20th United States Congress

Columns: State ( class ) | Vacator | Reason for change | Successor | Date of successor 's formal installation
Massachusetts ( 1 ) | Vacant | Seat remained vacant because legislature had failed to elect . Winner was elected June 8 , 1827 | Daniel Webster ( A ) | Installed December 17 , 1827 | Ohio ( 3 ) | William Henry Harrison ( A ) | Resigned May 20 , 1828 , to become U.S. Minister Plenipotentiary to Gran Columbia . A special election was held December 10 , 1828 | Jacob Burnet ( A ) | Installed December 10 , 1828 | Maine ( 1 ) | Albion K. Parris ( J ) | Resigned August 26 , 1828 , after being appointed to the Maine Supreme Judicial Court . A special election was held January 15 , 1829 | John Holmes ( A ) | Installed January 15 , 1829 | Georgia ( 2 ) | Thomas W. Cobb ( J ) | Resigned before November 7 , 1828 . A special election was held November 7 , 1828 | Oliver H. Prince ( J ) | Installed November 7 , 1828 | North Carolina ( 3 ) | Nathaniel Macon ( J ) | Resigned November 14 , 1828 . A special election was held December 15 , 1828 | James Iredell Jr. ( J ) | Installed December 15 , 1828 | New York ( 1 ) | Martin Van Buren ( J ) | Resigned December 20 , 1828 , to become Governor of New York . A special election was held January 15 , 1829 | Charles E. Dudley ( J ) | Installed January 15 , 1829 | New Jersey ( 1 ) | Ephraim Bateman ( A ) | Resigned January 12 , 1829 , due to failing health . A special election was held January 30 , 1829 | Mahlon Dickerson ( J ) | Installed January 30 , 1829 | New Jersey ( 2 ) | Mahlon Dickerson ( J ) | Resigned January 30 , 1829 , after being elected to New Jersey 's Class 1 U.S. Senate seat | Vacant | Not filled in this Congress

Example questions:
Of the three successors in the 20th United States Congress whose first names start with J , which was involved with the Treaty of Ghent ? | Which New Jersey vacator of the 20th United States Congress served as Secretary of the Navy ? | In what year did the politician and journalist installed in the 20th United States Congress in 1828 die ? | Of the two politicians in the 20th United States Congress Installed January 15 , 1829 , what was the birth year of the younger ?

Answers:
John Holmes | Mahlon Dickerson | 1837 | 1780