The 1978 United States House of Representatives elections was an election for the

United States House of Representatives The United States House of Representatives, often referred to as the House of Representatives, the U.S. House, or simply the House, is the lower chamber of the United States Congress, with the Senate being the upper chamber. Together they ...

in 1978 which occurred in the middle of Democratic President

Jimmy Carter James Earl Carter Jr. (born October 1, 1924) is an American politician who served as the 39th president of the United States from 1977 to 1981. A member of the Democratic Party, he previously served as the 76th governor of Georgia from 1 ...

's term, amidst an energy crisis and rapid inflation. The Democratic Party lost a net of 15 seats to the Republican Party, and thus lost their two-thirds supermajority, but still maintained a large 277-seat majority. As of , this was the last

midterm election Apart from general elections and by-elections, midterm election refers to a type of election where the people can elect their representatives and other subnational officeholders (e.g. governor, members of local council) in the middle of the term ...

where the Democrats managed to maintain a majority in the House of Representatives under a Democratic president and the last midterm election in which a registered

third party Third party may refer to: Business * Third-party source, a supplier company not owned by the buyer or seller * Third-party beneficiary, a person who could sue on a contract, despite not being an active party * Third-party insurance, such as a V ...

member was elected.

Overall results

Source
Election Statistics - Office of the Clerk

Special elections

Alabama

Alaska

Arizona

Arkansas

California

Colorado

Connecticut

Delaware

Florida

Georgia

Hawaii

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Louisiana

Maine

Maryland

Massachusetts

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Jersey

New Mexico

New York

North Carolina

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

Rhode Island

South Carolina

South Dakota

Tennessee

Texas

Utah

Vermont

Virginia

Washington

West Virginia

Wisconsin

, - , ,

Les Aspin Leslie Aspin Jr. (July 21, 1938 – May 21, 1995) was an American Democratic Party politician who served as the U.S. representative for Wisconsin's 1st congressional district from 1971 to 1993 and as the 18th United States Secretary of Defe ...

, , Democratic ,

1970 Events January * January 1 – Unix time epoch reached at 00:00:00 UTC. * January 5 – The 7.1 Tonghai earthquake shakes Tonghai County, Yunnan province, China, with a maximum Mercalli intensity of X (''Extreme''). Between 10,000 and ...

, Incumbent re-elected. , nowrap , , - , , Robert Kastenmeier , , Democratic ,

1958 Events January * January 1 – The European Economic Community (EEC) comes into being. * January 3 – The West Indies Federation is formed. * January 4 ** Edmund Hillary's Commonwealth Trans-Antarctic Expedition completes the third ...

, Incumbent re-elected. , nowrap , , - , , Alvin Baldus , , Democratic , 1974 , Incumbent re-elected. , nowrap , , - , , Clement J. Zablocki , , Democratic , 1948 , Incumbent re-elected. , nowrap , , - , ,

Henry S. Reuss Henry Schoellkopf Reuss (February 22, 1912 – January 12, 2002) was a Democratic U.S. Representative from Wisconsin. Early life Henry Schoellkopf Reuss was born in Milwaukee, Wisconsin. He was the son of Gustav A. Reuss (pronounced ''Royce' ...

, , Democratic , 1954 , Incumbent re-elected. , nowrap , , - , , William A. Steiger , , Republican , 1966 , Incumbent re-elected. , nowrap , , - , ,

Dave Obey David Ross Obey ( ; born October 3, 1938) is an American lobbyist and former politician who served as a member of the United States House of Representatives for from 1969 to 2011. The district includes much of the northwestern portion of the st ...

, , Democratic , 1969 , Incumbent re-elected. , nowrap , , - , , Robert John Cornell , , Democratic , 1974 , , Incumbent lost re-election.
New member elected.
Republican gain. , nowrap , , - , , Bob Kasten , , Republican , 1974 , , Incumbent retired to run for Governor of Wisconsin.
New member elected.
Republican hold. , nowrap ,