Elections to the United States House of Representatives for the 18th Congress were held at various dates in different states between July 1822 and August 1823 during President James Monroe's second term.
Elections to the United States House of Representatives for the 17th Congress were held at various dates in different states between July 1820 and August 1821 as President James Monroe won reelection unopposed.
Elections to the United States House of Representatives for the 16th Congress were held at various dates in different states between April 1818 and August 1819 during President James Monroe's first term. Also, newly admitted Alabama elected its first representatives in September 1819.
Elections to the United States House of Representatives for the 13th Congress were held at various dates in different states between April 1812 and August 1813 as James Madison was re-elected president.
Elections to the United States House of Representatives for the 12th Congress were held at various dates in different states between April 1810 and August 1811 during President James Madison's first term.
Elections to the United States House of Representatives for the 11th Congress were held at various dates in different states between April 1808 and May 1809 as James Madison was elected president.
Elections to the United States House of Representatives for the 10th Congress were held at various dates in each state between April 29, 1806 and August 4, 1807 during Thomas Jefferson's second term with the new Congress meeting on October 26, 1807.
Elections to the United States House of Representatives for the 9th Congress were held at various dates in each state between April 24, 1804 and August 5, 1805. The Congress first met on December 2, 1805. The elections occurred at the same time as President Thomas Jefferson's re-election.
Elections to the United States House of Representatives for the 8th Congress were held at various dates in each state, from April 26, 1802 to December 14, 1803 during Thomas Jefferson's first term in office. It was common in the early years of the United Congress for some states to elect representatives to a Congress after it had already convened. In the case of the 8th Congress, the representatives from New Jersey were only elected after its first meeting on October 17, 1803.
Elections to the United States House of Representatives for the 7th Congress in 1800 and 1801, at the same time as the 1800 presidential election, in which Vice President Thomas Jefferson, a Democratic Republican, defeated incumbent President John Adams, a Federalist.
Elections to the United States House of Representatives for the 6th Congress took place in 1798 and 1799, the earliest in New York in April 1798, and the latest in Tennessee in August 1799, after the official start of the 6th Congress on March 4, 1799, but before the start of the first session of this Congress in Philadelphia on December 2, 1799. It was the last congressional session before the move to the new capital at Washington, D.C..
Elections to the United States House of Representatives for the 5th Congress took place in the various states took place between August 12, 1796, and October 15, 1797. The first session was convened on May 15, 1797, at the proclamation of the new President of the United States, John Adams. Since Kentucky and Tennessee had not yet voted, they were unrepresented until the second session.
Elections to the United States House of Representatives for the 4th Congress were held on various dates in each state between August 25, 1794, and September 5, 1795 (Kentucky). The election was held during President George Washington's second term.
Elections to the United States House of Representatives for the 3rd Congress were held in 1792 and 1793, coinciding with the re-election of George Washington as President. While Washington ran for president as an independent, his followers formed the nation's first organized political party, the Federalist Party, whose members and sympathizers are identified as pro-Administration on this page. In response, followers of Thomas Jefferson and James Madison created the opposition Democratic-Republican Party, who are identified as anti-Administration on this page. The Federalists promoted urbanization, industrialization, mercantilism, centralized government, and a broad interpretation of the United States Constitution. In contrast, Democratic-Republicans supported the ideal of an agrarian republic made up of self-sufficient farmers and small, localized governments with limited power.
Elections to the United States House of Representatives for the 2nd Congress took place in 1790 and 1791, in the middle of President George Washington's first term. While formal political parties still did not exist, coalitions of pro-Washington (pro-Administration) representatives and anti-Administration representatives each gained two seats as a result of the addition of new states to the union.
Vermont's 6th congressional district is an obsolete district.
The United States Senate elections of 1820 and 1821 were elections for the United States Senate that, corresponding with James Monroe's landslide re-election, had the Democratic-Republican Party gain one-to-five seats, assuming almost complete control of the Senate.
This was the first election in Massachusetts after the separation of the former District of Maine as the new State of Maine, taking the old 14th – 20th districts with it.
Virginia elected its members in April 1821, after the term began but before the new Congress convened.
John Condit (Democratic-Republican) of New Jersey's at-large congressional district resigned to become assistant collector of the Port of New York.
