12th United States Congress - Membership Changes

The Twelfth 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 Washington, DC from March 4 1811 to March 3 1813, during the last two years of the first administration of U.S. President James Madison.

The apportionment of seats in this House of Representatives was based on the Second Census of the United States in 1800. Both chambers had a Democratic-Republican majority.

Main article: 12th United States Congress
See also: 12th United States Congress - political parties
See also: 12th United States Congress - State Delegations
See also: United States House elections, 1810

Dates of sessions

March 4 1811 - March 3 1813

  • First session: November 4 1811 - July 6 1812
  • Second session: November 2 1812 - March 3 1813 — a lame duck session

Previous congress: 11th Congress
Next congress: 13th Congress

Membership changes

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

Senate
  • replacements: 1
    • Democratic-Republicans: no net change
    • Federalists: no net change
  • deaths: 0
  • resignations: 4
  • interim appointments: 1
  • seats of newly admitted states: 2
  • vacancies:1
  • Total seats with changes: 6
House of Representatives
  • replacements: 3
    • Democratic-Republicans: no net change
    • Federalists: no net change
  • deaths: 2
  • resignations: 5
  • contested election: 1
  • seats of newly admitted states: 1
  • vacancies: 1
  • Total seats with changes: 10

Senate

State

Outgoing Senator

Reason for Change

Successor

Delaware
class 2

|

James A. Bayard
Fed.

Resignation.
Senator James A. Bayard resigned March 3 1813.

|

Louisiana
class 2

|

vacant

Newly admitted state.
Louisiana was admitted to the union April 30 1812.

|

Louisiana
class 2

|

Jean N. Destréhan
Dem.-Rep.

Resignation.
Senator Jean N. Destréhan resigned October 1 1812, never having qualified.

|

Louisiana
class 2

|

Thomas Posey
Dem.-Rep.

Interim appointment.
William W. Bibb was elected November 6 1813.

|

Louisiana
class 3

|

vacant

Newly admitted state.
Louisiana was admitted to the union April 30 1812.

|

Massachusetts
class 2

|

vacant

Vacancy.
Vacancy in this class

|

Rhode Island
class 1

|

Christopher G. Champlin
Fed.

Resignation.
Senator Christopher G. Champlin resigned October 2 1811.

|

Tennessee
class 2

|

Jenkin Whiteside
Dem.-Rep.

Resignation.
Senator Jenkin Whiteside resigned October 8 1811.

|

House of Representatives

State

Outgoing Representative

Reason for Change

Successor

|

Howell Cobb
Dem.-Rep.

Resignation.
Representative Howell Cobb resigned before October 5 1812.

|

|

vacant

Newly admitted state.
Louisiana was admitted to the union April 30 1812.

|

|

John Montgomery
Dem.-Rep.

Resignation.
Representative John Montgomery resigned before Congress assembled.

|

|

vacant

Vacancy.
Vacancy from previous Congress

|

|

Joseph B. Varnum
Dem.-Rep.

Resignation.
Representative Joseph B. Varnum resigned June 29 1811, having been elected Senator

|

|

Barzillai Gannett
Dem.-Rep.

Resignation.
Representative Barzillai Gannett resigned in 1812, never having qualified.

|

|

Robert Le Roy Livingston
Fed.

Resignation.
Representative Robert Le Roy Livingston resigned May 6 1812.

|

|

Thomas Blount
Dem.-Rep.

Death.
Representative Thomas Blount died February 7 1812.

|

|

John Smilie
Dem.-Rep.

Death.
Representative John Smilie died December 30 1812.

|

|

John P. Hungerford
Dem.-Rep.

Contested election.
Representative John P. Hungerford served until November 29 1811.

|

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