The 2018 United States House of Representatives elections were held on November 6, 2018, as part of the 2018 midterm elections during President Donald Trump's term, with early voting taking place in some states in the weeks preceding that date. Voters chose representatives from all 435 congressional districts across each of the 50 U.S. states to serve in the 116th United States Congress. Non-voting delegates from the District of Columbia and four of the five inhabited U.S. territories^{[lower-alpha 6]} were also elected. On Election Day, Republicans had held a House majority since January 2011.^[4]

Quick Facts All 435 seats in the United States House of Representatives 218 seats needed for a majority, Turnout ...

2018 United States House of Representatives elections

← 2016 November 6, 2018 2020 →
All 435 seats in the United States House of Representatives[lower-alpha 1] 218 seats needed for a majority
Turnout	50.3%[1] 4.4 pp
Majority party Minority party   Leader Nancy Pelosi Paul Ryan (retired) Party Democratic Republican Leader since January 3, 2003 October 29, 2015 Leader's seat California 12th Wisconsin 1st Last election 194 seats, 48.0%[2] 241 seats, 49.1%[2] Seats won 235[lower-alpha 2] 199[lower-alpha 2] Seat change 41[lower-alpha 3] 41[lower-alpha 4] Popular vote 60,572,245[3] 50,861,970[3] Percentage 53.4% 44.8% Swing 5.4% 4.3%
Results:      Democratic hold      Democratic gain      Republican hold      Republican gain      Result voided and sent to special election[lower-alpha 5]
Speaker before election Paul Ryan Republican Elected Speaker Nancy Pelosi Democratic

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In the 2018 elections, the Democrats, led by Nancy Pelosi, won control of the House. The Democrats gained a net total of 41 seats from the total number of seats they had won in the 2016 elections. The 41-seat gain was the Democrats' largest gain of House seats since the post-Watergate 1974 elections, when they picked up 49 seats. This was the first time since 1954 that Democrats flipped a chamber of Congress in a Republican president's first midterm. Democrats also won the popular vote by an 8.6% margin, the largest margin of victory for any party during a midterm election since 1986.

Upon the opening of the 116th Congress, Pelosi was elected as Speaker of the House.^[5] Incumbent Republican House Speaker Paul Ryan chose not to run for another term.^[6] In November 2018, House Republicans elected Kevin McCarthy as House Minority Leader.^[7]

The House Republicans' passage of the widely unpopular American Health Care Act of 2017 to repeal the Affordable Care Act, as well as opposition to Trump's policies, his poor approval ratings, and questions about his personal stamina for office, are credited for the Democratic takeover of the House.

As of 2022, this marks the latest time Democrats won any house seats in Oklahoma and Utah, the latest time they won a majority of seats in Iowa and Minnesota, and the latest time they won every seat based in New York City, Los Angeles County, California, or Orange County, California.

In the November general elections, 55 incumbents did not seek re-election, some of whom sought other elected office.

Four seats opened early due to resignations or death and were not filled until the November elections.

Three other members announced their retirements but then resigned early before their terms ended.

1. Texas 27: Blake Farenthold (R) announced his retirement December 14, 2017. He resigned on April 6, 2018. His seat was filled by a special election for the remainder of the term.
2. Utah 3: Jason Chaffetz (R) announced his retirement April 19, 2017. He resigned on June 30, 2017. His seat was filled by a special election for the remainder of the term.
3. West Virginia 3: Evan Jenkins (R) announced his retirement May 8, 2017, to run for U.S. Senator.^[18] He lost the nomination and then resigned September 30, 2018, when appointed to the Supreme Court of Appeals of West Virginia. His seat was not filled until the regular election for the next congress.

In 89 races, the margin of victory was under 10%.

Elections ordered by election date.

Source: Edison Research exit poll for the National Election Pool^[44]

For the regularly scheduled November elections.

The state congressional delegation remained the same, at 6–1 for Republicans.

Republicans maintained control of the sole seat in the state.

The state congressional delegation flipped from a 5–4 Republican majority to a 5–4 Democratic majority.

The state congressional delegation remained the same with a 4–0 Republican majority.

The Democratic majority increased from 39–14 to 46–7.

The state congressional delegation flipped from a 4–3 Republican majority to a 4–3 Democratic majority.

The state congressional delegation remained unchanged at 5–0 Democrats.

Democrats retained control of the sole seat in the state.

The Republican majority was reduced from 16–11 to 14–13.