were poorly received. The Republicans won in a landslide, capturing enough seats to override Johnson's vetoes. Only the border states of Delaware, Maryland, and Kentucky voted for Democrats. Recently Reconstructed Tennessee sent a Republican delegation. The other 10 ex-Confederate states did not vote. As a percentage of the total number of seats available in the House of Representatives, the Republican majority attained in the election of 1866 has never been exceeded in any subsequent Congress. The Democratic Party was able to achieve similar success only in the political environment of the era of the Great Depression in the 1930s. Election summaries Seven secessionist states were readmitted during this Congress, filling 32 vacancies, but are not included in this table if they were not elected within 1866 through 1867. The party affiliations of the 4 Representatives elected in Texas's rejected elections are unknown. Special elections 39th Congress |- ! | Lovell Rousseau | | Unconditional Unionist | 1865 | | Incumbent resigned July 21, 1866 following his assault of Josiah Grinnell.Incumbent re-elected September 15, 1866.Unconditional Unionist hold. | nowrap | |- ! | Green C. Smith | | Unconditional Unionist | 1861 | | Incumbent resigned July 13, 1866 to become Governor of Montana Territory.New member elected September 15, 1866.Democratic gain. | nowrap | |- ! | Henry Grider | | 1861 | | Incumbent died September 7, 1866.New member elected October 6, 1866.Democratic hold. | nowrap | |- ! | James Humphrey | | 1864 | | Incumbent died June 16, 1866.New member elected November 6, 1866.Democratic gain. | nowrap | |} 40th Congress |- ! | Elijah Hise | | 1866 | | Incumbent died May 6, 1867.New member elected August 5, 1867.Democratic hold. | nowrap | |- ! | Rutherford B. Hayes | | 1864 | | Incumbent resigned July 20, 1867 to run for Governor of Ohio.New member elected October 8, 1867.Independent Republican gain. | nowrap | |- ! | Charles Denison | | 1862 | | Incumbent died June 27, 1867.New member elected October 8, 1867.Democratic hold. | nowrap | |- ! | Thomas E. Noell | | 1864 | | Incumbent died October 3, 1867.New member elected November 5, 1867.Democratic hold. | nowrap | |- ! | Roscoe Conkling | | 1864 | | Incumbent resigned March 3, 1867 when elected U.S. senator.New member elected November 5, 1867.Republican hold. | nowrap | |} California |-