31st United States Congress



The Thirty-first United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1849 to March 3, 1851, during the administration of U.S. President Zachary Taylor and the first months of the administration of his successor, U.S. President Millard Fillmore.

The apportionment of seats in this House of Representatives was based on the Sixth Census of the United States in 1840. The Senate had a Democratic majority, while there was a Democratic plurality in the House.

Dates of sessions
March 4, 1849 - March 3, 1851
 * Special session of the Senate: March 5, 1849 - March 23, 184
 * First session: December 3, 1849 - September 30, 1850
 * Second session: December 2, 1850 - March 3, 1851
 * Previous congress: 30th Congress
 * Next congress: 32nd Congress

Party summary
The count below identifies party affiliations at the beginning of the first session of this Congress, and includes members from vacancies and newly admitted states, when they were first seated. Changes resulting from subsequent replacements are shown below in the "Changes in membership" section.

Major events
Events of 1849, 1850 and 1851
 * March 4, 1849 -- Zachary Taylor became President of the United States
 * July 10, 1850 -- Millard Fillmore became President of the United States

Major legislation
List of United States federal legislation in the 31st Congress
 * September 9, 1850 -- Compromise of 1850
 * Texas borders were changed
 * September 9, 1850 -- California was admitted as a state into the Union. It was formed from the territory ceded by Mexico
 * September 9, 1850 -- New Mexico Territory was formed from territory ceded by Mexico
 * September 9, 1850 -- Utah Territory was formed from territory ceded by Mexico
 * September 18, 1850 -- Fugitive Slave Act
 * September 2, 1850 -- Donation Land Claim Act

Membership highlights by chamber
This list is arranged by chamber, then by state. Senators are listed in order of seniority, and Representatives are listed by district.

Senate
Senators were elected by the state legislatures every two years, with one-third beginning new six year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term ended with this Congress, requiring reelection in 1850; Class 2 meant their term began in the last Congress, requiring reelection in 1852; and Class 3 meant their term began in this Congress, requiring reelection in 1854.

House of Representatives
The names of members of the House of Representatives elected statewide on the general ticket or otherwise at-large, are preceded by an "A/L," and the names of those elected from districts, whether plural or single member, are preceded by their district numbers.

Many of the congressional district numbers are linked to articles describing the district itself. Since the boundaries of the districts have changed often and substantially, the linked article may only describe the district as it exists today, and not as it was at the time of this Congress.

Membership detail by state
Senators were elected by the state legislatures every two years, with one-third beginning new six year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term ended with this Congress, requiring reelection in 1850; Class 2 meant their term began in the last Congress, requiring reelection in 1852; and Class 3 meant their term began in this Congress, requiring reelection in 1854.

The names of members of the House of Representatives elected statewide on the general ticket or otherwise at-large, are preceded by an "A/L," and the names of those elected from districts, whether plural or single member, are preceded by their district numbers.

Many of the congressional district numbers are linked to articles describing the district itself. Since the boundaries of the districts have changed often and substantially, the linked article may only describe the district as it exists today, and not as it was at the time of this Congress.

The list below is arranged by state, then by chamber. Senators are shown in order of seniority, House members in district order.

Alabama

 * Senate


 * 3: William R. D. King (1786-1853), Democratic
 * 2: Benjamin Fitzpatrick (1802-1869), Democratic
 * Jeremiah Clemens (1814-1865), Democratic …elected to fill vacancy from preceding Congress, November 30, 1849.
 * House of Representatives (7 seats)


 * 1: William J. Alston (1800-1876), Whig
 * 2: Henry W. Hilliard (1808-1892), Whig
 * 3: Sampson W. Harris (1809-1857), Democratic
 * 4: Samuel W. Inge (1817-1868), Democratic
 * 5: David Hubbard (1792-1874), Democratic
 * 6: Williamson R. W. Cobb (1807-1864), Democratic
 * 7: Franklin W. Bowdon (1817-1857), Democratic

Arkansas

 * Senate


 * 3: Solon Borland (1808-1864), Democratic
 * 2: William K. Sebastian (1812-1865), Democratic
 * House of Representatives (1 seat)


 * A/L: Robert W. Johnson (1814-1879), Democratic

California

 * Senate


 * 3: William M. Gwin (1805-1885), Democratic …newly admitted state, elected September 9, 1850.
 * 1: John C. Frémont (1813-1890), Democratic …newly admitted state, elected September 9, 1850.
 * House of Representatives (2 seats)


 * A/L: Edward Gilbert (1819c-1852), Democratic …newly admitted state, seated September 11, 1850.
 * A/L: George W. Wright (1816-1885), Independent …newly admitted state, seated September 11, 1850.

Connecticut

 * Senate


 * 1: Roger S. Baldwin (1793-1863), Whig
 * 3: Truman Smith (1791-1884), Whig
 * House of Representatives (4 seats)


 * 1: Loren P. Waldo (1802-1881), Democratic
 * 2: Walter Booth (1791-1870), Free Soil
 * 3: Chauncey F. Cleveland (1799-1887), Democratic
 * 4: Thomas B. Butler (1806-1873), Whig

Delaware

 * Senate


 * 2: Presley Spruance (1785-1863), Whig
 * 1: John Wales (1783-1863), Whig
 * House of Representatives (1 seat)


 * A/L: John W. Houston (1814-1896), Whig

Florida

 * Senate


 * 1: David Levy Yulee (1810-1886), Democratic
 * 3: Jackson Morton (1794-1874), Whig
 * House of Representatives (1 seat)


 * A/L: Edward C. Cabell (1816-1896), Whig

Georgia

 * Senate


 * 2: John Mcpherson Berrien (1781-1856), Whig
 * 3: William C. Dawson (1798-1856), Whig
 * House of Representatives (8 seats)


 * 1: Thomas B. King (1800-1864), Whig …resigned in 1850.
 * Joseph W. Jackson (1796-1854), Democratic …elected to fill vacancy, March 4, 1850.
 * 2: Marshall J. Wellborn (1808-1874), Democratic
 * 3: Allen F. Owen (1816-1865), Whig
 * 4: Hugh A. Haralson (1805-1854), Democratic
 * 5: Thomas C. Hackett ( -1851), Democratic
 * 6: Howell Cobb (1815-1868), Democratic
 * 7: Alexander H. Stephens (1812-1883), Whig
 * 8: Robert A. Toombs (1810-1885), Whig

Illinois

 * Senate


 * 2: Stephen A. Douglas (1813-1861), Democratic
 * 3: James Shields (1806/1810-1879), Democratic …seat declared vacant March 15, 1894, subsequently elected to fill vacancy October 27, 1849.
 * House of Representatives (7 seats)


 * 1: William H. Bissell (1811-1860), Democratic
 * 2: John A. McClernand (1812-1900), Democratic
 * 3: Timothy R. Young (1811-1898), Democratic
 * 4: John Wentworth (1815-1888), Democratic
 * 5: William A. Richardson (1811-1875), Democratic
 * 6: Edward D. Baker (1811-1861), Whig
 * 7: Thomas L. Harris (1816-1858), Democratic

Indiana

 * Senate


 * 1: Jesse D. Bright (1812-1875), Democratic
 * 3: James Whitcomb (1795-1852), Democratic
 * House of Representatives (10 seats)


 * 1: Nathaniel Albertson (1800-1863), Democratic
 * 2: Cyrus L. Dunham (1817-1877), Democratic
 * 3: John L. Robinson (1813-1860), Democratic
 * 4: George W. Julian (1817-1899), Free Soil
 * 5: William J. Brown (1805-1857), Democratic
 * 6: Willis A. Gorman (1816-1876), Democratic
 * 7: Edward W. McGaughey (1817-1852), Whig
 * 8: Joseph E. McDonald (1819-1891), Democratic
 * 9: Graham N. Fitch (1809-1892), Democratic
 * 10: Andrew J. Harlan (1815-1907), Democratic

Iowa

 * Senate


 * 3: Augustus C. Dodge]] (1812-1883), Democratic
 * 2: George W. Jones (1804-1896), Democratic
 * House of Representatives (2 seats)


 * 1: William Thompson (1813-1897), Democratic …contested election, served until June 2, 1850.
 * Daniel F. Miller (1814-1895), Whig …elected to fill vacancy, seated December 20, 1850.
 * 2: Shepherd Leffler (1811-1879), Democratic

Kentucky

 * Senate


 * 2: Joseph R. Underwood (1791-1876), Whig
 * 3: Henry Clay (1777-1852), Whig
 * House of Representatives (10 seats)


 * 1: Linn Boyd (1800-1859), Democratic
 * 2: James L. Johnson (1818-1877), Whig
 * 3: Finis E. McLean (1806-1881), Whig
 * 4: George A. Caldwell (1814-1866), Democratic
 * 5: John B. Thompson (1810-1874), Whig
 * 6: Daniel Breck (1788-1871), Whig
 * 7: Humphrey Marshall (1812-1872), Whig
 * 8: Charles S. Morehead (1802-1868), Whig
 * 9: John C. Mason (1802-1865), Democratic
 * 10: Richard H. Stanton (1812-181), Democratic

Louisiana

 * Senate


 * 2: Solomon W. Downs (1801-1854), Democratic
 * 3: Pierre Soulé (1801-1870), Democratic
 * House of Representatives (4 seats)


 * 1: Emile La Sére (1802-1882), Democratic
 * 2: Charles M. Conrad (1804-1878), Whig …resigned August 17, 1850.
 * Henry A. Bullard (1788-1851), Whig …elected to fill vacancy, seated December 5, 1850.
 * 3: John H. Harmanson (1803-1850), Democratic …died October 25, 1850.
 * Alexander G. Penn (1799-1866), Democratic …elected to fill vacancy, seated December 30, 1850.
 * 4: Isaac E. Morse (1809-1866), Democratic

Maine

 * Senate


 * 2: James W. Bradbury (1802-1901), Democratic
 * 1: Hannibal Hamlin (1809-1891), Democratic
 * House of Representatives (7 seats)


 * 1: Elbridge Gerry (1813-1886), Democratic
 * 2: Nathaniel S. Littlefield (1804-1882), Democratic
 * 3: John Otis (1801-1856), Whig
 * 4: Rufus K. Goodenow (1790-1863), Whig
 * 5: Cullen Sawtelle (1805-1887), Democratic
 * 6: Charles Stetson (1801-1863), Democratic
 * 7: Thomas J. D. Fuller (1808-1876), Democratic

Maryland

 * Senate


 * 3: James A. Pearce (1805-1862), Whig
 * 1: Reverdy Johnson (1796-1876), Whig …resigned March 7, 1849.
 * David Stewart (1800-1858), Whig …appointed to fill vacancy, December 6, 1849.
 * Thomas G. Pratt (1804-1869), Whig …elected to fill vacancy, January 12, 1850.
 * House of Representatives ( seats)


 * 1: Richard J. Bowie (1807-1881), Whig
 * 2: William T. Hamilton (1820-1888), Democratic
 * 3: Edward Hammond (1812-1882), Democratic
 * 4: Robert M. McLane (1815-1898), Democratic
 * 5: Alexander Evans (1818-1888), Whig
 * 6: John B. Kerr (180-1878), Whig

Massachusetts

 * Senate


 * 1: Daniel Webster (1782-1852), Whig …resigned July 22, 1850.
 * Robert C. Winthrop (1800-1894), Whig …appointed to fill vacancy, July 30, 1850.
 * Robert J. Rantoul, Jr. (1805-1852), Democratic …elected to fill vacancy, seated February 1, 1851.
 * 2: John Davis (1787-1854), Whig
 * House of Representatives (10 seats)


 * 1: Robert C. Winthrop (1809-1894), Whig …resigned July 30, 1850.
 * Samuel A. Eliot (1798-1862), Whig …elected to fill vacancy, seated August 22, 1850.
 * 2: Daniel P. King (1801-1850), Whig …died July 25, 1850.
 * 3: James H. Duncan (1793-1869), Whig
 * 4: vacant
 * 5: Charles Allen (1797-1869), Free Soil
 * 6: George Ashmun (1804-1870), Whig
 * 7: Julius Rockwell (1805-1888), Whig
 * 8: Horace Mann (1796-1859), Whig
 * 9: Orin Fowler (1791-1852), Whig
 * 10: Joseph Grinnell (1788-1885), Whig

Michigan

 * Senate


 * 1: Lewis Cass (1782-1866), Democratic
 * 2: Alpheus Felch (1804-1896), Democratic
 * House of Representatives (3 seats)


 * 1: Alexander W. Buel (1813-1868), Democratic
 * 2: William Sprague (1809-1868), Whig
 * 3: Kinsley S. Bingham (1808-1861), Democratic

Mississippi

 * Senate


 * 2: Henry S. Foote (1804-1880), Democratic
 * 1: Jefferson Davis (1808-1889), Democratic
 * House of Representatives (4 seats)


 * 1: Jacob Thompson (1810-1885), Democratic
 * 2: Winfield S. Featherston (1820-1891), Democratic
 * 3: William McWillie (1795-1869), Democratic
 * 4: Albert G. Brown (1813-1880), Democratic

Missouri

 * Senate


 * 1: Thomas H. Benton (1782-1858), Democratic
 * 3: David R. Atchison (1807-1886), Democratic
 * House of Representatives (5 seats)


 * 1: James B. Bowlin (1804-1874), Democratic
 * 2: William V. Bay (1818-1894), Democratic
 * 3: James S. Green (1817-1870), Democratic
 * 4: Willard P. Hall (1820-1882), Democratic
 * 5: John S. Phelps (1814-1886), Democratic

New Hampshire

 * Senate


 * 2: John P. Hale (1806-1873), Free Soil
 * 3: Moses Norris, Jr. (1799-1855), Democratic
 * House of Representatives (4 seats)


 * 1: Amos Tuck (1810-1879), Free Soil
 * 2: Charles H. Peaslee (1804-1866), Democratic
 * 3: James Wilson (1797-1881), Whig …resigned September 9, 1850.
 * George W. Morrison (1809-1888), Democratic …elected to fill vacancy, seated December 2, 1850.
 * 4: Harry Hibbard (1816-1872), Democratic

New Jersey

 * Senate


 * 2: Jacob W. Miller (1800-1862), Whig
 * 1: William L. Dayton (1807-1864), Whig
 * House of Representatives (5 seats)


 * 1: Andrew K. Hay (1809-1881), Whig
 * 2: William A. Newell (1817-1901), Whig
 * 3: Isaac Wildrick (1803-1892), Democratic
 * 4: John Van Dyke (1807-1878), Whig
 * 5: James G. King (171-1853), Whig

New York

 * Senate


 * 1: Daniel S. Dickinson (1800-1866), Democratic
 * 3: William H. Seward (1801-1872), Whig
 * House of Representatives (34 seats)


 * 1: John A. King (1788-1867), Whig
 * 2: David A. Bokee (1805-1860), Whig
 * 3: J. Phillips Phoenix (1788-1859), Whig
 * 4: Walter Underhill (1795-1866), Whig
 * 5: George Briggs (1805-1869), Whig
 * 6: James Brooks (1810-1873), Whig
 * 7: William Nelson (1784-1869), Whig
 * 8: Ransom Halloway (1793c-1851), Whig
 * 9: Thomas McKissock (1790-1866), Whig
 * 10: Herman D. Gould (1799-1852), Whig
 * 11: Peter H. Silvester (1807-1882), Whig
 * 12: Gideon Reynolds (1813-1896), Whig
 * 13: John L. Schoolcraft (1804-1860), Whig
 * 14: George R. Andrews (1808-1873), Whig
 * 15: John R. Thurman (1814-1854), Whig
 * 16: Hugh White (1798-1870), Whig
 * 17: Henry P. Alexander (1801-1867), Whig
 * 18: Preston King (1806-1865), Free Soil
 * 19: Charles E. Clarke (1790-1863), Whig
 * 20: Orsamus B. Matteson (1805-1889), Whig
 * 21: Hiram Walden (1800-1880), Democratic
 * 22: Henry Bennett (1808-1868), Whig
 * 23: William Duer (1805-1879), Whig
 * 24: Daniel Gott (1794-1864), Whig
 * 25: Harmon S. Conger (1816-1882), Whig
 * 26: William T. Jackson (1794-1882), Whig
 * 27: William A. Sackett (1811-1895), Whig
 * 28: Abraham M. Schermerhorn (1791-1855), Whig
 * 29: Robert L. Rose (1804-1877), Whig
 * 30: David Rumsey, Jr. (1810-1883), Whig
 * 31: Elijah Risley (1787-1870), Whig
 * 32: Elbridge G. Spaulding (1809-1897), Whig
 * 33: Harvey Putnam (1793-1855), Whig
 * 34: Lorenzo Burrows (1805-1885), Whig

North Carolina

 * Senate


 * 2: Willie P. Mangum (1792-1861), Whig
 * 3: George E. Badger (1795-1866), Whig
 * House of Representatives ( seats)


 * 1: Thomas L. Clingman (1812-1897), Whig
 * 2: Joseph P. Caldwell (1808-1853), Whig
 * 3: Edmund Deberry (1787-1859), Whig
 * 4: Augustine H. Shepperd (1792-1864), Whig
 * 5: Abraham W. Venable (1799-1876), Democratic
 * 6: John R. J. Daniel (1802-1868), Democratic
 * 7: William S. Ashe (1814-1862), Democratic
 * 8: Edward Stanly (1810-1872), Whig
 * 9: David Outlaw (1806-1868), Whig

Ohio

 * Senate


 * 1: Thomas Corwin (1794-1865), Whig …resigned July 20 1850.
 * Thomas Ewing (1789-1871), Whig …appointed to fill vacancy, July 20, 1850.
 * 3: Salmon P. Chase (1808-1873), Free Soil
 * House of Representatives (21 seats)


 * 1: David T. Disney (1803-1857), Democratic
 * 2: Lewis D. Campbell (1811-1882), Whig
 * 3: Robert C. Schenck (1809-1890), Whig
 * 4: Moses B. Corwin (1790-1872), Whig
 * 5: Emery D. Potter (1804-1869), Democratic
 * 6: Rodolphus Dickinson (1797-184), Democratic …died March 20, 1849
 * John Bell (1796-1869), Whig …elected to fill vacancy, seated January 7, 1851.
 * Amos E. Wood (1810-1850), Democratic …elected to fill vacancy, seated December 3, 1849, died November 1, 1850.
 * 7: Jonathan D. Morris (1804-1875), Democratic
 * 8: John L. Taylor (1805-1870), Whig
 * 9: Edson B. Olds (1802-1869), Democratic
 * 10: Charles Sweetser (1808-1864), Democratic
 * 11: John K. Miller (1819-1863), Democratic
 * 12: Samuel F. Vinton (1792-1862), Whig
 * 13: William A. Whittlesey (1796-1866), Democratic
 * 14: Nathan Evans (1804-1879), Whig
 * 15: William F. Hunter (1808-1874), Whig
 * 16: Moses Hoagland (1812-1865), Democratic
 * 17: Joseph Cable (1801-1880), Democratic
 * 18: David K. Cartter (1812-1887), Democratic
 * 19: John Crowell (1801-1883), Whig
 * 20: Joshua R. Giddings (1795-1864), Free Soil
 * 21: Joseph M. Root (1807-1879), Free Soil

Pennsylvania

 * Senate


 * 1: Daniel Sturgeon (1789-1878), Democratic
 * 3: James Cooper (1810-1863), Whig
 * House of Representatives (24 seats)


 * 1: Lewis C. Levin (1808-1860), American
 * 2: Joseph R. Chandler (1792-1880), Whig
 * 3: Henry D. Moore (1817-1887), Whig
 * 4: John Robbins, Jr. (1808-1880), Democratic
 * 5: John Freedley (1793-1851), Whig
 * 6: Thomas Ross (1806-1865), Democratic
 * 7: Jesse C. Dickey (1808-1890), Whig
 * 8: Thaddeus Stevens (1792-1868), Whig
 * 9: William Strong (1808-1895), Democratic
 * 10: Milo M. Dimmick (1811-1872), Democratic
 * 11: Chester P. Butler (1798-1850), Whig …died October 5, 1850.
 * John Brisbin (1818-1880), Democratic …elected to fill vacancy, seated January 13, 1851.
 * 12: David Wilmot (1814-1868), Democratic
 * 13: Joseph Casey (1814-1879), Whig
 * 14: Charles W. Pitman ( -1871), Whig
 * 15: Henry Nes (1799-1850), Whig …died September 10, 1850.
 * Joel B. Danner (1804-1885), Democratic …elected to fill vacancy, seated December 2, 1850.
 * 16: James X. McLanahan (1809-1861), Democratic
 * 17: Samuel Calvin (1811-1890), Whig
 * 18: Andrew J. Ogle (1822-1852), Whig
 * 19: Job Mann (175-1873), Democratic
 * 20: Robert R. Reed (1807-1864), Whig
 * 21: Moses Hampton (1803-1878), Whig
 * 22: John W. Howe (1801-1873), Free Soil
 * 23: James Thompson (1806-1874), Democratic
 * 24: Alfred Gilmore (1812-180), Democratic

Rhode Island

 * Senate


 * 1: Albert C. Greene (1792-1863), Whig
 * 2: John H. Clarke (178-1870), Whig
 * House of Representatives (2 seats)


 * 1: George G. King (1807-1870), Whig
 * 2: Nathan F. Dixon, Jr. (1812-1881), Whig

South Carolina

 * Senate


 * 2: John C. Calhoun (1782-1850), Democratic …died March 31, 1850.
 * Franklin H. Elmore (1799-1850), Democratic …appointed to fill vacancy, April 11, 1850, died May 2, 1850.
 * Robert W. Barnwell (1801-1882), Democratic …appointed to fill vacancy, June 4, 1850.
 * R. Barnwell Rhett (1800-1876), Democratic …elected to fill vacancy, December 18, 1850.
 * 3: Andrew P. Butler (1796-1857), Democratic
 * House of Representatives (7 seats)


 * 1: Daniel Wallace (1801-1859), Democratic
 * 2: James L. Orr (1822-1873), Democratic
 * 3: Joseph A. Woodward (1806-1885), Democratic
 * 4: Alexander D. Sims (1803-1848), Democratic …died November 16, 1848.
 * John McQueen (1804-1867), Democratic …elected to fill vacancy from preceding Congress.
 * 5: Armistead Burt (1802-1883), Democratic
 * 6: Isaac E. Holmes (1796-1867), Democratic
 * 7: William F. Colcock (1804-1889), Democratic

Tennessee

 * Senate


 * 1: Hopkins L. Turney (1797-1857), Democratic
 * 2: John Bell (1797-1869), Whig
 * House of Representatives (11 seats)


 * 1: Andrew Johnson (1808-1875), Democratic
 * 2: Albert G. Watkins (1818-1895), Whig
 * 3: Josiah M. Anderson (1807-1861), Whig
 * 4: John H. Savage (1815-1904), Democratic
 * 5: George W. Jones (1806-1884), Democratic
 * 6: James H. Thomas (1808-1876), Democratic
 * 7: Meredith P. Gentry (1809-1866), Whig
 * 8: Andrew Ewing (1813-1864), Democratic
 * 9: Isham G. Harris (1818-1897), Democratic
 * 10: Frederick P. Stanton (1814-1894), Democratic
 * 11: Christopher H. Williams (1798-1857), Whig

Texas

 * Senate


 * 2: Samuel Houston (1793-1863), Democratic
 * 1: Thomas J. Rusk (1803-1857), Democratic
 * House of Representatives (2 seats)


 * 1: David S. Kaufman (1813-1851), Democratic …died January 31, 1851.
 * 2: Volney E. Howard (1809-188), Democratic

Vermont

 * Senate


 * 1: Samuel S. Phelps (1793-1855), Whig
 * 3: William Upham (1792-1853), Whig
 * House of Representatives (4 seats)


 * 1: William Henry (1788-1861), Whig
 * 2: William Hebard (1800-1875), Whig
 * 3: George P. Marsh (1801-1882), Whig …resigned in 1849.
 * James Meacham (1810-1856), Whig …elected to fill vacancy, seated December 3, 1849.
 * 4: Lucius B. Peck (1802-1866), Democratic

Virginia

 * Senate


 * 1: James M. Mason (1798-1871), Democratic
 * 2: Robert M. T. Hunter (1809-1887), Democratic
 * House of Representatives (15 seats)


 * 1: John S. Millson (1808-1874), Democratic
 * 2: Richard K. Meade (1803-1862), Democratic
 * 3: Thomas H. Averett (1800-1855), Democratic
 * 4: Thomas S. Bocock (1815-1891), Democratic
 * 5: Paulus Powell (180-1874), Democratic
 * 6: James A. Seddon (1815-1880), Democratic
 * 7: Thomas H. Bayly (1810-1856), Democratic
 * 8: Alexander R. Holladay (1811-1877), Democratic
 * 9: Jeremiah Morton (1799-1878), Whig
 * 10: Richard Parker (1810-1893), Democratic
 * 11: James McDowell (1795-1851), Democratic
 * 12: Henry A. Edmundson (1814-1890), Democratic
 * 13: LaFayette McMullen (1805-1880), Democratic
 * 14: James M. H. Beale (1786-1866), Democratic
 * 15: Alexander Newman (1804-1849), Democratic …died September 8, 1849.
 * Thomas S. Haymond (1794-1869), Whig …elected to fill vacancy, seated December 3, 1849.

Wisconsin

 * Senate


 * 1: Henry Dodge (1782-1867), Democratic
 * 3: Isaac P. Walker (1815-1872), Democratic
 * House of Representatives (3 seats)


 * 1: Charles Durkee (1805-1870), Free Soil
 * 2: Orsamus Cole (1819-1903), Whig
 * 3: James D. Doty (1799-1865), Democratic

Delegates

 * Minnesota Territory


 * A/L: Henry H. Sibley (1811-1891), …newly formed territory, seated December 3, 1849.
 * Oregon Territory


 * A/L: Samuel R. Thurston (1816-1851), Democratic …newly formed territory, seated December 3, 1849.

Membership detail by Chamber/Party
The list below is arranged by chamber, then by political party. Members are shown in alphabetical order.

Senate
Senators were elected by the state legislatures every two years, with one-third beginning new six year terms with each Congress.

House of Representatives
Members of the House of Representatives were elected by popular vote, variously to single member districts or at-large.

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