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Thomas Hawley Tuberville is an American politician and retired college football coach and sports broadcaster who is the senior United States senator from Alabama, a seat he has held since 2021. He is a member of the Republican Party. Before entering politics, Tuberville was the head football coach at Auburn University from 1999 to 2008. He was also the head football coach at the University of Mississippi from 1995 to 1998, Texas Tech University from 2010 to 2012, and the University of Cincinnati from 2013 to 2016.

Katie Elizabeth Boyd Britt is an American politician and attorney serving since 2023 as the junior United States senator from Alabama. A member of the Republican Party, Britt is the first woman to be elected to the U.S. Senate from Alabama and the youngest Republican woman to be elected to the Senate. She was president and CEO of the Business Council of Alabama from 2019 to 2021, and served as chief of staff for the previous incumbent, Richard Shelby, from 2016 to 2018. Britt is expected to become Alabama's senior senator when Tommy Tuberville leaves office in January 2027.

Lisa Ann Murkowski is an American attorney and politician serving as the senior United States senator from the state of Alaska, having held the seat since 2002. She is the first woman to represent Alaska in the U.S. Congress and is the Senate's second-most senior Republican woman. Murkowski became dean of Alaska's congressional delegation upon Representative Don Young's death.

John Nichols Boozman is an American politician and former optometrist serving as the senior United States senator from Arkansas, a seat he has held since 2011. From 2001 to 2011, he served as the U.S. representative for Arkansas's 3rd congressional district. A member of the Republican Party, Boozman has been the dean of Arkansas's congressional delegation since 2013.

Adam Bennett Schiff is an American lawyer and politician serving as the junior United States senator from California, a seat he has held since 2024. A member of the Democratic Party, Schiff served in the United States House of Representatives from 2001 to 2024 and in the California State Senate from 1996 to 2000. Before being elected to public office, Schiff was a judicial law clerk, an assistant United States attorney from 1987 to 1993, and an unsuccessful candidate for California State Assembly in 1994.

John Wright Hickenlooper Jr. is an American politician, geologist, and businessman serving as the junior United States senator from Colorado since 2021. A member of the Democratic Party, he served as the 42nd governor of Colorado from 2011 to 2019 and as the 43rd mayor of Denver from 2003 to 2011.

Michael Farrand Bennet is an American attorney and politician serving as the senior United States senator from Colorado, a seat he has held since 2009. A member of the Democratic Party, he was appointed to the seat when Senator Ken Salazar became Secretary of the Interior. He previously served as chief of staff to Denver mayor John Hickenlooper, and superintendent of Denver Public Schools

Christopher Scott Murphy is an American lawyer, author, and politician serving since 2013 as the junior United States senator from Connecticut. A member of the Democratic Party, he served from 2007 to 2013 in the United States House of Representatives, representing Connecticut's 5th congressional district.

Richard Blumenthal is an American politician and attorney serving as the senior United States senator from Connecticut. A member of the Democratic Party, he has been a member of the Senate since 2011. Blumenthal previously served as U.S. attorney for the District of Connecticut, as a member of the Connecticut General Assembly, and as the 23rd Connecticut attorney general.

Christopher Andrew Coons is an American politician and lawyer serving as the senior United States senator from Delaware, a seat he has held since 2010. A member of the Democratic Party, he previously served as the county executive of New Castle County from 2005 to 2010.

Lisa LaTrelle Blunt Rochester is an American politician and former management consultant serving as the junior United States senator from Delaware, a seat she has held since 2025. A member of the Democratic Party, she previously served as the U.S. representative for Delaware's at-large congressional district from 2017 to 2025. Blunt Rochester is the first woman and first African American to represent Delaware in both chambers of Congress.

Thomas Jonathan Ossoff is an American politician who has served as the senior United States senator from Georgia since 2021. He is the youngest incumbent U.S. senator, and a member of the Democratic Party.

Mazie Keiko Hirono is an American lawyer and politician serving since 2013 as the junior United States senator from Hawaii. A member of the Democratic Party, Hirono previously served as a member of the United States House of Representatives for Hawaii's 2nd congressional district from 2007 to 2013. She has been the dean of Hawaii's congressional delegations since 2013, when Senator Daniel Akaka retired. Hirono also served as a member of the Hawaii House of Representatives from 1981 to 1994 and as Hawaii's tenth lieutenant governor from 1994 to 2002. She was the Democratic nominee for governor of Hawaii in 2002, but lost to Republican Linda Lingle.

James Elroy Risch is an American lawyer and politician who has served as the junior United States senator from Idaho since 2009. A member of the Republican Party, he served as lieutenant governor of Idaho under governors Dirk Kempthorne and Butch Otter, and briefly as governor between their terms.

Todd Christopher Young is an American politician and attorney serving as the senior United States senator from Indiana, a seat he has held since 2017. From 2011 to 2017, he was the U.S. representative for Indiana's 9th congressional district. Young is a member of the Republican Party.

Gerald Wesley Moran is an American lawyer and politician who is the senior United States senator from Kansas, a seat he has held since 2011. Previously, he was a member of the United States House of Representatives and the Kansas Senate. He is a member of the Republican Party.

Christopher Van Hollen Jr. is an American attorney and politician serving as the senior United States senator from Maryland, a seat he has held since 2017. A member of the Democratic Party, he served as the U.S. representative for Maryland's 8th congressional district from 2003 to 2017 and as a Maryland state senator from 1995 to 2003.

Elizabeth Ann Warren is an American politician and former law professor serving as the senior United States senator from Massachusetts, a seat she has held since 2013. A member of the Democratic Party and regarded as a progressive, Warren has focused on consumer protection, equitable economic opportunity, and the social safety net while in the Senate. Warren was also a candidate in the 2020 Democratic Party presidential primaries, ultimately finishing third after Joe Biden and Bernie Sanders.

Edward John Markey is an American politician serving as the junior United States senator from the state of Massachusetts, a seat he has held since 2013. A member of the Democratic Party, he served 20 terms as the U.S. representative for Massachusetts's 7th congressional district from 1976 to 2013. Before that, he was a member of the Massachusetts House of Representatives from 1973 to 1976. He has been the dean of Massachusetts's congressional delegation since 2009.

Christine Elizabeth "Tina" Smith is an American politician, retired Democratic political consultant, and former businesswoman serving as the junior United States senator from Minnesota, a seat she has held since 2018. A member of the Minnesota Democratic–Farmer–Labor Party (DFL), Minnesota's affiliate of the national Democratic Party, she served from 2015 to 2018 as the 48th Lieutenant Governor of Minnesota under Governor Mark Dayton.

Roger Frederick Wicker is an American politician, attorney, and former Air Force officer serving as the senior United States senator from Mississippi, a seat he has held since 2007. A member of the Republican Party, Wicker was a Mississippi State Senator from 1988 to 1995 and the U.S. representative from Mississippi's 1st congressional district from 1995 until 2007.

Cindy Hyde-Smith is an American politician and lobbyist serving since 2018 as the junior United States senator from Mississippi. A member of the Republican Party, she served from 2012 to 2018 as the Mississippi Commissioner of Agriculture and Commerce and from 2000 to 2012 in the Mississippi State Senate.

Eric Stephen Schmitt is an American attorney and politician serving since 2023 as the junior United States senator from Missouri. A member of the Republican Party, Schmitt served as the 46th state treasurer of Missouri from 2017 to 2019 and as the 43rd Missouri attorney general from 2019 to 2023.

Timothy Patrick Sheehy is an American politician and businessman serving since 2025 as the junior United States senator from Montana. A member of the Republican Party, he is the youngest Republican U.S. senator and the second-youngest U.S. senator, after Jon Ossoff.

Debra Lynelle Fischer is an American politician serving as the senior United States senator from Nebraska, a seat she has held since 2013. A member of the Republican Party, Fischer served in the Nebraska Legislature from 2005 to 2013 and on the Valentine Rural High School Board of Education from 1990 to 2004. She is the third woman to represent Nebraska in the U.S. Senate and the first to be reelected.

Jacklyn Sheryl Rosen is an American politician serving as the junior United States senator from Nevada since 2019. A member of the Democratic Party, she was the U.S. representative for Nevada's 3rd congressional district from 2017 to 2019.

Cynthia Jeanne Shaheen is an American politician and former educator serving since 2009 as the senior United States senator from New Hampshire. A member of the Democratic Party, she served from 1997 to 2003 as the 78th governor of New Hampshire. Shaheen is the first woman elected both governor and a U.S. senator, and was the first elected female governor of New Hampshire.

Martin Trevor Heinrich is an American politician serving as the senior United States senator from New Mexico, a seat he has held since 2013. A member of the Democratic Party, Heinrich served as the U.S. representative from New Mexico's 1st congressional district from 2009 to 2013. He and fellow senator Ben Ray Luján are the co-deans of New Mexico's congressional delegations.

Kirsten Elizabeth Gillibrand is an American lawyer and politician serving as the junior United States senator from New York since 2009. A member of the Democratic Party, she served as a member of the U.S. House of Representatives from 2007 to 2009.

Bernardo Francisco Moreno Mejía is an American politician and businessman serving since 2025 as the senior United States senator from Ohio. He is a member of the Republican Party.

Alan Stuart Armstrong is an American politician and businessman serving as the junior United States senator from Oklahoma, a seat he has held since March 2026. A member of the Republican Party, he served from 2011 to 2025 as the CEO of the oil and gas company Williams.

Ronald Lee Wyden is an American attorney and politician serving as the senior United States senator from Oregon, a seat he has held since 1996. A member of the Democratic Party, he served in the United States House of Representatives from 1981 until 1996. Upon the death of Representative Don Young in 2022, Wyden became the dean of the West Coast's Congressional delegation. He is the dean of Oregon's congressional delegation and serves as the ranking member of the Senate Finance Committee. Known for his libertarian-leaning stances within the Democratic Party, Wyden has been a prominent advocate for privacy rights, internet freedom, and limiting government surveillance, positioning him as a defender of civil liberties.

Sheldon Whitehouse is an American politician and attorney serving as the junior United States senator from Rhode Island, a seat he has held since 2007. A member of the Democratic Party, he served as the United States Attorney for the District of Rhode Island from 1993 to 1998, and as the 71st attorney general of Rhode Island from 1999 to 2003. He was elected to the Senate in 2006, defeating Republican incumbent Lincoln Chafee. He was reelected in 2012, 2018, and 2024.

John Francis Reed is an American politician, lawyer, and former Army officer serving as the senior United States senator from Rhode Island, a seat he was first elected to in 1996. A member of the Democratic Party, he was the U.S. representative for Rhode Island's 2nd congressional district from 1991 to 1997. Reed graduated from the United States Military Academy and Harvard University. He served in the U.S. Army on active duty as an infantry officer in the 82nd Airborne Division from 1971 to 1979 and as a reservist from 1979 to 1991, retiring with the rank of Major. He has been the dean of Rhode Island's congressional delegation since John Chafee died in 1999.

John Randolph Thune is an American politician serving as the senior United States senator from South Dakota, a seat he has held since 2005. A member of the Republican Party, Thune has served since 2025 as Senate majority leader and Senate Republican leader. From 1997 to 2003, Thune served as the U.S. representative for South Dakota's at-large congressional district.

Mary Marsha Blackburn is an American politician and businesswoman serving as the senior United States senator from Tennessee. Blackburn was first elected to the Senate in 2018. A member of the Republican Party, Blackburn was a state senator from 1999 to 2003 and represented Tennessee's 7th congressional district in the United States House of Representatives from 2003 to 2019, during which time the National Journal rated her among the House's most conservative members.

Rafael Edward Cruz is a Canadian-born American politician and attorney serving since 2013 as the junior United States Senator from Texas. A member of the Republican Party, he served from 2003 to 2008 as the third Solicitor General of Texas. He has been described as a movement conservative, a social conservative, and a constitutional conservative with libertarian leanings. Cruz has chaired the Senate Commerce Committee since 2025.

John Cornyn III is an American politician and former judge who is the senior United States senator for Texas, a seat he has held since 2002. He is a member of the Republican Party.

Michael Shumway Lee is an American lawyer and politician serving as the senior United States senator from Utah, a seat he has held since 2011. A member of the Republican Party, Lee has been Utah's senior senator since 2019 and the dean of Utah's congressional delegation since 2021.

Peter Francis Welch is an American lawyer and politician serving since 2023 as the junior United States senator from Vermont. A member of the Democratic Party, he was the U.S. representative for Vermont's at-large congressional district from 2007 to 2023. He has been a major figure in Vermont politics for over four decades and is only the second Democrat to represent Vermont in the Senate, after his predecessor, Patrick Leahy.

Bernard Sanders is an American politician and activist serving as the senior United States senator from Vermont, a seat he has held since 2007. He is the longest-serving independent in U.S. congressional history, but maintains a close relationship with the Democratic Party, having caucused with House and Senate Democrats for most of his congressional career and sought the party's presidential nomination in 2016 and 2020. Ideologically a democratic socialist, Sanders is regarded as one of the main leaders of the 21st-century American progressive movement.

Mark Robert Warner is an American businessman and politician serving as the senior United States senator from Virginia, a seat he has held since 2009. A member of the Democratic Party, Warner served as the 69th governor of Virginia from 2002 to 2006. He is vice chair of the Senate Democratic Caucus and vice chair of the Senate Intelligence Committee.

Patricia Lynn Murray is an American politician serving as the senior United States senator from Washington, a seat she has held since 1993. From 2023 to 2025, she held the position of president pro tempore of the United States Senate, becoming the first woman to hold the position. Prior to serving in the U.S. Senate, she served in the Washington State Senate from 1989 to 1993. She is a member of the Democratic Party.

Maria Ellen Cantwell is an American politician serving since 2001 as the junior U.S. senator from Washington. A member of the Democratic Party, she served from 1987 to 1993 in the Washington House of Representatives and from 1993 to 1995 in the United States House of Representatives.

James Conley Justice II is an American politician and businessman serving since 2025 as the junior United States senator from West Virginia. A member of the Republican Party, he served from 2017 to 2025 as the 36th governor of West Virginia. Justice was once a billionaire, but his net worth was estimated at $664.2 million in 2025, making him the richest U.S. senator as of that year. He inherited a coal mining business from his father that included 94 companies. He and his family own the Greenbrier, a luxury resort and National Historic Landmark in White Sulphur Springs.

Shelley Wellons Moore Capito is an American politician serving as the senior United States senator from West Virginia. A member of the Republican Party, Capito served from 2001 to 2015 as the U.S. representative from West Virginia's 2nd congressional district. She is the daughter of three-term West Virginia governor and six-term U.S. representative Arch Alfred Moore Jr.

Ronald Harold Johnson is an American businessman and politician serving as the senior United States senator from Wisconsin, a seat he has held since 2011. A Republican, Johnson was first elected to the U.S. Senate in 2010, defeating Democratic incumbent Russ Feingold. Johnson defeated Feingold in a rematch in 2016, and defeated Lieutenant Governor Mandela Barnes in 2022. Before entering politics, he was chief executive officer of a plastics manufacturer in Oshkosh, Wisconsin.

Tammy Suzanne Green Baldwin is an American politician and lawyer serving since 2013 as the junior United States senator from Wisconsin. A member of the Democratic Party, she has also served as the secretary of the Senate Democratic Caucus since 2017. Baldwin has been the dean of the United States congressional delegation from Wisconsin since 2023, when Representative Ron Kind retired.