15th United States Congress - Membership Changes

The Fifteenth United States Congress was a meeting of the legislative branch of the United States federal government, comprised of the United States Senate and the United States House of Representatives. It met in the old Brick Capitol in Washington, DC from March 4 1817 to March 3 1819, during the first two years of the first administration of U.S. President James Monroe.

The apportionment of seats in this House of Representatives was based on the Third Census of the United States in 1810. Both chambers had a Democratic-Republican majority.

See also: 15th United States Congress - political parties
See also: 15th United States Congress - State Delegations
See also: United States House elections, 1816

Dates of sessions

March 4 1817 - March 3 1819

  • Special session of the Senate: March 4 1817 - March 6 1817
  • First session: December 1 1817 - April 20 1818
  • Second session: November 16 1818 - March 3 1819 — a lame duck session

Previous congress: 14th Congress
Next congress: 16th Congress

Membership changes

The count below reflects changes from the beginning of the first session of this Congress.

Senate
  • replacements: 4
    • Democratic-Republicans: no net change
    • Federalists: no net change
  • deaths: 1
  • resignations: 8
  • seats of newly admitted states: 4
  • Total seats with changes: 11
House of Representatives
  • replacements: 10
    • Democratic-Republicans: no net change
    • Federalists: no net change
  • deaths: 4
  • resignations: 11
  • seats of newly admitted states: 2
  • Total seats with changes: 17

Senate

State

Outgoing Senator

Reason for Change

Successor

Georgia
class 2

|

George M. Troup
Dem.-Rep.

Resignation.
Senator George M. Troup resigned September 23 1818.

|

Georgia
class 2

|

John Forsyth
Dem.-Rep.

Resignation.
Senator John Forsyth resigned February 17 1819.

|

Illinois
class 2

|

vacant

New state.
Illinois was admitted to the Union December 3 1818.

|

Illinois
class 3

|

vacant

New state.
Illinois was admitted to the Union December 3 1818.

|

Kentucky
class 2

|

John J. Crittenden
Dem.-Rep.

Resignation.
Senator John J. Crittenden resigned March 3 1819.

|

Louisiana
class 2

|

William C.C. Claiborne
Dem.-Rep.

Death.
Senator William C.C. Claiborne died November 23 1817, never having qualified.

|

Massachusetts
class 1

|

Eli P. Ashmun
Fed.

Resignation.
Senator Eli P. Ashmun resigned May 10 1818.

|

Mississippi
class 1

|

vacant

New state.
Mississippi was admitted to the Union December 10 1817.

|

Mississippi
class 2

|

vacant

New state.
Mississippi was admitted to the Union December 10 1817.

|

New Hampshire
class 3

|

Jeremiah Mason
Fed.

Resignation.
Senator Jeremiah Mason resigned June 16 1817.

|

Tennessee
class 1

|

George W. Campbell
Fed.

Resignation.
Senator George W. Campbell resigned April 20 1818.

|

Vermont
class 3

|

Dudley Chase
Dem.-Rep.

Resignation.
Senator Dudley Chase resigned November 3 1817.

|

Vermont
class 3

|

James Fisk
Dem.-Rep.

Resignation.
Senator James Fisk resigned January 8 1818.

|

House of Representatives

State

Outgoing Representative

Reason for Change

Successor

|

Uriel Holmes
Fed.

Resignation.
Representative Uriel Holmes resigned in 1818.

|

|

John Forsyth
Dem.-Rep.

Resignation.
Representative John Forsyth resigned November 23 1818.

|

|

vacant

New state.
Illinois was admitted to the Union December 3 1818.

|

|

Thomas B. Robertson
Dem.-Rep.

Resignation.
Representative Thomas B. Robertson resigned April 20 1818.

|

|

Albion K. Parris
Dem.-Rep.

Resignation.
Representative Albion K. Parris resigned June 15 1820.

|

|

vacant

New state.
Mississippi was admitted to the Union December 10 1817.

|

|

Henry B. Lee
Dem.-Rep.

Death.
Representative-elect Henry B. Lee died February 18 1817, before Congress assembled.

|

|

Alexander McMillan
Fed.

Death.
Representative Alexander McMillan died before Congress assembled.

|

|

George Mumford
Dem.-Rep.

Death.
Representative George Mumford died December 31 1818.

|

|

Daniel M. Forney
Dem.-Rep.

Resignation.
Representative Daniel M. Forney resigned in 1818.

|

|

Jacob Spangler
Dem.-Rep.

Resignation.
Representative Jacob Spangler resigned April 20 1818.

|

|

Samuel D. Ingham
Dem.-Rep.

Resignation.
Representative Samuel D. Ingham resigned July 6 1818.

|

|

John Ross
Dem.-Rep.

Resignation.
Representative John Ross resigned February 24 1818.

|

|

David Scott
Dem.-Rep.

Resignation.
Representative David Scott resigned before Congress assembled.

|

|

John C. Calhoun
Dem.-Rep.

Resignation.
Representative John C. Calhoun resigned November 3 1817.

|

|

Heman Allen
Dem.-Rep.

Resignation.
Representative Heman Allen resigned April 20 1818.

|

|

Peterson Goodwyn
Dem.-Rep.

Death.
Representative Peterson Goodwyn February 21 1818.

|

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