History of the House of Representatives Timeline

For most of the first half of the 19th century, a balance between the free North and the slaveholding South existed in the Senate, as the numbers of free and slave states were equal, shaping sectional politics in the era leading up to the Civil War.

Image source: History of the United States Congress

The early 19th century was marked by the assertion of Congress' gradual independence from the Presidency, starting from the presidency of James Madison and onward, as the legislative branch developed its own institutional identity and power.

In 1825, new Speaker of the House Henry Clay officially announced that he and his followers would separate from Andrew Jackson and form the National Republican Party, reshaping American partisan alignments.

Clay lost to Jackson in the 1832 presidential election and subsequently moved to the Senate, ending his tenure as Speaker of the House and marking a transition in his long political career.

Image source: Henry Clay

The Democrats were a weak minority in the House from 1861 to 1874, a period dominated by the Republican Party during the Civil War and early Reconstruction eras.

Image source: History of the Democratic Party (United States)

Stevens was one of the major policymakers regarding Reconstruction, and obtained a House vote of impeachment against President Andrew Johnson, who was acquitted by the Senate in 1868. Stevens dominated the House with his wit, knowledge of parliamentary law, and sheer willpower, even though he was often unable to prevail.

Image source: Thaddeus Stevens

The Democrats made a major comeback in 1874 by winning 93 seats held by the GOP and becoming the majority party in the House of Representatives.

Image source: 1874–75 United States House of Representatives elections

Between 1860 and 1920 the average tenure of House members doubled from four to eight years, reflecting growing careerism and institutional stability within Congress.

The increasing importance of the federal government, an increasing acceptance of lengthy congressional service, and (after 1896) a decline in the partisan competitiveness of congressional districts all contributed to the growing length of the average term of House members.

Historiographical views of Stevens have dramatically shifted over the years, from the early 20th-century view of Stevens and the Radical Republicans as tools of big business motivated by hatred of the white South, to the perspective of the neoabolitionists of the 1950s and afterwards, who applauded their efforts to give equal rights to the freed slaves.

The early 20th century witnessed the rise of party leadership in both houses of Congress, formalizing the roles of Speakers, majority leaders, and minority leaders as central figures in legislative operations.

Image source: Party leaders of the United States House of Representatives

In 1911, Congress passed the Apportionment Act of 1911, also known as 'Public Law 62-5', which capped the size of the United States House of Representatives at 435 seats, a limit that persists today.

Image source: Apportionment Act of 1911

On November 7, 1916, Jeannette Rankin was elected to Montana's at-large seat in the House of Representatives, becoming the first female member of Congress, four years before women gained the right to vote nationwide.

Image source: Jeannette Rankin

After the beginning of the Great Depression and the New Deal, the Democrats controlled the House from 1931 to 1994, with two exceptions (1946 and 1952), as the New Deal Coalition proved remarkably successful and durable.

Image source: New Deal coalition

In terms of legislation, the Conservative coalition usually blocked liberal legislative proposals, except in 1964–65 when President Lyndon Johnson had the majorities needed to pass his Great Society proposals.

Image source: Conservative coalition

In 1973, Speaker of the House Carl Albert appointed Felda Looper as the first female page in the House of Representatives, opening the page program to women for the first time.

Population had more than tripled since the 1911 expansion of the House to its current 435 seats; accordingly, proposals began to be made by commentators such as George F. Will. One such proposal, the Wyoming Rule, calls for adding enough members to reduce the population of the average Congressional district to that of the least populous state's smallest district; in 1990, this would have resulted in a total House size of 547.

The Republicans under Newt Gingrich returned to a majority in the election of 1994, as part of the Republican Revolution that gave the party both houses of Congress and a majority of governorships that year, ending decades of Democratic House control.

The Democrats gained 30 seats in the 2006 elections, regaining control of the House and electing Nancy Pelosi as the first female Speaker of the House of Representatives.

Image source: Nancy Pelosi

They strengthened their control during the 2008 elections, gaining an additional 21 seats alongside Barack Obama's presidential victory, giving Democrats a commanding majority in the House.

Image source: 2008 United States House of Representatives elections

However, the Republicans soon erased those gains after gaining 63 seats in the 2010 elections, the largest seat change for any election since 1948, returning the GOP to power in the House.

Image source: 2010 United States House of Representatives elections

Republican control of the House remained until the 2018 elections, spanning the Trump administration years before Democrats regained the chamber majority in the 2018 midterm elections.

Image source: Party divisions of United States Congresses