States held the 1854–55 United States House of Representatives elections between August 4, 1854, and November 6, 1855, to elect the 234 members and five non-voting delegates of the United States House of Representatives. The Democratic Party remained the largest party but lost almost half its seats, while Know Nothings and the Anti-Nebraska movement made large gains. The Whig Party largely failed to capitalize on the weakness of its major rival, signaling the collapse of the Second Party System.

Controversy surrounding the Kansas-Nebraska Act and nativist opposition to Catholic immigration dominated the 1854 United States elections. Popular outrage against the Nebraska law produced new political parties in Indiana, Ohio, Michigan, and Wisconsin that included most former Whigs, Free Soilers, and Anti-Nebraska Democrats. As many as one in four Northern Democrats abandoned their party, while Democrats suffered a net loss of 70 seats in the free states. Northern Whigs hoped to benefit from Democratic misfortunes, but were weighed down by their own internal divisions and the rise of the Know Nothing movement in the Northeastern United States. Know Nothings swept Massachusetts and made gains in New York and Pennsylvania, where Whig candidates in some districts formed alliances with local lodges. In Iowa, Illinois, and Vermont, Whigs felt compelled to appeal to Free Soilers to shore up their sagging margins. The willingness of Northern Whigs to cooperate with Free Soilers and abolitionists, combined with the magnitude of Whig losses in the Northeast, led Southern Whigs to defect en masse to the Know Nothings in elections held in 1855.

No party controlled a majority in the lower chamber when the 34th United States Congress met in December 1855, leading to a protracted struggle to organize the House. Different groupings of Whigs, Know Nothings, and Anti–Nebraska men controlled between 105 and 117 seats in the House of Representatives, short of the 118 votes needed to elect a speaker. After two months of deadlock, the rule requiring a majority to elect the speaker was suspended; Massachusetts representative Nathaniel P. Banks was elected by a coalition of free state members on the 133rd ballot. The coalition supporting Banks became the base for the Republican Party, which emerged as the main opposition to the Democrats during the 1856 United States elections.

Results Analysis The elections took place over the span of 15 months, against the backdrop of a political realignment. Party arrangements had changed considerably by the time the House met in December 1855. Contemporaries and later historians advanced differing estimates of the state of parties at the beginning of the 34th Congress. The Tribune Almanac for 1856 counts 79 "National Administration" Democrats, 37 proslavery Whigs and Know Nothings, 117 Anti-Nebraska men, and one vacancy at the start of the new term. The representatives counted as part of the Anti-Nebraska group were elected under a variety of labels, including as Know Nothings, Whigs, and Republicans. Kenneth C. Martis finds 83 Democrats, 51 Know Nothings, and 100 Opposition members in his 1989 study of political parties in the United States Congress. Martis's "Opposition Party" is not a true historical political party, but an invented congressional caucus including representatives elected by several groups. Michael J. Dubin lists the representatives' parties at the time of their election, finding 82 Democrats, 52 Know Nothings, 54 Whigs, one Independent Whig, and 45 members elected by various antislavery parties.

Author (Year) Others Greeley (1856) 79 37 117 1 McPherson (1988) 80 50 105 0 Martis (1989) 83 51 100 0 Dubin (1998) 82 52 100 0

Results by state

+ ↓ 82 1 1 9 13 22 52 54 Democratic IW FS P Rep. Anti-Neb. Know Nothing Whig

State Type Date Totalseats Democratic Whig Know Nothing Anti-Nebraska Seats Change Seats Change Seats Change Seats Change Arkansas Districts August 4, 1854 2 2 0 0 0 Iowa Districts August 7, 1854 2 1 1 0 0 Missouri Districts 7 1 2 6 2 0 0 Vermont Districts September 5, 1854 3 0 3 0 0 California At-large September 6, 1854 2 2 0 0 0 Maine Districts September 11, 1854 6 1 2 0 3 0 5 5 Florida At-large October 2, 1854 1 1 0 0 0 South Carolina Districts October 9–10, 1854 6 6 0 0 0 Indiana Districts October 10, 1854 11 2 8 0 1 0 9 9 Ohio Districts 21 0 12 0 7 0 21 19 Pennsylvania Districts 25 7 10 16 8 1 1 1 1 Illinois Districts November 7, 1854(Election Day) 9 4 1 1 3 0 4 4 Michigan Districts 4 1 3 0 0 3 3 New Jersey Districts 5 1 3 4 3 0 0 New York Districts 33 5 16 24 14 4 4 0 1 Wisconsin Districts 3 1 2 0 0 2 2 Massachusetts Districts November 12, 1854 11 0 1 0 9 11 11 0 1 Delaware At-large November 14, 1854 1 0 1 0 1 1 0 Late elections (after the March 4, 1855 beginning of the term) New Hampshire Districts March 13, 1855 3 0 3 0 3 3 0 Connecticut Districts April 2, 1855 4 0 4 0 4 4 0 Rhode Island Districts April 4, 1855 2 0 2 0 2 2 0 Virginia Districts May 24, 1855 13 12 1 0 1 1 0 North Carolina Districts August 2, 1855 8 5 0 3 3 3 0 Tennessee Districts 10 5 0 5 5 5 0 Alabama Districts August 6, 1855 7 5 1 0 1 2 2 0 Kentucky Districts 10 4 1 0 5 6 6 0 Texas Districts 2 1 1 0 1 1 0 Georgia Districts October 1, 1855 8 6 0 2 2 2 0 Louisiana Districts November 5, 1855 4 3 0 1 1 1 0 Mississippi Districts November 5–6, 1855 5 4 1 0 1 1 0 Maryland Districts November 6, 1855 6 2 2 0 2 4 4 0 Total 234 82 75 55 16 52 52 45 41

Maps

Special elections

33rd Congress

! | Azariah Boody | | Whig | 1852 | | Incumbent resigned October 13, 1853.New member elected January 4, 1854.Whig hold. | nowrap |

! | Henry A. Muhlenberg | | Democratic | 1852 | | Incumbent died January 9, 1854.New member elected February 4, 1854.Democratic hold. | nowrap |

! | Brookins Campbell | | Democratic | 1853 | | Incumbent died December 25, 1853.New member elected March 9, 1854.Whig gain. | nowrap |

! | Zeno Scudder | | Whig | 1850 | | Incumbent resigned March 4, 1854.New member elected April 3, 1854.Whig hold. | nowrap |

! | John F. Snodgrass | | Democratic | 1853 | | Incumbent died June 5, 1854.New member elected August 3, 1854.Democratic hold. | nowrap |

! | Gilbert Dean | | Democratic | 1850 | | Incumbent resigned July 3, 1854.New member elected November 7, 1854.Whig gain. | nowrap |

! | Gerrit Smith | | Free Soil | 1852 | | Incumbent resigned August 7, 1854.New member elected November 7, 1854.Whig gain. | nowrap |

! | Presley Ewing | | Whig | 1851 | | Incumbent died September 27, 1854.New member elected November 13, 1854.Whig hold. | nowrap |

34th Congress

! | Henry Morris | | Know Nothing | 1854 | | Incumbent resigned September 20, 1855.New member elected November 6, 1855.Know Nothing hold. | nowrap |

Alabama

Alabama held elections on August 6, 1855.

! | Philip Phillips | | Democratic | 1853 | | Incumbent retired.Know Nothing gain. | nowrap |

! | James Abercrombie | | Whig | 1851 | | Incumbent retired.Democratic gain. | nowrap |

! | James F. Dowdell | | Democratic | 1853 | Incumbent re-elected. | nowrap |

! | William Russell Smith | | Democratic | 1851 | | Incumbent re-elected to a new party.Know Nothing gain. | nowrap |

! | George S. Houston | | Democratic | 1843 | Incumbent re-elected. | nowrap |

! | Williamson R. W. Cobb | | Democratic | 1847 | Incumbent re-elected. | nowrap |

! | Sampson Willis Harris | | Democratic | 1847 | Incumbent re-elected. | nowrap |

Arkansas

Arkansas held elections on August 4, 1854.

! | Alfred B. Greenwood | | Democratic | 1852 | Incumbent re-elected. | nowrap |

! | Edward A. Warren | | Democratic | 1852 | | Incumbent retired.Democratic hold. | nowrap |

California

California held elections on September 6, 1854.

! rowspan=2 | | Milton S. Latham | | Democratic | 1852 | | Incumbent withdrew.Democratic hold. | rowspan=2 nowrap |

| James A. McDougall | | Democratic | 1852 | | Incumbent lost re-election.Democratic hold.

Connecticut

Connecticut held elections on April 2, 1855.

! | James T. Pratt | | Democratic | 1853 | | Incumbent lost re-election.Know Nothing gain. | nowrap |

! | Colin M. Ingersoll | | Democratic | 1851 | | Incumbent retired.Know Nothing gain. | nowrap |

! | Nathan Belcher | | Democratic | 1853 | | Incumbent lost re-election.Know Nothing gain. | nowrap |

! | Origen S. Seymour | | Democratic | 1851 | | Incumbent retired.Know Nothing gain. | nowrap |

Delaware

Delaware held elections on November 14, 1854.

! | George R. Riddle | | Democratic | 1850 | | Incumbent lost re-election.Know Nothing gain. | nowrap |

Florida

Florida held elections on October 2, 1854.

! | Augustus Maxwell | | Democratic | 1852 | Incumbent re-elected. | nowrap |

Georgia

Georgia held elections on October 1, 1855.

! | James Lindsay Seward | | Democratic | 1853 | Incumbent re-elected. | nowrap |

! | Alfred H. Colquitt | | Democratic | 1853 | | Incumbent retired.Democratic hold. | nowrap |

! | Jack Bailey | | Democratic | 1851 | | Incumbent retired.Know Nothing gain. | nowrap |

! | William B. W. Dent | | Democratic | 1853 | | Incumbent retired.Democratic hold. | nowrap |

! | Elijah W. Chastain | | Democratic | 1851 | | Incumbent retired.Democratic hold. | nowrap |

! | Junius Hillyer | | Democratic | 1851 | | Incumbent retired.Democratic hold. | nowrap |

! | David A. Reese | | Whig | 1853 | | Incumbent retired.Know Nothing gain. | nowrap |

! | Alexander H. Stephens | | Whig | 1853 | | Incumbent re-elected as a Democrat.Democratic gain. | nowrap |

Illinois

Illinois held elections on November 7, 1854.

! | Elihu B. Washburne | | Whig | 1852 | | Incumbent re-elected as a Republican.Republican gain. | nowrap |

! | John Wentworth | | Democratic | 1852 | | Incumbent retired.Republican gain. | nowrap |

! | Jesse O. Norton | | Whig | 1852 | | Incumbent re-elected as a Republican.Republican gain. | nowrap |

! | James Knox | | Whig | 1852 | Incumbent re-elected. | nowrap |

! | William A. Richardson | | Democratic | 1847 | Incumbent re-elected. | nowrap |

! | Richard Yates | | Whig | 1852 | | Incumbent lost re-election.Democratic gain. | nowrap |

! | James C. Allen | | Democratic | 1852 | Incumbent re-elected.Winner subsequently unseated. | nowrap |

! | William Henry Bissell | | IndependentDemocrat | 1848 | | Incumbent retired.Anti-Nebraska Democratic gain. | nowrap |

! | Willis Allen | | Democratic | 1850 | | Incumbent retired.Democratic hold. | nowrap |

Indiana

Indiana held elections on October 10, 1854.

! | Smith Miller | | Democratic | 1852 | Incumbent re-elected. | nowrap |

! | William Hayden English | | Democratic | 1852 | Incumbent re-elected. | nowrap |

! | Cyrus L. Dunham | | Democratic | 1849 | | Incumbent lost re-election.People's gain. | nowrap |

! | Jim Lane | | Democratic | 1852 | | Incumbent retired.People's gain. | nowrap |

! | Samuel W. Parker | | Whig | 1851 | | Incumbent retired.People's gain. | nowrap |

! | Thomas A. Hendricks | | Democratic | 1851 | | Incumbent lost re-election.People's gain. | nowrap |

! | John G. Davis | | Democratic | 1851 | | Incumbent lost re-election.People's gain. | nowrap |

! | Daniel Mace | | Democratic | 1851 | | Incumbent re-elected to a new party.People's gain. | nowrap |

! | Norman Eddy | | Democratic | 1852 | | Incumbent lost re-election.People's gain. | nowrap |

! | Ebenezer M. Chamberlain | | Democratic | 1852 | | Incumbent lost re-election.People's gain. | nowrap |

! | Andrew J. Harlan | | Democratic | 1852 | | Incumbent lost re-election.People's gain. | nowrap |

Iowa

Iowa held elections on August 7, 1854.

! | Bernhart Henn | | Democratic | 1850 | | Incumbent retired.Democratic hold. | nowrap |

! | William Vandever | | Whig | 1852 | | Incumbent retired.Whig hold. | nowrap |

Kentucky

Kentucky held elections on August 6, 1855.

! | Linn Boyd | | Democratic | 1839 | | Incumbent retired.Democratic hold.