The 15th 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 the Old Brick Capitol in Washington, D.C. from March 4, 1817, to March 4, 1819, during the first two years of James Monroe's presidency. The apportionment of seats in the House of Representatives was based on the 1810 United States census. Both chambers had a Democratic-Republican majority.
The 16th 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, 1819, to March 4, 1821, during the third and fourth years of James Monroe's presidency. The apportionment of seats in the House of Representatives was based on the 1810 United States census. Both chambers had a Democratic-Republican majority.
The 1818–19 United States House of Representatives elections were held on various dates in various states between April 26, 1818 and August 12, 1819. Each state set its own date for its elections to the House of Representatives before the first session of the 16th United States Congress convened on December 6, 1819. They occurred during President James Monroe's first term. Also, newly admitted Alabama elected its first representatives in September 1819, increasing the size of the House to 186 seats.
The 1818–19 United States Senate elections were held on various dates in various states. As these U.S. Senate elections were prior to the ratification of the Seventeenth Amendment in 1913, senators were chosen by state legislatures. Senators were elected over a wide range of time throughout 1818 and 1819, and a seat may have been filled months late or remained vacant due to legislative deadlock. In these elections, terms were up for the senators in Class 3.
Pennsylvania elected its members October 13, 1818.
Massachusetts elected its members November 2, 1818. Massachusetts's electoral law required a majority for election, necessitating additional elections in five districts on April 5, 1819, and July 26, 1819.
Vermont elected its members On September 1, 1818.
In 1818, Uriel Holmes (F) of Connecticut's at-large district resigned from the House. A special election was held to fill the resulting vacancy.
Georgia elected its members October 5, 1818.
During the 15th Congress, there were two special elections in the 6th district of Pennsylvania, both held in the year 1818. The 6th district at that time was a plural district with two seats, both of which became vacant at different times in 1818. The first vacancy was caused by John Ross (DR) resigning on February 24, 1818 and the second was caused by Samuel D. Ingham (DR) resigning July 6.
On April 20, 1818, Jacob Spangler (DR) resigned from Congress, where he'd represented Pennsylvania's 4th district. A special election was held that year to fill the resulting vacancy.
On January 1, 1818, a special election was held in North Carolina's 7th district to fill a vacancy left by the death of Representative-elect Alexander McMillan (F) before the 15th Congress had assembled.
On November 7, 1818, a special election was held in North Carolina's 11th district to fill a vacancy caused by Daniel M. Forney (DR)'s resignation earlier that year.
On February 21, 1818, Representative Peterson Goodwyn (DR) of Virginia's 19th district died in office. A special election was held to fill the resulting vacancy.
Illinois elected its member August 2, 1819, after the new congress began but before the first session convened. The incumbent had just been elected to the new seat in late 1818.
On April 20, 1818, Thomas B. Robertson (DR) of Louisiana's at-large district resigned. A special election was held to fill the resulting vacancy.
On November 3, 1817, John C. Calhoun (DR) of South Carolina's 6th district resigned upon being appointed Secretary of War. A special election was held for his replacement
Illinois elected its new member sometime in 1818, after gaining statehood.
A special election was held in Massachusetts's 20th congressional district on March 16, 1818 to fill a vacancy left by the resignation of Albion K. Parris (DR) on February 3, 1818 after being named a judge of the United States District Court for the District of Maine.
Virginia elected its members in April 1819, after the new congress began but before the first session convened.