-Caucus) 1.7% ▌James Parker (Federalist) 1.5% ▌Joseph McIlvaine (D-R Anti-Caucus) 1.4% ▌Samuel L. Southard (D-R Anti-Caucus) 1.4% ▌Joseph Hopkinson (D-R Anti-Caucus) 1.1% ▌John Frelinghuysen (Federalist Anti-Caucus) 1.1% Others 2.9% |
| New Jersey at-large 6 seats on a general ticket | Charles Kinsey | Democratic-Republican | 1816 1818 (lost) 1820 (special) | Incumbent retired. Democratic-Republican hold. | ▌Y Ephraim Bateman (Democratic-Republican) 16.4% ▌Y George Holcombe (Democratic-Republican) 15.1% ▌Y George Cassedy (Democratic-Republican) 14.0% ▌Y Samuel Swan (Democratic-Republican) 13.9% ▌Y John Linn (Democratic-Republican) 12.2% ▌Y James Matlack (Democratic-Republican) 11.7% ▌Lewis Condict (D-R Anti-Caucus) 5.6% ▌John Rutherford (D-R Anti-Caucus) 1.7% ▌James Parker (Federalist) 1.5% ▌Joseph McIlvaine (D-R Anti-Caucus) 1.4% ▌Samuel L. Southard (D-R Anti-Caucus) 1.4% ▌Joseph Hopkinson (D-R Anti-Caucus) 1.1% ▌John Frelinghuysen (Federalist Anti-Caucus) 1.1% Others 2.9% |

## New York

New York elected its members April 24–26, 1821, after the term began but before the new Congress convened. The 21st district, previously a plural district with two seats, was divided into two single-member districts for the 17th Congress, the 21st and 22nd.
The Democratic-Republican party in New York was divided between "Bucktails" and "Clintonians". The Clintonians ran on a joint ticket with the remaining Federalists. In a few cases, marked as "Clintonian/Federalist" below, it is unclear whether a candidate on the joint ticket was Democratic-Republican or Federalist.
Only five of the twenty-seven incumbents were re-elected to the next term. Sixteen incumbents retired and five lost re-election. Despite this high turnover of membership, there was only a one-seat net gain for the Federalists.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| New York 1 Plural district with 2 seats | Silas Wood | Federalist | 1818 | Incumbent re-elected. | ▌Y Silas Wood (Federalist) 27.1% ▌Y Peter Sharpe (Democratic-Republican) 23.1% ▌Cadwallader D. Colden (Federalist) 22.9% ▌Joshua Smith (Democratic-Republican) 22.8% "Cadwallader Colden" 2.7% "Cadwallader D. Colder" 1.5% |
| New York 1 Plural district with 2 seats | James Guyon Jr. | Democratic- Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y Silas Wood (Federalist) 27.1% ▌Y Peter Sharpe (Democratic-Republican) 23.1% ▌Cadwallader D. Colden (Federalist) 22.9% ▌Joshua Smith (Democratic-Republican) 22.8% "Cadwallader Colden" 2.7% "Cadwallader D. Colder" 1.5% |
| New York 1 Plural district with 2 seats | James Guyon Jr. | Democratic- Republican | 1818 | Election successfully contested. Federalist gain. | ▌Y Cadwallader D. Colden (Federalist) ▌Peter Sharpe (Democratic-Republican) |
| New York 2 Plural district with 2 seats | Henry Meigs | Democratic- Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y John J. Morgan (Democratic-Republican) 49.5% ▌Y Churchill C. Cambreleng (Democratic-Republican) 29.6% ▌Henry Eckford (Clintonian/Federalist) 20.9% |
| New York 2 Plural district with 2 seats | Peter H. Wendover | Democratic- Republican | 1814 | Incumbent retired. Democratic-Republican hold. | ▌Y John J. Morgan (Democratic-Republican) 49.5% ▌Y Churchill C. Cambreleng (Democratic-Republican) 29.6% ▌Henry Eckford (Clintonian/Federalist) 20.9% |
| New York 3 | Caleb Tompkins | Democratic- Republican | 1816 | Incumbent retired. Democratic-Republican hold. | ▌Y Jeremiah H. Pierson (Democratic-Republican) 59.2% ▌John T. Smith (Clintonian/Federalist) 37.7% ▌Peter S. Van Orden (Democratic-Republican) 9.4% |
| New York 4 | Randall S. Street | Federalist | 1818 | Incumbent retired. Democratic-Republican gain. | ▌Y William W. Van Wyck (Democratic-Republican) 56.8% ▌William Taber (Clintonian/Federalist) 43.2% |
| New York 5 | James Strong | Federalist | 1818 | Incumbent retired. Federalist hold. | ▌Y Walter Patterson (Federalist) 57.8% ▌Philip J. Schuyler (Democratic-Republican) 42.0% |
| New York 6 | Walter Case | Democratic- Republican | 1818 | Incumbent retired. Democratic-Republican hold. Successor died September 7, 1821, before the Congress convened, leading to a special election. | ▌Y Selah Tuthill (Democratic-Republican) 61.6% ▌James W. Wilkin (Democratic-Republican) 38.3% |
| New York 7 | Jacob H. De Witt | Democratic- Republican | 1818 | Incumbent retired. Federalist gain. | ▌Y Charles H. Ruggles (Federalist) 54.6% ▌William Gillespie (Democratic-Republican) 45.3% |
| New York 8 | Robert Clark | Democratic- Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y Richard McCarty (Democratic-Republican) 58.8% ▌Jacob Haight (Democratic-Republican) 41.1% |
| New York 9 | Solomon Van Rensselaer | Federalist | 1818 | Incumbent re-elected. | ▌Y Solomon Van Rensselaer (Federalist) 57.1% ▌Harmanus Bleecker (Democratic-Republican) 42.8% |
| New York 10 | John D. Dickinson | Federalist | 1818 | Incumbent re-elected. | ▌Y John D. Dickinson (Federalist) 55.5% ▌James L. Hogeboom (Democratic-Republican) 42.4% ▌Simon Newcomb (Clintonian/Federalist) 2.0% |
| New York 11 | John W. Taylor | Democratic- Republican | 1812 | Incumbent re-elected. | ▌Y John W. Taylor (Democratic-Republican) 53.3% ▌Guert Van Schoonhoven (Democratic-Republican) 46.5% |
| New York 12 Plural district with 2 seats | Nathaniel Pitcher | Democratic- Republican | 1818 | Incumbent re-elected. | ▌Y Reuben H. Walworth (Democratic-Republican) 27.9% ▌Y Nathaniel Pitcher (Democratic-Republican) 26.1% ▌John Crary (Clintonian/Federalist) 23.5% ▌Ezra C. Gross (Democratic-Republican) 22.5% |
| New York 12 Plural district with 2 seats | Ezra C. Gross | Democratic- Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Reuben H. Walworth (Democratic-Republican) 27.9% ▌Y Nathaniel Pitcher (Democratic-Republican) 26.1% ▌John Crary (Clintonian/Federalist) 23.5% ▌Ezra C. Gross (Democratic-Republican) 22.5% |
| New York 13 | Harmanus Peek | Democratic- Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y John Gebhard (Democratic-Republican) 51.0% ▌William Mann (Democratic-Republican) 49.0% |
| New York 14 | John Fay | Democratic- Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y Alfred Conkling (Democratic-Republican) 52.4% ▌John Herkimer (Democratic-Republican) 47.6% |
| New York 15 Plural district with 2 seats | Robert Monell | Democratic- Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y James Hawkes (Democratic-Republican) 28.5% ▌Y Samuel Campbell (Democratic-Republican) 27.8% ▌Robert Monell (Democratic-Republican) 22.3% ▌Alvan Stewart (Clintonian/Federalist) 21.5% |
| New York 15 Plural district with 2 seats | Joseph S. Lyman | Democratic- Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y James Hawkes (Democratic-Republican) 28.5% ▌Y Samuel Campbell (Democratic-Republican) 27.8% ▌Robert Monell (Democratic-Republican) 22.3% ▌Alvan Stewart (Clintonian/Federalist) 21.5% |
| New York 16 | Henry R. Storrs | Federalist | 1816 | Incumbent retired. Federalist hold. | ▌Y Joseph Kirkland (Federalist) 56.5% ▌Nathan Williams (Democratic-Republican) 43.4% |
| New York 17 | Aaron Hackley Jr. | Democratic- Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y Thomas H. Hubbard (Democratic-Republican) 51.0% ▌David Woods (Democratic-Republican) 48.9% |
| New York 18 | William D. Ford | Democratic- Republican | 1818 | Incumbent retired. Federalist gain. | ▌Y Micah Sterling (Federalist) 52.3% ▌Perley Keyes (Democratic-Republican) 47.3% |
| New York 19 | George Hall | Democratic- Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Elisha Litchfield (Democratic-Republican) 51.4% ▌George Hall (Democratic-Republican) 48.5% |
| New York 20 Plural district with 2 seats | Jonathan Richmond | Democratic- Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y William B. Rochester (Democratic-Republican) 29.6% ▌Y David Woodcock (Democratic-Republican) 24.7% ▌Jonathan Richmond (Democratic-Republican) 23.9% ▌Herman Camp (Democratic-Republican) 21.8% |
| New York 20 Plural district with 2 seats | Caleb Baker | Democratic- Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y William B. Rochester (Democratic-Republican) 29.6% ▌Y David Woodcock (Democratic-Republican) 24.7% ▌Jonathan Richmond (Democratic-Republican) 23.9% ▌Herman Camp (Democratic-Republican) 21.8% |
| New York 21 | Nathaniel Allen | Democratic- Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Elijah Spencer (Democratic-Republican) 49.6% ▌Nathaniel Allen (Democratic-Republican) 48.6% ▌Daniel W. Lewis (Clintonian/Federalist) 1.7% |
| New York 22 | Albert H. Tracy Redistricted from the 21st district | Democratic- Republican | 1818 | Incumbent re-elected. | ▌Y Albert H. Tracy (Democratic-Republican) 50.8% ▌Benjamin Ellicott (Democratic-Republican) 49.2% |

## North Carolina

North Carolina elected its members August 9, 1821, after the term began but before the new Congress convened.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| North Carolina 1 | Lemuel Sawyer | Democratic-Republican | 1806 1813 (lost) 1817 | Incumbent re-elected. | ▌Y Lemuel Sawyer (Democratic-Republican) 63.5% ▌James Iredell Jr. (Federalist) 24.6% ▌Thomas Williams (Democratic-Republican) 11.9% |
| North Carolina 2 | Hutchins G. Burton | Democratic-Republican | 1819 | Incumbent re-elected. | ▌Y Hutchins G. Burton (Democratic-Republican) 100% |
| North Carolina 3 | Thomas H. Hall | Democratic-Republican | 1817 | Incumbent re-elected. | ▌Y Thomas H. Hall (Democratic-Republican) 53.0% ▌William Clarke (Federalist) 47.0% |
| North Carolina 4 | William S. Blackledge | Federalist | 1821 (special) | Incumbent re-elected as a Democratic-Republican. Democratic-Republican gain. | ▌Y William S. Blackledge (Democratic-Republican) 61.5% ▌John P. Daves (Federalist) 38.5% |
| North Carolina 5 | Charles Hooks | Democratic-Republican | 1816 (special) 1817 (lost) 1819 | Incumbent re-elected. | ▌Y Charles Hooks (Democratic-Republican) 65.3% ▌Daniel Glisson (Federalist) 34.7% |
| North Carolina 6 | Weldon N. Edwards | Democratic-Republican | 1816 (special) | Incumbent re-elected. | ▌Y Weldon N. Edwards (Democratic-Republican) 99.3% Others 0.7% |
| North Carolina 7 | John Culpepper | Federalist | 1806 1808 (contested) 1808 (special) 1813 1816 (lost) 1819 | Incumbent lost re-election. Federalist hold. | ▌Y Archibald McNeill (Federalist) 52.4% ▌John Culpepper (Federalist) 47.6% |
| North Carolina 8 | James S. Smith | Democratic-Republican | 1817 | Incumbent retired. Democratic-Republican hold. | ▌Y Josiah Crudup (Democratic-Republican) ▌John Scott (Federalist) |
| North Carolina 9 | Thomas Settle | Democratic-Republican | 1817 | Incumbent retired. Democratic-Republican hold. | ▌Y Romulus M. Saunders (Democratic-Republican) |
| North Carolina 10 | Charles Fisher | Democratic-Republican | 1819 (special) | Incumbent retired. Democratic-Republican hold. | ▌Y John Long (Democratic-Republican) ▌John L. Henderson (Federalist) |
| North Carolina 11 | William Davidson | Federalist | 1818 (special) | Incumbent lost re-election. Democratic-Republican gain. | ▌Y Henry W. Connor (Democratic-Republican) 52.9% ▌William Davidson (Federalist) 47.1% |
| North Carolina 12 | Felix Walker | Democratic-Republican | 1817 | Incumbent re-elected. | ▌Y Felix Walker (Democratic-Republican) 62.1% ▌Robert B. Vance (Democratic-Republican) 37.9% |
| North Carolina 13 | Lewis Williams | Democratic-Republican | 1815 | Incumbent re-elected. | ▌Y Lewis Williams (Democratic-Republican) |

## Ohio

Ohio elected its members October 10, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Ohio 1 | Thomas R. Ross | Democratic-Republican | 1818 | Incumbent re-elected. | ▌Y Thomas R. Ross (Democratic-Republican) 100% |
| Ohio 2 | John W. Campbell | Democratic-Republican | 1816 | Incumbent re-elected. | ▌Y John W. Campbell (Democratic-Republican) 100% |
| Ohio 3 | Henry Brush | Democratic-Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Levi Barber (Democratic-Republican) 37.8% ▌Henry Brush (Democratic-Republican) 32.9% ▌Thomas Scott (Democratic-Republican) 29.3% |
| Ohio 4 | Samuel Herrick | Democratic-Republican | 1816 | Incumbent retired. Democratic-Republican hold. Winner declined to serve, leading to a special election. | ▌Y John C. Wright (Democratic-Republican) 50.1% ▌David Chambers (Democratic-Republican) 49.9% |
| Ohio 5 | Philemon Beecher | Federalist | 1816 | Incumbent lost re-election. Democratic-Republican gain. | ▌Y Joseph Vance (Democratic-Republican) 40.9% ▌Philemon Beecher (Federalist) 44.6% ▌Daniel Smith (Federalist) 7.9% ▌Orris Parrish (Democratic-Republican) 6.3% ▌John Kilbourn (Unknown) 0.3% |
| Ohio 6 | John Sloane | Democratic-Republican | 1818 | Incumbent re-elected. | ▌Y John Sloane (Democratic-Republican) 91.7% ▌Alred Kelley (Democratic-Republican) 8.2% Others 0.1% |

## Pennsylvania

Pennsylvania elected its members October 10, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Pennsylvania 1 Plural district with 4 seats | Joseph Hemphill | Federalist | 1800 1802 (lost) 1818 | Incumbent re-elected. | ▌Y John Sergeant (Federalist) 24.8% ▌Y Joseph Hemphill (Federalist) 15.1% ▌Y William Milnor (Federalist) 14.8% ▌Y Samuel Edwards (Federalist) 13.6% ▌Thomas Forrest (Federalist) 10.5% ▌Nicholas Biddle (Democratic-Republican) 10.5% ▌Joseph Engle (Democratic-Republican) 9.9% ▌Gideon Humphrey (Unknown) 0.8% |
| Pennsylvania 1 Plural district with 4 seats | Samuel Edwards | Federalist | 1818 | Incumbent re-elected. | ▌Y John Sergeant (Federalist) 24.8% ▌Y Joseph Hemphill (Federalist) 15.1% ▌Y William Milnor (Federalist) 14.8% ▌Y Samuel Edwards (Federalist) 13.6% ▌Thomas Forrest (Federalist) 10.5% ▌Nicholas Biddle (Democratic-Republican) 10.5% ▌Joseph Engle (Democratic-Republican) 9.9% ▌Gideon Humphrey (Unknown) 0.8% |
| Pennsylvania 1 Plural district with 4 seats | Thomas Forrest | Federalist | 1818 | Incumbent lost re-election. Federalist hold. | ▌Y John Sergeant (Federalist) 24.8% ▌Y Joseph Hemphill (Federalist) 15.1% ▌Y William Milnor (Federalist) 14.8% ▌Y Samuel Edwards (Federalist) 13.6% ▌Thomas Forrest (Federalist) 10.5% ▌Nicholas Biddle (Democratic-Republican) 10.5% ▌Joseph Engle (Democratic-Republican) 9.9% ▌Gideon Humphrey (Unknown) 0.8% |
| Pennsylvania 1 Plural district with 4 seats | John Sergeant | Federalist | 1815 (special) | Incumbent re-elected. | ▌Y John Sergeant (Federalist) 24.8% ▌Y Joseph Hemphill (Federalist) 15.1% ▌Y William Milnor (Federalist) 14.8% ▌Y Samuel Edwards (Federalist) 13.6% ▌Thomas Forrest (Federalist) 10.5% ▌Nicholas Biddle (Democratic-Republican) 10.5% ▌Joseph Engle (Democratic-Republican) 9.9% ▌Gideon Humphrey (Unknown) 0.8% |
| Pennsylvania 2 Plural district with 2 seats | William Darlington | Democratic- Republican | 1814 1816 (lost) 1818 | Incumbent re-elected. | ▌Y William Darlington (Democratic-Republican) 26.1% ▌Y Samuel Gross (Democratic-Republican) 26.0% ▌Charles Miner (Federalist) 24.1% ▌John Henderson (Federalist) 23.8% |
| Pennsylvania 2 Plural district with 2 seats | Samuel Gross | Democratic- Republican | 1818 | Incumbent re-elected. | ▌Y William Darlington (Democratic-Republican) 26.1% ▌Y Samuel Gross (Democratic-Republican) 26.0% ▌Charles Miner (Federalist) 24.1% ▌John Henderson (Federalist) 23.8% |
| Pennsylvania 3 Plural district with 2 seats | James M. Wallace | Democratic- Republican | 1815 (special) | Incumbent lost re-election. Federalist gain. | ▌Y James Buchanan (Federalist) 27.9% ▌Y John Phillips (Federalist) 27.5% ▌Jacob Hibshman (Democratic-Republican) 22.8% ▌James M. Wallace (Democratic-Republican) 21.8% |
| Pennsylvania 3 Plural district with 2 seats | Jacob Hibshman | Democratic- Republican | 1818 | Incumbent lost re-election. Federalist gain. | ▌Y James Buchanan (Federalist) 27.9% ▌Y John Phillips (Federalist) 27.5% ▌Jacob Hibshman (Democratic-Republican) 22.8% ▌James M. Wallace (Democratic-Republican) 21.8% |
| Pennsylvania 4 | Jacob Hostetter | Democratic- Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y James S. Mitchell (Democratic-Republican) 54.4% ▌Jacob Hostetter (Federalist) 45.6% |
| Pennsylvania 5 Plural district with 2 seats | Andrew Boden | Democratic- Republican | 1816 | Incumbent retired. Democratic-Republican hold. | ▌Y James McSherry (Democratic-Republican) 27.2% ▌Y James Duncan (Democratic-Republican) 26.4% ▌James Wilson (Federalist) 23.1% ▌Isaiah Graham (Federalist) 22.8% ▌Robert K. Lowry (Independent) 0.6% |
| Pennsylvania 5 Plural district with 2 seats | David Fullerton | Democratic- Republican | 1818 | Incumbent resigned May 15, 1820. Democratic-Republican hold. Successor was not a candidate in the same day's election to finish the term. Successor resigned in April 1821, leading to a special election. | ▌Y James McSherry (Democratic-Republican) 27.2% ▌Y James Duncan (Democratic-Republican) 26.4% ▌James Wilson (Federalist) 23.1% ▌Isaiah Graham (Federalist) 22.8% ▌Robert K. Lowry (Independent) 0.6% |
| Pennsylvania 6 Plural district with 2 seats | Samuel Moore | Democratic- Republican | 1818 | Incumbent re-elected. | ▌Y Samuel Moore (Democratic-Republican) 30.7% ▌Y Thomas J. Rogers (Democratic-Republican) 28.6% ▌Daniel W. Dingman (Federalist) 21.1% ▌Matthais Morris (Federalist) 19.6% |
| Pennsylvania 6 Plural district with 2 seats | Thomas J. Rogers | Democratic- Republican | 1818 (special) | Incumbent re-elected. | ▌Y Samuel Moore (Democratic-Republican) 30.7% ▌Y Thomas J. Rogers (Democratic-Republican) 28.6% ▌Daniel W. Dingman (Federalist) 21.1% ▌Matthais Morris (Federalist) 19.6% |
| Pennsylvania 7 | Joseph Hiester | Democratic- Republican | 1798 1804 (retired) 1814 | Incumbent retired to run for Governor of Pennsylvania. Federalist gain. Incumbent then resigned in December 1820 when elected Governor of Pennsylvania and successor lost the special election to finish the term. | ▌Y Ludwig Worman (Federalist) 55.5% ▌Gabriel Hiester (Democratic-Republican) 44.5% |
| Pennsylvania 8 | Robert Philson | Democratic- Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y John Tod (Democratic-Republican) 75.7% ▌Robert Philson (Federalist) 24.3% |
| Pennsylvania 9 | William P. Maclay | Democratic- Republican | 1816 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y John Brown (Democratic-Republican) 54.6% ▌William P. Maclay (Democratic-Republican) 45.4% |
| Pennsylvania 10 Plural district with 2 seats | George Denison | Democratic- Republican | 1818 | Incumbent re-elected. | ▌Y George Denison (Democratic-Republican) 34.0% ▌Y William Cox Ellis (Federalist) 23.3% ▌Abiel Fellows (Federalist) 16.1% ▌Thomas Murray (Democratic-Republican) 15.7% ▌Thomas Murray Jr. (Democratic-Republican) 11.0% |
| Pennsylvania 10 Plural district with 2 seats | John Murray | Democratic- Republican | 1817 (special) | Incumbent retired. Federalist gain. Incumbent resigned July 20, 1821, leading to a special election. | ▌Y George Denison (Democratic-Republican) 34.0% ▌Y William Cox Ellis (Federalist) 23.3% ▌Abiel Fellows (Federalist) 16.1% ▌Thomas Murray (Democratic-Republican) 15.7% ▌Thomas Murray Jr. (Democratic-Republican) 11.0% |
| Pennsylvania 11 | David Marchand | Democratic- Republican | 1816 | Incumbent retired. Democratic-Republican hold. | ▌Y George Plumer (Democratic-Republican) 54.7% ▌Alexander W. Foster (Federalist) 45.3% |
| Pennsylvania 12 | Thomas Patterson | Democratic- Republican | 1816 | Incumbent re-elected. | ▌Y Thomas Patterson (Democratic-Republican) 67.3% ▌Thomas McGiffen (Federalist) 32.7% |
| Pennsylvania 13 | Christian Tarr | Democratic- Republican | 1816 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Andrew Stewart (Democratic-Republican) 48.3% ▌Christian Tarr (Democratic-Republican) 40.1% ▌Charles Porter (Federalist) 11.6% |
| Pennsylvania 14 | Henry Baldwin | Democratic- Republican | 1816 | Incumbent re-elected. | ▌Y Henry Baldwin (Democratic-Republican) 63.8% ▌William Marks (Federalist) 36.2% |
| Pennsylvania 15 | Robert Moore | Democratic- Republican | 1816 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Patrick Farrelly (Democratic-Republican) 53.7% ▌Robert Moore (Federalist) 43.4% ▌Beven Pearson (Unknown) 2.9% |

## Rhode Island

Rhode Island elected its members August 29, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Rhode Island at-large 2 seats on a general ticket | Samuel Eddy | Democratic-Republican | 1818 | Incumbent re-elected. | ▌Y Job Durfee (Democratic-Republican) 31.5% ▌Y Samuel Eddy (Democratic-Republican) 25.5% ▌Samuel Bridgham (Federalist) 24.5% ▌Nathaniel Hazard (Democratic-Republican) 17.9% Others 0.6% |
| Rhode Island at-large 2 seats on a general ticket | Nathaniel Hazard | Democratic-Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. Incumbent died December 17, 1820, and seat remained vacant until the end of term. | ▌Y Job Durfee (Democratic-Republican) 31.5% ▌Y Samuel Eddy (Democratic-Republican) 25.5% ▌Samuel Bridgham (Federalist) 24.5% ▌Nathaniel Hazard (Democratic-Republican) 17.9% Others 0.6% |

## South Carolina

South Carolina elected its members October 9–10, 1820.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| South Carolina 1 | Charles Pinckney | Democratic-Republican | 1818 | Incumbent retired. Democratic-Republican hold. | ▌Y Joel R. Poinsett (Democratic-Republican) 52.1% ▌John Geddes (Democratic-Republican) 47.9% |
| South Carolina 2 | William Lowndes | Democratic-Republican | 1810 | Incumbent re-elected. | ▌Y William Lowndes (Democratic-Republican) 100% |
| South Carolina 3 | James Ervin | Democratic-Republican | 1816 | Incumbent retired. Democratic-Republican hold. | ▌Y Thomas R. Mitchell (Democratic-Republican) 49.5% ▌Benjamin Huger (Federalist) 39.2% ▌John R. Wilson (Democratic-Republican) 11.3% |
| South Carolina 4 | James Overstreet | Democratic-Republican | 1818 | Incumbent re-elected. | ▌Y James Overstreet (Democratic-Republican) 70.3% ▌John M. Felder (Federalist) 29.7% |
| South Carolina 5 | Starling Tucker | Democratic-Republican | 1816 | Incumbent re-elected. | ▌Y Starling Tucker (Democratic-Republican) ▌William Strother (Democratic-Republican) |
| South Carolina 6 | Eldred Simkins | Democratic-Republican | 1818 (special) | Incumbent retired. Democratic-Republican hold. | ▌Y George McDuffie (Democratic-Republican) 100% |
| South Carolina 7 | Elias Earle | Democratic-Republican | 1804 1814 (lost) 1816 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y John Wilson (Democratic-Republican) 55.8% ▌Elias Earle (Democratic-Republican) 44.2% |
| South Carolina 8 | John McCreary | Democratic-Republican | 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Joseph Gist (Democratic-Republican) 50.7% ▌John McCreary (Democratic-Republican) 49.3% |
| South Carolina 9 | Joseph Brevard | Democratic-Republican | 1818 | Incumbent retired. Democratic-Republican hold. Winner declined to serve, leading to a special election sometime in 1821. | ▌Y John S. Richards (Democratic-Republican) 100% |

## Tennessee

Tennessee elected its members August 9–10, 1821, after the term began but before the new Congress convened.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Tennessee 1 | John Rhea | Democratic-Republican | 1803 1815 (lost) 1817 | Incumbent re-elected. | ▌Y John Rhea (Democratic-Republican) 40.4% ▌John Tipton (Unknown) 35.6% ▌John A. Rogers (Unknown) 24.1% |
| Tennessee 2 | John Cocke | Democratic-Republican | 1819 | Incumbent re-elected. | ▌Y John Cocke (Democratic-Republican) 100% |
| Tennessee 3 | Francis Jones | Democratic-Republican | 1817 | Incumbent re-elected. | ▌Y Francis Jones (Democratic-Republican) 99.6% ▌Reuben Lidwell (Unknown) 0.4% |
| Tennessee 4 | Robert Allen | Democratic-Republican | 1819 | Incumbent re-elected. | ▌Y Robert Allen (Democratic-Republican) 100% |
| Tennessee 5 | Newton Cannon | Democratic-Republican | 1814 (special) 1817 (lost) 1819 | Incumbent re-elected. | ▌Y Newton Cannon (Democratic-Republican) 99.0% ▌Fitzgerald Beasley (Unknown) 1.0% |
| Tennessee 6 | Henry H. Bryan | Democratic-Republican | 1819 | Incumbent re-elected. Winner never appeared to take his seat. | ▌Y Henry H. Bryan (Democratic-Republican) 62.5% ▌Eldridge B. Robertson (Unknown) 34.5% ▌Colmore Duvall (Unknown) 3.0% |

## Vermont

In 1820, Vermont returned to using districts. This would be the only election in which the 6th district would be used.
Vermont elected its members September 5, 1820. A majority was required for election, which was not met in the 2nd or 3rd district, requiring additional ballots to achieve a majority. The 2nd district required 7 ballots. The 3rd district required two additional ballots. The additional ballots were held December 11, 1820, and February 19, May 1, July 2, September 4, and October 22, 1821.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Vermont 1 | Rollin Carolas Mallary Redistricted from the at-large district | Democratic- Republican | 1818 | Incumbent re-elected. | ▌Y Rollin Carolas Mallary (Democratic-Republican) 51.9% ▌Orsamus Cook Merrill (Democratic-Republican) 31.1% ▌Chauncey Langdon (Federalist) 14.9% Others 2.1% |
| Vermont 2 | Mark Richards Redistricted from the at-large district | Democratic- Republican | 1816 | Incumbent lost re-election. Democratic-Republican hold. | First ballot (September 5, 1820) ▌Phineas White (Democratic-Republican) 37.4% ▌Mark Richards (Democratic-Republican) 34.5% ▌James Elliot (Federalist) 15.8% ▌William Hall Jr. (Federalist) 4.2% ▌Samuel Elliot (Federalist) 2.7% ▌Aaron Leland (Democratic-Republican) 2.5% Others 3.0% Second ballot (December 11, 1820) ▌Phineas White (Democratic-Republican) 41.3% ▌Mark Richards (Democratic-Republican) 37.2% ▌James Elliot (Federalist) 11.% ▌Samuel Elliot (Federalist) 4.4% ▌Jonathan Hunt (Federalist) 4.2% Others 1.8% Third ballot (February 19, 1821) ▌Phineas White (Democratic-Republican) 41.9% ▌Mark Richards (Democratic-Republican) 37.6% ▌James Elliot (Federalist) 12.1% ▌Thomas G. Fessenden (Independent) 3.6% ▌Aaron Leland (Democratic-Republican) 3.4% Others 1.4% Fourth ballot (May 1, 1821) ▌Mark Richards (Democratic-Republican) 43.6% ▌Phineas White (Democratic-Republican) 39.4% ▌James Elliot (Federalist) 7.9% ▌Aaron Leland (Democratic-Republican) 4.0% ▌Thomas G. Fessenden (Independent) 3.7% Others 1.5% Fifth ballot (July 2, 1821) ▌Mark Richards (Democratic-Republican) 48.6% ▌Phineas White (Democratic-Republican) 46.9% Others 4.5% Sixth ballot (September 4, 1821) ▌Mark Richards (Democratic-Republican) 48.4% ▌Phineas White (Democratic-Republican) 45.6% Others 6.1% Seventh ballot (October 22, 1821) ▌Y Phineas White (Democratic-Republican) 49.9% ▌Mark Richards (Democratic-Republican) 42.6% ▌James Elliot (Federalist) 2.9% ▌William Hall (Federalist) 1.6% ▌Martin Field (Democratic-Republican) 1.2% Others 1.8% |
| Vermont 3 | Charles Rich Redistricted from the at-large district | Democratic- Republican | 1812 1814 (lost) 1816 | Incumbent re-elected on the third ballot. | First ballot (September 5, 1820) ▌Charles Rich (Democratic-Republican) 38.9% ▌David Edmonds (Federalist) 27.9% ▌Ezra Meech (Democratic-Republican) 17.0% ▌Henry Olin (Democratic-Republican) 13.9% Others 2.3% Second ballot (December 11, 1820) ▌Charles Rich (Democratic-Republican) 49.7% ▌David Edmonds (Federalist) 42.4% ▌Ezra Meech (Democratic-Republican) 5.7% ▌Henry Olin (Democratic-Republican) 2.2% Third ballot (February 19, 1821) ▌Y Charles Rich (Democratic-Republican) 50.6% ▌David Edmonds (Federalist) 41.2% ▌Ezra Meech (Democratic-Republican) 8.2% |
| Vermont 3 | Ezra Meech Redistricted from the at-large district | Democratic- Republican | 1818 | Incumbent lost re-election. Democratic-Republican loss. | First ballot (September 5, 1820) ▌Charles Rich (Democratic-Republican) 38.9% ▌David Edmonds (Federalist) 27.9% ▌Ezra Meech (Democratic-Republican) 17.0% ▌Henry Olin (Democratic-Republican) 13.9% Others 2.3% Second ballot (December 11, 1820) ▌Charles Rich (Democratic-Republican) 49.7% ▌David Edmonds (Federalist) 42.4% ▌Ezra Meech (Democratic-Republican) 5.7% ▌Henry Olin (Democratic-Republican) 2.2% Third ballot (February 19, 1821) ▌Y Charles Rich (Democratic-Republican) 50.6% ▌David Edmonds (Federalist) 41.2% ▌Ezra Meech (Democratic-Republican) 8.2% |
| Vermont 4 | William Strong Redistricted from the at-large district | Democratic- Republican | 1810 1814 (lost) 1818 | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Elias Keyes (Democratic-Republican) 50.6% ▌Horace Everett (Democratic-Republican) 24.8% ▌Uriel C. Hatch (Democratic-Republican) 15.8% ▌William Strong (Democratic-Republican) 5.8% Others 3.0% |
| Vermont 5 | Samuel C. Crafts Redistricted from the at-large district | Democratic- Republican | 1816 | Incumbent re-elected. | ▌Y Samuel C. Crafts (Democratic-Republican) 58.6% ▌Heman Allen (Democratic-Republican) 40.1% Others 1.3% |
| Vermont 6 | None (new district) | None (new district) | None (new district) | New seat. Democratic-Republican gain. | ▌Y John Mattocks (Democratic-Republican) 54.3% ▌D. Azro A. Buck (Democratic-Republican) 41.7% ▌William Cahoon (Democratic-Republican) 1.9% Others 2.1% |

## Virginia

Virginia elected its members in April 1821, after the term began but before the new Congress convened.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Member | Party | First elected | Results | Candidates |
| Virginia 1 | Edward B. Jackson | Democratic-Republican | 1820 (special) | Incumbent re-elected. | ▌Y Edward B. Jackson (Democratic-Republican) ▌Thomas Wilson (Federalist) |
| Virginia 2 | Thomas Van Swearingen | Federalist | 1819 | Incumbent re-elected. | ▌Y Thomas Van Swearingen (Federalist) 83.2% ▌Robert Bailey (Democratic-Republican) 16.8% |
| Virginia 3 | Jared Williams | Democratic-Republican | 1819 | Incumbent re-elected. | ▌Y Jared Williams (Democratic-Republican) 63.3% ▌William Steinbergen (Democratic-Republican) 36.7% |
| Virginia 4 | William McCoy | Democratic-Republican | 1811 | Incumbent re-elected. | ▌Y William McCoy (Democratic-Republican) 100% |
| Virginia 5 | John Floyd | Democratic-Republican | 1817 | Incumbent re-elected. | ▌Y John Floyd (Democratic-Republican) 100% |
| Virginia 6 | Alexander Smyth | Democratic-Republican | 1817 | Incumbent re-elected. | ▌Y Alexander Smyth (Democratic-Republican) 100% |
| Virginia 7 | Ballard Smith | Democratic-Republican | 1815 | Incumbent retired. Democratic-Republican hold. | ▌Y William Smith (Democratic-Republican) 53.2% ▌James Wilson (Democratic-Republican) 46.8% |
| Virginia 8 | Charles F. Mercer | Federalist | 1817 | Incumbent re-elected. | ▌Y Charles F. Mercer (Federalist) 55.0% ▌Sydnor Bailey (Democratic-Republican) 44.8% |
| Virginia 9 | William Lee Ball | Democratic-Republican | 1817 | Incumbent re-elected. | ▌Y William Lee Ball (Democratic-Republican) ▌John P. Hungerford (Democratic-Republican) |
| Virginia 10 | Thomas L. Moore | Democratic-Republican | 1820 (special) | Incumbent re-elected. | ▌Y Thomas L. Moore (Democratic-Republican) ▌Mark A. Chilton (Democratic-Republican) |
| Virginia 11 | Philip P. Barbour | Democratic-Republican | 1814 (special) | Incumbent re-elected. | ▌Y Philip P. Barbour (Democratic-Republican) 100% |
| Virginia 12 | Robert S. Garnett | Democratic-Republican | 1817 | Incumbent re-elected. | ▌Y Robert S. Garnett (Democratic-Republican) 100% |
| Virginia 13 | Severn E. Parker | Democratic-Republican | 1819 | Incumbent retired. Democratic-Republican hold. | ▌Y Burwell Bassett (Democratic-Republican) 66.6% ▌John Patterson (Federalist) 30.0% ▌Brazure W. Pryor (Federalist) 3.4% |
| Virginia 14 | William A. Burwell | Democratic-Republican | 1806 (special) | Incumbent retired. Democratic-Republican hold. | ▌Y Jabez Leftwich (Democratic-Republican) ▌James Calloway (Democratic-Republican) |
| Virginia 15 | George Tucker | Democratic-Republican | 1819 | Incumbent re-elected. | ▌Y George Tucker (Democratic-Republican) 87.5% ▌William R. Roane (Federalist) 12.5% |
| Virginia 16 | John Randolph | Democratic-Republican | 1799 1813 (lost) 1815 1817 (lost) 1819 | Incumbent re-elected. | ▌Y John Randolph (Democratic-Republican) ▌Archibald Austin (Democratic-Republican) |
| Virginia 17 | William S. Archer | Democratic-Republican | 1820 (special) | Incumbent re-elected. | ▌Y William S. Archer (Democratic-Republican) 100% |
| Virginia 18 | Mark Alexander | Democratic-Republican | 1819 | Incumbent re-elected. | ▌Y Mark Alexander (Democratic-Republican) 100% |
| Virginia 19 | James Jones | Democratic-Republican | 1819 | Incumbent re-elected. | ▌Y James Jones (Democratic-Republican) 100% |
| Virginia 20 | John C. Gray | Democratic-Republican | 1820 (special) | Incumbent lost re-election. Democratic-Republican hold. | ▌Y Arthur Smith (Democratic-Republican) 60.3% ▌John C. Gray (Democratic-Republican) 39.7% |
| Virginia 21 | Thomas Newton Jr. | Democratic-Republican | 1797 | Incumbent re-elected. | ▌Y Thomas Newton Jr. (Democratic-Republican) 94.7% Others 5.3% |
| Virginia 22 | Hugh Nelson | Democratic-Republican | 1811 | Incumbent re-elected. | ▌Y Hugh Nelson (Democratic-Republican) 100% |
| Virginia 23 | John Tyler | Democratic-Republican | 1816 (special) | Incumbent retired. Democratic-Republican hold. | ▌Y Andrew Stevenson (Democratic-Republican) 100% |

## Non-voting delegates

There were four territories that had the right to send a delegate to at least part of the 17th Congress, only three of which actually sent delegates. Missouri Territory's seat remained vacant, as the territory was admitted as the State of Missouri early in the 17th Congress.
| District | Incumbent | Incumbent | Incumbent | This race | This race |
| District | Delegate | Party | First elected | Results | Candidates |
| Arkansas Territory at-large | James Woodson Bates | None | 1819 | Incumbent re-elected. | ▌Y James Woodson Bates 51.5% ▌Matthew Lyon (Democratic-Republican) 48.5% |
| Michigan Territory at-large | Solomon Sibley | None | 1820 (special) | Incumbent re-elected sometime in 1821. | ▌Y Solomon Sibley (Democratic-Republican) 47.0% ▌Augustus B. Woodward 28.2% ▌James MacCloskey 24.5% Others 0.3% |