2018 United States House of Representatives elections in Oklahoma

These are tables of congressional delegations from the State of Texas to the United States Senate and United States House of Representatives.

The Republican Party, also referred to as the GOP, is one of the two major contemporary political parties in the United States. The GOP was founded in 1854 by anti-slavery activists who opposed the Kansas–Nebraska Act, which allowed for the potential expansion of chattel slavery into the western territories. It has been the main political rival of the Democratic Party since the mid-1850s. Like them, the Republican Party is a big tent of competing and often opposing ideologies. Presently, the Republican Party contains prominent conservative, centrist, populist, and right-libertarian factions.

The Democratic Party is one of two major contemporary political parties in the United States. Founded in 1828, it was predominantly built by Martin Van Buren, who assembled politicians in every state behind war hero Andrew Jackson, making it the world's oldest active political party. Its main political rival has been the Republican Party since the 1850s, with both parties being big tents of competing and often opposing viewpoints. Modern American liberalism — a variant of social liberalism — is the party's majority ideology. The party also has notable centrist, social democratic, and left-libertarian factions.

The Tulsa metropolitan area, officially defined as the Tulsa metropolitan statistical area is a metropolis in northeastern Oklahoma centered around the city of Tulsa and encompassing Tulsa, Rogers, Wagoner, Osage, Creek, Okmulgee and Pawnee counties. It had a population of 1,023,988 according to the 2021 U.S. census estimates.

Creek County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 69,967. Its county seat is Sapulpa.

Rogers County is located in the northeastern part of the U.S. state of Oklahoma. As of the 2020 census, the population was 95,240, making it the sixth-most populous county in Oklahoma. The county seat is Claremore. Rogers County is included in the Tulsa, OK Metropolitan Statistical Area.

Tulsa County is located in the U.S. state of Oklahoma. As of the 2020 census, the population was 669,279, making it the second-most populous county in Oklahoma, behind only Oklahoma County. Its county seat and largest city is Tulsa, the second-largest city in the state. Founded at statehood, in 1907, it was named after the previously established city of Tulsa. Before statehood, the area was part of both the Creek Nation and the Cooweescoowee District of Cherokee Nation in Indian Territory.

Wagoner County is a county located in the U.S. state of Oklahoma. As of the 2020 census, the population was 80,981. Its county seat is Wagoner.

James Frederick Bridenstine is an American military officer and politician who served as the 13th administrator of the National Aeronautics and Space Administration (NASA). Bridenstine was the United States representative for Oklahoma's 1st congressional district, based in Tulsa from January 3, 2013, to April 23, 2018. He is a member of the Republican Party. Bridenstine currently works in the private sector and holds positions at Voyager Space Holdings, Viasat, Acorn Growth Companies and Firefly Aerospace.

The National Aeronautics and Space Administration is an independent agency of the U.S. federal government responsible for the civil space program, aeronautics research, and space research.

Nathan Ryan Dahm is an American politician who has served as the Oklahoma State Senator for the 33rd district since 2012. Prior to holding office, Dahm worked as a missionary in Romania and was a Tulsa County Tea Party activist. Dahm has thrice sought federal office: first running for Oklahoma's 1st congressional district in 2010, then running for Oklahoma's 1st congressional district again in 2018, and then running for retiring Senator Jim Inhofe's United States Senate seat in 2022. He is term-limited in 2024. He was re-elected by default in 2020.

Kevin Ray Hern is an American businessman and politician from Oklahoma. A Republican, he is a member of the United States House of Representatives for Oklahoma's 1st congressional district. The chair of the Republican Study Committee, a group of conservative Republicans in the House, Hern was first elected in 2018. In the 2023 Speaker of the House of Representatives election, Hern was nominated for Speaker of the House as a protest candidate against Kevin McCarthy.

The Republican Party, also referred to as the GOP, is one of the two major contemporary political parties in the United States. The GOP was founded in 1854 by anti-slavery activists who opposed the Kansas–Nebraska Act, which allowed for the potential expansion of chattel slavery into the western territories. It has been the main political rival of the Democratic Party since the mid-1850s. Like them, the Republican Party is a big tent of competing and often opposing ideologies. Presently, the Republican Party contains prominent conservative, centrist, populist, and right-libertarian factions.

Muskogee is the thirteenth-largest city in Oklahoma and the county seat of Muskogee County. Home to Bacone College, it lies approximately 48 miles (77 km) southeast of Tulsa. The population of the city was 36,878 as of the 2020 census, a 6.0 percent decrease from 39,223 in 2010.

Mark Wayne "Markwayne" Mullin is an American businessman and politician who has served as the junior United States senator from Oklahoma since 2023. A member of the Republican Party, he was elected in a special election in 2022 to serve the remainder of Jim Inhofe's term. Mullin is the first Native American U.S. senator since Ben Nighthorse Campbell retired in 2005. He is also the second Cherokee Nation citizen elected to the Senate; the first, Robert Latham Owen, retired in 1925. Before being elected to the Senate, Mullin served as the U.S. representative for Oklahoma's 2nd congressional district from 2013 to 2023.

The Republican Party, also referred to as the GOP, is one of the two major contemporary political parties in the United States. The GOP was founded in 1854 by anti-slavery activists who opposed the Kansas–Nebraska Act, which allowed for the potential expansion of chattel slavery into the western territories. It has been the main political rival of the Democratic Party since the mid-1850s. Like them, the Republican Party is a big tent of competing and often opposing ideologies. Presently, the Republican Party contains prominent conservative, centrist, populist, and right-libertarian factions.

Thomas Allen Coburn was an American politician and physician who served as a United States senator for Oklahoma from 2005, until his resignation in 2015. A Republican, he previously served as a United States representative.

The Democratic Party is one of two major contemporary political parties in the United States. Founded in 1828, it was predominantly built by Martin Van Buren, who assembled politicians in every state behind war hero Andrew Jackson, making it the world's oldest active political party. Its main political rival has been the Republican Party since the 1850s, with both parties being big tents of competing and often opposing viewpoints. Modern American liberalism — a variant of social liberalism — is the party's majority ideology. The party also has notable centrist, social democratic, and left-libertarian factions.

Daily Kos is a group blog and internet forum focused on the U.S. Democratic Party and liberal American politics. The site includes glossaries and other content. It is sometimes considered an example of "netroots" activism.

The Oklahoma Panhandle is a salient in the extreme northwestern region of the U.S. state of Oklahoma, consisting of Cimarron County, Texas County and Beaver County, from west to east. As with other salients in the United States, its name comes from the similarity of its shape to the handle of a pan.

Ponca City is a city in Kay County in the U.S. state of Oklahoma. The city was named after the Ponca tribe. Ponca City had a population of 25,387 at the time of the 2010 census- and a population of 24,424 in the 2020 census.

Stillwater is a city in and the county seat of Payne County, Oklahoma, United States. It is located in north-central Oklahoma at the intersection of U.S. Route 177 and State Highway 51. As of the 2010 census, the city population was 45,688, making it the tenth-largest city in Oklahoma. The Stillwater Micropolitan Statistical Area had a population of 78,399 according to the 2012 census estimate. Stillwater was part of the first Oklahoma Land Run held on April 22, 1889, when the Unassigned Lands were opened for settlement and became the core of the new Oklahoma Territory. The city charter was adopted on August 24, 1889, and operates under a council-manager government system.

The Osage Nation is a Midwestern Native American tribe of the Great Plains. The tribe developed in the Ohio and Mississippi river valleys around 700 BC along with other groups of its language family. They migrated west after the 17th century, settling near the confluence of the Missouri and Mississippi rivers, as a result of Iroquois invading the Ohio Valley in a search for new hunting grounds.

Frank Dean Lucas is an American politician serving as the U.S. representative for Oklahoma's 3rd congressional district since 2003, having previously represented the 6th district from 1994 to 2003. A member of the Republican Party, Lucas has chaired the House Committee on Science, Space and Technology since 2023. His district, numbered as the 6th from 1994 to 2003, is Oklahoma's largest congressional district and one of the largest in the nation that does not cover an entire state. It covers 34,088.49 square miles and stretches from the Panhandle to the fringes of the Tulsa suburbs, covering almost half of the state's land mass. Lucas is the dean of Oklahoma's House delegation.

The Democratic Party is one of two major contemporary political parties in the United States. Founded in 1828, it was predominantly built by Martin Van Buren, who assembled politicians in every state behind war hero Andrew Jackson, making it the world's oldest active political party. Its main political rival has been the Republican Party since the 1850s, with both parties being big tents of competing and often opposing viewpoints. Modern American liberalism — a variant of social liberalism — is the party's majority ideology. The party also has notable centrist, social democratic, and left-libertarian factions.

Daily Kos is a group blog and internet forum focused on the U.S. Democratic Party and liberal American politics. The site includes glossaries and other content. It is sometimes considered an example of "netroots" activism.

The Republican Party, also referred to as the GOP, is one of the two major contemporary political parties in the United States. The GOP was founded in 1854 by anti-slavery activists who opposed the Kansas–Nebraska Act, which allowed for the potential expansion of chattel slavery into the western territories. It has been the main political rival of the Democratic Party since the mid-1850s. Like them, the Republican Party is a big tent of competing and often opposing ideologies. Presently, the Republican Party contains prominent conservative, centrist, populist, and right-libertarian factions.

South Central Oklahoma is an amorphous region in the state of Oklahoma, perhaps encompassing 10 counties. It is centered on the Arbuckle Mountains, an ancient, eroded range traversing some 70 miles (110 km) across the region, and surrounded by rivers and lakes, notably Lake Texoma, Lake Murray and Lake of the Arbuckles. For tourism purposes, the Oklahoma Department of Tourism has more narrowly defined South Central Oklahoma, which they refer to as Chickasaw Country, as being a seven-county region including Pontotoc, Johnston, Marshall, Garvin, Murray, Carter, and Love counties. A ten-county definition might also include Coal, Atoka, and Bryan counties, although the Department of Tourism includes those in Choctaw Country. The Choctaw Nation of Oklahoma covers the eastern third of the region. Its headquarters is in Durant, and its capitol building, now a museum, is in Tuskahoma. The Chickasaw Nation lies within the region, with the tribal capitol building located at Tishomingo and its headquarters in Ada. The Chickasaw Nation, which runs "Chickasawcountry.com"., promotes the idea of Chickasaw Country as the 13 south-central Oklahoma counties that comprise the Chickasaw Nation, being the Tourism Department’s seven counties plus Coal, Bryan, Jefferson, Stephens, Grady, and McClain counties.

Canadian County is a county located in the U.S. state of Oklahoma. As of the 2020 census, the population was 154,405, making it the fifth most populous county in Oklahoma. Its county seat is El Reno.

Comanche County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 124,098, making it the fourth-most populous county in Oklahoma. Its county seat is Lawton. The county was created in 1901 as part of Oklahoma Territory. It was named for the Comanche tribal nation.

Cleveland County is a county in the central part of the U.S. state of Oklahoma. The population was 295,528 at the 2020 United States Census, making it the third-most populous county in Oklahoma. Its county seat is Norman. The county was named for U.S. President Grover Cleveland.

Thomas Jeffery Cole is the U.S. representative for Oklahoma's 4th congressional district, serving since 2003. He is a member of the Republican Party and serves as the chairman of the House Rules Committee. During his tenure as the chairman of the National Republican Congressional Committee (NRCC) from 2006 to 2008, he was the fourth-ranking Republican in the House.

The Republican Party, also referred to as the GOP, is one of the two major contemporary political parties in the United States. The GOP was founded in 1854 by anti-slavery activists who opposed the Kansas–Nebraska Act, which allowed for the potential expansion of chattel slavery into the western territories. It has been the main political rival of the Democratic Party since the mid-1850s. Like them, the Republican Party is a big tent of competing and often opposing ideologies. Presently, the Republican Party contains prominent conservative, centrist, populist, and right-libertarian factions.

The Democratic Party is one of two major contemporary political parties in the United States. Founded in 1828, it was predominantly built by Martin Van Buren, who assembled politicians in every state behind war hero Andrew Jackson, making it the world's oldest active political party. Its main political rival has been the Republican Party since the 1850s, with both parties being big tents of competing and often opposing viewpoints. Modern American liberalism — a variant of social liberalism — is the party's majority ideology. The party also has notable centrist, social democratic, and left-libertarian factions.

Daily Kos is a group blog and internet forum focused on the U.S. Democratic Party and liberal American politics. The site includes glossaries and other content. It is sometimes considered an example of "netroots" activism.

Central Oklahoma is the geographical name for the central region of the U.S. state of Oklahoma. It is also known by the Oklahoma Department of Tourism designation, Frontier Country, defined as the twelve-county region including Canadian, Grady, Logan, Oklahoma, Cleveland, McClain, Payne, Lincoln, Pottawatomie, Seminole, Okfuskee, and Hughes counties.

Oklahoma City, officially the City of Oklahoma City, and often shortened to OKC, is the capital and largest city of the U.S. state of Oklahoma. The county seat of Oklahoma County, it ranks 20th among United States cities in population, and is the 8th largest city in the Southern United States. The population grew following the 2010 census and reached 681,054 in the 2020 census. The Oklahoma City metropolitan area had a population of 1,396,445, and the Oklahoma City–Shawnee Combined Statistical Area had a population of 1,469,124, making it Oklahoma's largest municipality and metropolitan area by population.

Steven Dane Russell is President and CEO of JAARS, Inc. He is a retired American soldier and former politician. He served in the United States House of Representatives for Oklahoma's 5th congressional district from 2015 to 2019, after serving in the Oklahoma Senate from 2009 to 2013. Russell is a member of the Republican Party.

Kendra Suzanne Horn is an American lawyer and politician who served as the U.S. representative for Oklahoma's 5th congressional district from 2019 to 2021. A member of the Democratic Party, her district included almost all of Oklahoma City.

The Republican Party, also referred to as the GOP, is one of the two major contemporary political parties in the United States. The GOP was founded in 1854 by anti-slavery activists who opposed the Kansas–Nebraska Act, which allowed for the potential expansion of chattel slavery into the western territories. It has been the main political rival of the Democratic Party since the mid-1850s. Like them, the Republican Party is a big tent of competing and often opposing ideologies. Presently, the Republican Party contains prominent conservative, centrist, populist, and right-libertarian factions.

The Democratic Party is one of two major contemporary political parties in the United States. Founded in 1828, it was predominantly built by Martin Van Buren, who assembled politicians in every state behind war hero Andrew Jackson, making it the world's oldest active political party. Its main political rival has been the Republican Party since the 1850s, with both parties being big tents of competing and often opposing viewpoints. Modern American liberalism — a variant of social liberalism — is the party's majority ideology. The party also has notable centrist, social democratic, and left-libertarian factions.

Tyson Todd Meade is an American musician, painter, writer, teacher, and disc jockey best known as the principal singer and songwriter for pioneering alternative rock bands Defenestration and Chainsaw Kittens. Defenestration is credited in the book Road to Nirvana as one of the bands that influenced Kurt Cobain's music and Billy Corgan often credited Chainsaw Kittens as one of his favorite bands—Corgan even once wrote Meade when he was working the first Smashing Pumpkins album lauding the brilliance of Chainsaw Kittens first album, Violent Religion.