States held the 1848âÂÂ49 United States House of Representatives elections between August 7, 1848 and November 11, 1849. Each state set a date for its elections to the House of Representatives before the first session of the 31st United States Congress convened on December 3, 1849. The new state of Wisconsin elected its first Representatives. Anticipating statehood, as ratified in September 1850, California held Federal elections beforehand, increasing the size of the House to 233 seats.
These elections spanned the 1848 United States presidential election and took place immediately after the U.S. victory over Mexico in the MexicanâÂÂAmerican War. The Whigs lost their House majority as Democrats, whose support had driven the war, won a plurality. Among minor parties, the new Free Soil Party, which opposed slavery in the Western territories, won nine Northern seats, while the American or Know Nothing Party retained one.
Despite winning most of their seats at Whig expense, the Free Soil Party had coalesced in 1848 largely as a result of a Democratic Party split in New York, the most populous state. The new party thus drove an unusual Whig sweep in New York elections, temporarily masking Whig decline.
After a gold discovery in January 1848, California boomed, drawing rapid migration of new residents and creating immediate pressure for statehood. The Compromise of 1850, though largely crafted in the Senate, was also passed by the House, brokering its admission to the Union.
As no party held a majority when Congress convened, the election of a Speaker proved contentious. The Whigs were sectionally split, with Northern Whigs nominating incumbent speaker Robert C. Winthrop of Massachusetts and Southern Whigs supporting Meredith P. Gentry of Tennessee. Democrats primarily supported Howell Cobb of Georgia; 13 other Democratic hopefuls also garnered support. The small Free Soil Party supported David Wilmot of Pennsylvania, author of the Wilmot Proviso, calling attention to slave power's hold over both major parties.
After nearly three weeks of heated debate, the House suspended its majority rule for the Speaker election, enabling Cobb to be elected on the 63rd ballot by plurality.
Wisconsin was apportioned a third seat in 1848, and two more were added for the pending new state of California.
|- ! | John W. Hornbeck | | Whig | 1846 | | Incumbent died January 16, 1848.<br/>New member elected February 23, 1848.<br/>Democratic gain.<br/>Winner was not a candidate for the next term; see below. | nowrap |
|- ! | John Quincy Adams | | Whig | 1830 | | Incumbent died February 23, 1848.<br/>New member elected April 3, 1848.<br/>Whig hold.<br/>Winner later re-elected to the next term; see below. | nowrap |
|- ! | James A. Black | | Democratic | 1843 | | Incumbent died April 3, 1848.<br/>New member elected May 23, 1848.<br/>Democratic hold.<br/>Winner later re-elected to the next term; see below. | nowrap |
|- ! | John Hubbard Tweedy | | Whig | 1846 | | Incumbent resigned May 28, 1848, after Wisconsin became a state.<br>New delegate elected October 30, 1848.<br>Democratic gain.<br>Winner later re-elected in the Minnesota Territory's at-large district; see below. | nowrap |
|- ! | David S. Jackson | | Democratic | 1846 | | Seat declared vacant on April 19, 1848, following an election contest centered on voter fraud.<br/>New member elected November 7, 1848.<br/>Whig gain.<br/>Winner not elected the same day to the next term; see below. | nowrap |
|- ! | John M. Holley | | Whig | 1846 | | Incumbent died March 8, 1848.<br/>New member elected November 7, 1848.<br/>Whig hold.<br/>Winner not elected the same day to the next term; see below. | nowrap |
|- ! | Alexander D. Sims | | Democratic | 1844 | | Incumbent died November 22, 1848.<br/>New member elected January 9, 1849.<br/>Democratic hold.<br/>Winner later re-elected to the next term; see below. | nowrap |
|- ! | Alexander D. Sims | | Democratic | 1844 | | Incumbent had been re-elected, see below, but died November 22, 1848.<br/>New member elected January 16, 1849.<br/>Democratic hold.<br/>Winner had already been elected to finish the current term; see above. | nowrap |
|- ! | George P. Marsh | | Whig | 1843 | | Incumbent resigned May 29, 1849, when appointed U.S. Minister Resident to the Ottoman Empire.<br/>New member elected September 4, 1849.<br/>Whig hold.<br/>Winner later re-elected to the next term. | nowrap |
|- ! | Rodolphus Dickinson | | Democratic | 1846 | | Incumbent died March 20, 1849.<br/>New member elected October 9, 1849.<br/>Democratic hold.<br/>Winner died the following year, leading to another special election. | nowrap |
|- ! | Alexander Newman | | 1849 | | Incumbent died September 8, 1849.<br/>New member elected November 8, 1849.<br/>Whig gain.<br/>Winner later lost re-election to the next term. | nowrap |
Elections were held August 6, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | John Gayle | | Whig | 1847 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Henry W. Hilliard | | Whig | 1845 | Incumbent re-elected. | nowrap |
|- ! | Sampson Willis Harris | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | Samuel Williams Inge | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | George S. Houston | | Democratic | 1841 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Williamson R. W. Cobb | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | Franklin W. Bowdon | | Democratic | 1846 | Incumbent re-elected. | nowrap |
The election was held August 7, 1848.
|- ! | Robert Ward Johnson | | Democratic | 1846 | Incumbent re-elected. | nowrap |
In California two at-large members were elected November 13, 1849 in anticipation of statehood and seated September 11, 1850.
|- ! rowspan=2 | <br/> | colspan=3 | None (new state) | | New seat.<br/>Independent gain. | rowspan=2 nowrap |
|- | colspan=3 | None (new state) | | New seat.<br/>Democratic gain.
Elections were held April 2, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | James Dixon | | Whig | 1845 | | Incumbent retired.<br/>Democratic gain. | nowrap |
|- ! | Samuel D. Hubbard | | Whig | 1845 | | Incumbent lost re-election.<br/>Free Soil gain. | nowrap |
|- ! | John A. Rockwell | | Whig | 1845 | | Incumbent lost re-election.<br/>Democratic gain. | nowrap |
|- ! | Truman Smith | | Whig | 1839<br>1843 <br>1845 | | Incumbent retired to run for U.S. Senate.<br/>Whig hold. | nowrap |
The election was held November 6, 1848.
|- ! | John W. Houston | | Whig | 1844 | Incumbent re-elected. | nowrap |
Florida's single at-large member was elected October 2, 1848.
|- ! | Edward C. Cabell | | Whig | 1845<br>1846 <br>1846 | Incumbent re-elected. | nowrap |
Elections were held October 2, 1848.
|- ! | T. Butler King | | Whig | 1838<br>1842 <br>1844 | Incumbent re-elected. | nowrap |
|- ! | Alfred Iverson Sr. | | Democratic | 1846 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | John William Jones | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Hugh A. Haralson | | Democratic | 1842 | Incumbent re-elected. | nowrap |
|- ! | John H. Lumpkin | | Democratic | 1842 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Howell Cobb | | Democratic | 1842 | Incumbent re-elected. | nowrap |
|- ! | Alexander H. Stephens | | Whig | 1843 | Incumbent re-elected. | nowrap |
|- ! | Robert Toombs | | Whig | 1844 | Incumbent re-elected. | nowrap |
Elections were held August 7, 1848.
|- ! | Robert Smith | | Independent<br>Democratic | 1842 | | Incumbent retired.<br>Democratic gain. | nowrap |
|- ! | John Alexander McClernand | | Democratic | 1842 | Incumbent re-elected. | nowrap |
|- ! | Orlando B. Ficklin | | Democratic | 1842 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | John Wentworth | | Democratic | 1842 | Incumbent re-elected. | nowrap |
|- ! | William Alexander Richardson | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | Thomas J. Turner | | Democratic | 1846 | | Incumbent retired.<br>Whig gain. | nowrap |
|- ! | Abraham Lincoln | | Whig | 1846 | | Incumbent retired.<br>Democratic gain. | nowrap |
Elections were held August 10, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | Elisha Embree | | Whig | 1847 | | Incumbent lost re-election.<br>Democratic gain. | nowrap |
|- ! | Thomas J. Henley | | Democratic | 1843 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | John L. Robinson | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | Caleb B. Smith | | Whig | 1843 | | Incumbent retired.<br>Free Soil gain. | nowrap |
|- ! | William W. Wick | | Democratic | 1839<br>1841 <br>1845 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | George G. Dunn | | Whig | 1847 | | Incumbent retired.<br>Democratic gain. | nowrap |
|- ! | Richard W. Thompson | | Whig | 1841<br>1843 <br>1847 | | Incumbent renominated but withdrew.<br>Whig hold. | nowrap |
|- ! | John Pettit | | Democratic | 1843 | | Incumbent lost renomination.<br>Democratic hold. | nowrap |
|- ! | Charles W. Cathcart | | Democratic | 1845 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | William R. Rockhill | | Democratic | 1847 | | Incumbent retired.<br>Democratic hold. | nowrap |
Elections were held August 7, 1848.
|- ! | William Thompson | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | Shepherd Leffler | | Democratic | 1846 | Incumbent re-elected. | nowrap |
Elections were held August 6, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | Linn Boyd | | Democratic | 1835<br>1837 <br>1839 | Incumbent re-elected. | nowrap |
|- ! | Samuel Peyton | | Democratic | 1847 | | Incumbent retired.<br>Whig gain. | nowarap |
|- ! | Beverly L. Clarke | | Democratic | 1847 | | Incumbent retired.<br>Whig gain. | nowarap |
|- ! | Aylette Buckner | | Whig | 1847 | | Incumbent lost re-election.<br>Democratic gain. | nowrap |
|- ! | John Burton Thompson | | Whig | 1840<br>1843 <br>1847 | Incumbent re-elected. | nowrap |
|- ! | Green Adams | | Whig | 1847 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Garnett Duncan | | Whig | 1847 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Charles S. Morehead | | Whig | 1847 | Incumbent re-elected. | nowrap |
|- ! | Richard French | | Democratic | 1835<br>1837 <br>1843<br>1845 <br>1847 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | John P. Gaines | | Whig | 1847 | | Incumbent lost re-election.<br>Democratic gain. | nowrap |
Elections were held November 5, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | Emile La Sére | | Democratic | 1846 | Incumbent re-elected. | nowrap |
|- ! | Bannon G. Thibodeaux | | Whig | 1844 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | John H. Harmanson | | Democratic | 1845 | Incumbent re-elected. | nowrap |
|- ! | Isaac E. Morse | | Democratic | 1844 | Incumbent re-elected. | nowrap |
Elections were held September 11, 1848.
|- ! | David Hammons | | Democratic | 1846 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Asa Clapp | | Democratic | 1847 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Hiram Belcher | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Franklin Clark | | Democratic | 1847 | | Incumbent lost re-election.<br>Whig gain. | nowrap |
|- ! | Ephraim K. Smart | | Democratic | 1847 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | James S. Wiley | | Democratic | 1847 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Hezekiah Williams | | Democratic | 1844 | | Incumbent retired.<br>Democratic hold. | nowrap |
Elections were held October 3, 1849 elections were after the March 4, 1849 beginning of the new term, but still before the Congress convened in December 1849.
|- ! | John G. Chapman | | Whig | 1845 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | James Dixon Roman | | Whig | 1847 | | Incumbent retired.<br>Democratic gain. | nowrap |
|- ! | Thomas Watkins Ligon | | Democratic | 1845 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Robert Milligan McLane | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | Alexander Evans | | Whig | 1847 | Incumbent re-elected. | nowrap |
|- ! | John W. Crisfield | | Whig | 1847 | | Incumbent retired.<br>Whig hold. | nowrap |
Elections were held November 13, 1848.
|- ! | Robert C. Winthrop | | Whig | 1840<br>1842 <br>1842 | Incumbent re-elected. | nowrap |
|- ! | Daniel P. King | | Whig | 1843 | Incumbent re-elected. | nowrap | Second ballot <br />
|- ! | Amos Abbott | | Whig | 1844 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | John G. Palfrey | | Whig | 1846 | | Incumbent lost re-election as Free Soil candidate.<br/>No member elected due to failure to achieve majority vote.<br/>Whig loss. | nowrap |
|- ! | Charles Hudson | | Whig | 1841 | | Incumbent lost re-election.<br>Free Soil gain. | nowrap | Second ballot <br />
|- ! | George Ashmun | | Whig | 1844 | Incumbent re-elected. | nowrap |
|- ! | Julius Rockwell | | Whig | 1844 | Incumbent re-elected. | nowrap |
|- ! | Horace Mann | | Whig | 1848 | Incumbent re-elected. | nowrap |
|- ! | Artemas Hale | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap | Second ballot <br />
|- ! | Joseph Grinnell | | Whig | 1843 | Incumbent re-elected. | nowrap |
Elections were held November 7, 1848.
|- ! | Robert McClelland | | 1843 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Charles E. Stuart | | 1847 | | Incumbent lost re-election.<br>Whig gain. | nowrap |
|- ! | Kinsley S. Bingham | | 1846 | Incumbent re-elected. | nowrap |
See Non-voting delegates, below.
Elections were held November 5âÂÂ6, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | Jacob Thompson | | Democratic | 1839 | Incumbent re-elected. | nowrap |
|- ! | Winfield S. Featherston | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | Patrick W. Tompkins | | Whig | 1847 | | Incumbent retired.<br/>Democratic gain. | nowrap |
|- ! | Albert G. Brown | | Democratic | 1847 | Incumbent re-elected. | nowrap |
Elections were held August 7, 1848.
|- ! | James B. Bowlin | | Democratic | 1842 | Incumbent re-elected. | nowrap |
|- ! | John Jameson | | Democratic | 1839<br>1840 <br>1842<br>1844 <br>1846 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | James S. Green | | Democratic | 1846 | Incumbent re-elected. | nowrap |
|- ! | Willard P. Hall | | Democratic | 1846 | Incumbent re-elected. | nowrap |
|- ! | John S. Phelps | | Democratic | 1844 | Incumbent re-elected. | nowrap |
Elections were held March 13, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | Amos Tuck | | Independent | 1847 | | Incumbent re-elected as a Free Soiler.<br>Free Soil gain. | nowrap |
|- ! | Charles H. Peaslee | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | James Wilson II | | Whig | 1847 | Incumbent re-elected. | nowrap |
|- ! | James Hutchins Johnson | | Democratic | 1845 | | Incumbent retired.<br>Democratic hold. | nowrap |
Elections were held November 7, 1848.
|- ! | James G. Hampton | | Whig | 1844 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | William A. Newell | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Joseph E. Edsall | | Democratic | 1844 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | John Van Dyke | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Dudley S. Gregory | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
Elections were held November 7, 1848.
|- ! | Frederick William Lord | | Democratic | 1846 | | Incumbent retired.<br>Whig gain. | nowrap |
|- ! | Henry C. Murphy | | Democratic | 1842<br>1844 <br>1846 | | Incumbent retired.<br>Whig gain. | nowrap |
|- ! | Henry Nicoll | | Democratic | 1846 | | Incumbent retired.<br>Whig gain. | nowrap |
|- ! | William B. Maclay | | Democratic | 1842 | | Incumbent lost re-election.<br>Whig gain. | nowrap |
|- ! | Frederick A. Tallmadge | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | colspan=3 | Vacant | | Rep. David S. Jackson (D) was vacated from his<br>seat on April 19, 1848, after an election contest.<br>Whig gain.<br>Winner was not elected the same day to finish<br>the current term; see above. | nowrap |
|- ! | William Nelson | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Cornelius Warren | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Daniel B. St. John | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Eliakim Sherrill | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Peter H. Silvester | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Gideon Reynolds | | Whig | 1846 | Incumbent re-elected as an Anti-Rent Whig. | nowrap |
|- ! | John I. Slingerland | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Orlando Kellogg | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Sidney Lawrence | | Democratic | 1846 | | Incumbent lost re-election as Free Soil candidate.<br>Whig gain. | nowrap |
|- ! | Hugh White | | Whig | 1844 | Incumbent re-elected. | nowrap |
|- ! | George Petrie | | Independent<br>Democratic | 1846 | | Incumbent retired.<br>Whig gain. | nowrap |
|- ! | William Collins | | Democratic | 1846 | | Incumbent retired.<br>Free Soil gain. | nowrap |
|- ! | Joseph Mullin | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Timothy Jenkins | | Democratic | 1844 | | Incumbent retired.<br>Whig gain. | nowrap |
|- ! | George Anson Starkweather | | Democratic | 1846 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Ausburn Birdsall | | Democratic | 1846 | | Incumbent retired.<br>Whig gain. | nowrap |
|- ! | William Duer | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Daniel Gott | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Harmon S. Conger | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | William T. Lawrence | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | colspan=3 | Vacant | | Rep. John M. Holley (W) died March 8, 1848.<br>Whig hold.<br>Winner was not elected the same day to finish<br>the current term; see above. | nowrap |
|- ! | Elias B. Holmes | | Whig | 1844 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Robert L. Rose | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | David Rumsey | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Dudley Marvin | | Whig | 1822<br>1828 <br>1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Nathan K. Hall | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Harvey Putnam | | Whig | 1838<br>1838 <br>1846 | Incumbent re-elected. | nowrap |
|- ! | Washington Hunt | | Whig | 1842 | | Incumbent retired.<br>Whig hold. | nowrap |
Elections were held August 7, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | Thomas L. Clingman | | Whig | 1843<br>1845 <br>1847 | Incumbent re-elected. | nowrap |
|- ! | Nathaniel Boyden | | Whig | 1847 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Daniel Moreau Barringer | | Whig | 1843 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Augustine Henry Shepperd | | Whig | 1827<br>1839 <br>1841<br>1843 <br>1847 | Incumbent re-elected. | nowrap |
|- ! | Abraham Watkins Venable | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | John R. J. Daniel | | Democratic | 1841 | Incumbent re-elected. | nowrap |
|- ! | James Iver McKay | | Democratic | 1831 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Richard Spaight Donnell | | Whig | 1847 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | David Outlaw | | Whig | 1847 | Incumbent re-elected. | nowrap |
Elections were held October 10, 1848.
|- ! | James J. Faran | | Democratic | 1844 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | David Fisher | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Robert C. Schenck | | Whig | 1843 | Incumbent re-elected. | nowrap |
|- ! | Richard S. Canby | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | William Sawyer | | Democratic | 1844 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Rodolphus Dickinson | | Democratic | 1846 | Incumbent re-elected.<br>Incumbent then died March 20, 1849, leading to a<br>special election; see above. | nowrap |
|- ! | Jonathan D. Morris | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | John L. Taylor | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Thomas O. Edwards | | Whig | 1846 | | Incumbent lost re-election.<br>Democratic gain. | nowrap |
|- ! | Daniel Duncan | | Whig | 1846 | | Incumbent lost re-election.<br>Democratic gain. | nowrap |
|- ! | John K. Miller | | Democratic | 1846 | Incumbent re-elected. | nowrap |
|- ! | Samuel F. Vinton | | Whig | 1822<br>1836 <br>1843 | Incumbent re-elected. | nowrap |
|- ! | Thomas Ritchey | | Democratic | 1846 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Nathan Evans | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | William Kennon Jr. | | Democratic | 1846 | | Incumbent lost re-election.<br>Whig gain. | nowrap |
|- ! | John D. Cummins | | Democratic | 1844 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | George Fries | | Democratic | 1844 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Samuel Lahm | | Democratic | 1846 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | John Crowell | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Joshua Reed Giddings | | Whig | 1838<br>1842 <br>1842 | | Incumbent re-elected as a Free Soiler.<br>Free Soil gain. | nowrap |
|- ! | Joseph M. Root | | Whig | 1844 | | Incumbent re-elected as a Free Soiler.<br>Free Soil gain. | nowrap |
See Non-voting delegates, below.
Elections were held October 10, 1848.
|- ! | Lewis Charles Levin | | Know Nothing | 1844 | Incumbent re-elected. | nowrap |
|- ! | Joseph Reed Ingersoll | | Whig | 1834<br>1836 <br>1841 | | Incumbent declined to accept renomination.<br>Whig hold. | nowrap |
|- ! | Charles Brown | | Democratic | 1840<br>1842 <br>1846 | | Incumbent retired.<br>Whig gain. | nowrap |
|- ! | Charles Jared Ingersoll | | Democratic | 1812<br>1814 <br>1840 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | John Freedley | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Samuel A. Bridges | | Democratic | 1848 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Abraham Robinson McIlvaine | | Whig | 1843 | | Incumbent lost renomination.<br>Whig hold. | nowrap |
|- ! | John Strohm | | Whig | 1844 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | William Strong | | Democratic | 1846 | Incumbent re-elected. | nowrap |
|- ! | Richard Brodhead | | Democratic | 1843 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Chester P. Butler | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | David Wilmot | | Democratic | 1844 | Incumbent re-elected. | nowrap |
|- ! | James Pollock | | Whig | 1844 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | George Nicholas Eckert | | Whig | 1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Henry Nes | | Whig | 1843<br>1844 <br>1846 | Incumbent re-elected. | nowrap |
|- ! | Jasper Ewing Brady | | Whig | 1846 | | Incumbent lost re-election.<br>Democratic gain. | nowrap |
|- ! | John Blanchard | | Whig | 1844 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Andrew Stewart | | Whig | 1820<br>1828 <br>1830<br>1834 <br>1843 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Job Mann | | Democratic | 1834<br>1836 <br>1846 | Incumbent re-elected. | nowrap |
|- ! | John Dickey | | Whig | 1843<br>1844 <br>1846 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Moses Hampton | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | John W. Farrelly | | Whig | 1846 | | Incumbent retired.<br>Free Soil gain. | nowrap |
|- ! | James Thompson | | Democratic | 1844 | Incumbent re-elected. | nowrap |
|- ! | Alexander Irvin | | Whig | 1846 | | Incumbent retired.<br>Democratic gain. | nowrap |
Elections were held April 4, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | Robert B. Cranston | | Whig | 1837<br>1843 <br>1847 | | Incumbent retired.<br>Whig hold. | nowrap |
|- ! | Benjamin B. Thurston | | Democratic | 1847 | | Incumbent lost re-election.<br>Whig gain. | nowrap | Second ballot
Elections were held October 9âÂÂ10, 1848.
|- ! | Daniel Wallace | | Democratic | 1848 | Incumbent re-elected. | nowrap |
|- ! | Richard F. Simpson | | Democratic | 1843 | | Incumbent retired.<br>Democratic hold. | nowrap |
|- ! | Joseph A. Woodward | | Democratic | 1843 | Incumbent re-elected. | nowrap |
|- ! | Alexander D. Sims | | Democratic | 1844 | Incumbent re-elected.<br/>Incumbent then died November 22, 1848,<br>leading to two special elections; see above. | nowrap |
|- ! | Armistead Burt | | Democratic | 1843 | Incumbent re-elected. | nowrap |
|- ! | Isaac E. Holmes | | Democratic | 1838 | Incumbent re-elected. | nowrap |
|- ! | Robert Barnwell Rhett | | Democratic | 1836 | | Incumbent retired.<br>Democratic hold. | nowrap |
Elections were held August 2, 1849.
|- ! | Andrew Johnson | | Democratic | 1842 | Incumbent re-elected. | nowrap |
|- ! | William M. Cocke | | Whig | 1845 | |Incumbent lost re-election as a Democrat.<br/>Whig hold. | nowrap |
|- ! | John H. Crozier | | Whig | 1845 | |Incumbent retired.<br/>Whig hold. | nowrap |
|- ! | Hugh L.W. Hill | | Democratic | 1847 | |Incumbent retired.<br/>Democratic hold. | nowrap |
|- ! | George W. Jones | | Democratic | 1842 | Incumbent re-elected. | nowrap |
|- ! | James H. Thomas | | Democratic | 1847 | Incumbent re-elected. | nowrap |
|- ! | Meredith P. Gentry | | Whig | 1839<br>1842 <br>1845 | Incumbent re-elected. | nowrap |
|- ! | Washington Barrow | | Whig | 1847 | |Incumbent retired.<br/>Democratic gain. | nowrap |
|- ! | Lucien B. Chase | | Democratic | 1845 | |Incumbent retired.<br/>Democratic hold. | nowrap |
|- ! | Frederick P. Stanton | | Democratic | 1845 | Incumbent re-elected. | nowrap |
|- ! | William T. Haskell | | Whig | 1847 | |Incumbent retired.<br/>Whig hold. | nowrap |
Elections were held August 6, 1849.
|- ! | David S. Kaufman | | Democratic | 1846 | Incumbent re-elected. | nowrap |
|- ! | Timothy Pilsbury | | Democratic | 1846 | | Incumbent lost re-election.<br>Democratic hold. | nowrap |
Elections were held September 5, 1848.
|- ! | William Henry | | Whig | 1846 | Incumbent re-elected. | nowrap |
|- ! | Jacob Collamer | | Whig | 1843 | | Incumbent retired.<br/>Whig hold. | nowrap | Second ballot
|- ! | George P. Marsh | | Whig | 1843 | Incumbent re-elected.<br>Incumbent then resigned May 29, 1849,<br>leading to a special election; see above. | nowrap | Second ballot
|- ! | Lucius B. Peck | | 1846 | Incumbent re-elected. | nowrap |
Second ballot
Elections were held April 26, 1849, after the March 4, 1849 beginning of the term, but before the House first convened in December 1849.
|- ! | Archibald Atkinson | | 1843 | | Incumbent retired.<br/>Democratic hold. | nowrap |
|- ! | Richard Kidder Meade | | 1847 | Incumbent re-elected. | nowrap |
|- ! | Thomas Flournoy | | Whig | 1847 | | Incumbent lost re-election.<br/>Democratic gain. | nowrap |
|- ! | Thomas S. Bocock | | 1847 | Incumbent re-elected. | nowrap |
|- ! | William L. Goggin | | Whig | 1839<br/>1843 <small>(lost)</small><br/>1844 <small>(special)</small><br/>1845 <small>(retired)</small><br/>1847 | | Incumbent lost re-election.<br/>Democratic gain. | nowrap |
|- ! | John Botts | | Whig | 1839<br/>1843 <small>(lost)</small><br/>1847 | | Incumbent lost re-election.<br/>Democratic gain. | nowrap |
|- ! | Thomas H. Bayly | | 1844 <small>(special)</small> | Incumbent re-elected. | nowrap |
|- ! | Richard L. T. Beale | | 1847 | | Incumbent retired.<br/>Democratic hold. | nowrap |
|- ! | John Pendleton | | Whig | 1845 | | Incumbent lost re-election.<br/>Independent Whig gain. | nowrap |
|- ! | Henry Bedinger | | 1845 | | Incumbent lost renomination.<br/>Democratic hold. | nowrap |
|- ! | James McDowell | | 1846 <small>(special)</small> | Incumbent re-elected. | nowrap |
|- ! | William B. Preston | | Whig | 1847 | | Incumbent retired.<br/>Democratic gain. | nowrap |
|- ! | Andrew S. Fulton | | Whig | 1847 | | Incumbent retired.<br/>Democratic gain. | nowrap |
|- ! | Robert A. Thompson | | 1847 | | Incumbent retired.<br/>Democratic hold. | nowrap |
|- ! | William G. Brown Sr. | | 1845 | | Incumbent lost renomination.<br/>Democratic hold.<br>Winner then died September 8, 1849,<br>leading to a special election; see above. | nowrap |
Wisconsin members were first elected in advance of its June 1848 statehood. It elected two members to finish the current term in the 30th Congress, and then it gained an elected an additional member for elections to the 31st Congress.
Wisconsin's two members were elected May 8, 1848.
|- ! | colspan=3 | None (new state) | | New seat.<br/>Democratic gain. | nowrap |
|- ! | colspan=3 | None (new state) | | New seat.<br/>Democratic gain. | nowrap |
Wisconsin's three members were elected November 7, 1848.
|- ! | William Pitt Lynde | | Democratic | 1848 | | Incumbent lost re-election.<br/>Free Soil gain. | nowrap |
|- ! | Mason C. Darling | | Democratic | 1848 | | Incumbent retired.<br/>Whig gain. | nowrap |
|- ! | colspan=3 | None (new district) | | New seat.<br/>Democratic gain. | nowrap |
Going into these elections, there were no incumbent delegates, because the only territory â Wisconsin Territory â became a state in 1848. Two new territories â Minnesota Territory and Oregon Territory â were granted delegates in 1849.
|- ! | colspan=3 | None (new district) | | New seat.<br/>New delegate elected August 1, 1849.<br/>Democratic gain. | nowrap |
|- ! | colspan=3 | None (new district) | | New seat.<br/>New delegate elected in 1849.<br/>Democratic gain. | nowrap |