Thirty-five of the 100 U.S. Senate seats were up for election on Nov. 3, 2020. Two Georgia Democrats, Jon Ossoff and Rev. Raphael Warnock, won their seats in Georgia's Runoff Elections on Jan. 5, 2021, turning the state from red to blue. This also marked the first time in nearly 20 years that Georgia sent a Democrat to the Senate.
On Jan. 20, 2021, Kamala Harris—the first-ever woman, Black person, and person of South Asian descent to become vice president—swore in Alex Padilla, who took the vacancy left by Harris when she exited as a California senator. She also swore in Warnock and Ossoff, which shifted control in the Senate. Democrats officially took the Senate, with Vice President Harris being the tie-breaking vote, giving the party both control of the White House and Congress for the first time in a decade.
This change not only shifts party control but brings greater diversity to the U.S. Senate. Alex Padilla became the first Latino California senator. Sen. Warnock is Georgia's first Black senator, and Sen. Ossoff is not only Georgia's first Jewish senator, but the Senate's first millennial as well. Sen. Chuck Schumer became the first Jewish majority leader. The Senate now includes 50 Republican members and 50 Democratic members, because both Independent senators, Bernie Sanders of Vermont and Angus King of Maine, affiliate themselves with the Democrats.
To learn more about each state's U.S. senators, Stacker compiled data from the U.S. Senate website and Ballotpedia, which provides a biography and key issues for each one. Each state has two U.S. senators who are elected to six-year terms (barring a need for a special election during that term). This data reflects up-to-date information as of 2021.
Keep reading to learn more about the senators in your home state.
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- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 1987
- Years in office: 34 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; Alabama Senate
Richard Shelby became a senator in 1987, having previously served as a U.S. representative. According to GovTrack, Shelby often sponsors bills on public finance and taxes. He won reelection in 2016.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2021
- Years in office: 0 years, 0 months
- Current term up in: 2026
- Previous office(s): none
Tommy Tuberville is known for his 40 years coaching college football. He supports law enforcement and the military and felt called to run for office because of his admiration for his father, a decorated World War II veteran. A staunch supporter of health-care reform and defender of the Second Amendment, Tuberville aligned himself with former-president Donald Trump during his Senate campaign.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): Alaska Attorney General; Assistant Secretary of State for Economic and Business Affairs
Dan Sullivan was the Alaska commissioner of natural resources before becoming a senator. Sullivan, a Marine veteran, serves on the Committee on Armed Services and Committee on Veterans' Affairs.
- Political party affiliation: Republican
- Assumed Senate seat on: Dec. 20, 2002
- Years in office: 18 years, 0 months
- Current term up in: 2022
- Previous office(s): Alaska House of Representatives
Lisa Murkowski began her career as a senator in 2003. Murkowski is viewed as a moderate Republican and she famously voted against efforts to repeal the Affordable Care Act in 2017. She is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2019
- Years in office: 2 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Arizona Senate; Arizona House of Representatives
Kyrsten Sinema got her start in politics working on Ralph Nader's presidential campaign in 2000. She made a name for herself working for the right to same-sex marriage in Arizona and an expansion of LGBTQ+ rights in the state.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Dec. 2, 2020
- Years in office: 0 years, 1 month
- Current term up in: 2022
- Previous office(s): none
Mark Kelly served in the United States Navy and logged over 20 million miles of space travel in his time as an astronaut for NASA before retiring in 2011. In that same year, his wife Gabby Giffords, a Democrat and former member of the U.S. House was shot in the head during a political event. Kelly is the co-founder of Americans for Responsible Solutions, which advocates for gun control.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; Rogers Public Schools Board
John Boozman was a U.S. representative for Arkansas before becoming one of the state's senators. According to GovTrack, Boozman often sponsors bills related to the armed forces. He is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House
Tom Cotton won the U.S. Senate seat for Arkansas in 2014 by beating Democrat Mark Pryor. He serves on the Committee on Armed Services, and is up for reelection this year.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 20, 2021
- Years in office: 0 years, 1 month
- Current term up in: 2026
- Previous office(s): California Secretary of State; California State Senate; Los Angeles City Council
Alex Padilla was appointed to the U.S. Senate by California Governor Gavin Newsom to fill the vacancy left by Kamala Harris after she left her Senate post to serve as the first female vice president of the United States. The former California secretary of state refused to provide voter information to former president Donald Trump and the Presidential Advisory Commission on Election Integrity in 2017. Trump asked for the information to investigate voter fraud.
- Political party affiliation: Democratic
- Assumed Senate seat on: Nov. 10, 1992
- Years in office: 28 years, 2 months
- Current term up in: 2024
- Previous office(s): Mayor of San Francisco; San Francisco Board of Supervisors; Member, California Women's Parole Board.
Dianne Feinstein began her Senate career in 1992. She is a strong advocate for gun control and is considered an ideological leader in the Democratic Party by GovTrack. Despite inconsistent support from within the party, Feinstein handily won her 2018 reelection campaign with 54.2% of the vote, compared to Kevin Leon with 45.8%.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2021
- Years in office: 0 years, 0 months
- Current term up in: 2026
- Previous office(s): Governor of Colorado; Mayor of Denver
John Hickenlooper began his political career in 2003 when he won the Denver mayoral election and received 65% of the runoff vote to defeat City Auditor Donald Mares. He believes health care should be affordable and accessible to everyone and during his senate campaign he promised to fight to cut prescription costs as well as to protect preexisting condition coverage.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 22, 2009
- Years in office: 11 years, 11 months
- Current term up in: 2022
- Previous office(s): Denver Public Schools Superintendent; Chief of staff to the mayor of Denver
Michael F. Bennet was born in New Delhi, India. Recently, he voted against repealing the Affordable Care Act, and is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Connecticut Senate; Connecticut House of Representatives
Chris Murphy won his reelection campaign in 2018. The senator often introduces bills related to education and foreign affairs, according to GovTrack.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): Connecticut Attorney General; Connecticut Senate; Connecticut House of Representatives; United States Attorney
Richard Blumenthal has been outspoken about America’s foreign policy goals, particularly around issues involving Iraq and Russia. According to GovTrack, Blumenthal is an ideologically liberal Democrat. He is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Nov. 15, 2010
- Years in office: 10 years, 1 month
- Current term up in: 2026
- Previous office(s): New Castle County, Delaware County Executive; Member, New Castle County Council
Chris Coons is a Democrat and graduate of Yale Law School. He serves on the Appropriations Committee and won his reelection in 2020.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2001
- Years in office: 20 years, 0 months
- Current term up in: 2024
- Previous office(s): Governor of Delaware; U.S. House; Delaware Treasurer
Thomas R. Carper was reelected in 2018 after winning his party’s primary in September of that year. In 2013, Carper spoke out in support of same-sex marriage.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): Florida House Speaker; West Miami, Florida City Commission
Marco Rubio was unsuccessful in his bid for the presidency in 2016, but decided to run for reelection in Florida and won. He is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 8, 2019
- Years in office: 2 years, 0 months
- Current term up in: 2024
- Previous office(s): Governor of Florida
Since assuming his Senate seat in 2019, Sen. Rick Scott has been a vocal supporter of President Trump, including echoing the president’s sentiments about tamping down on protests that flared up around the U.S. and worldwide in the wake of George Floyd’s death. He has also claimed China is intentionally attempting to thwart progress on the development of a vaccine for the novel coronavirus; his June comments prompted a request from China for proof to back up his accusation.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 22, 2021
- Years in office: 0 years, 0 months
- Current term up in: 2026
- Previous office(s): none
Jon Ossoff is both Georgia’s first Jewish and millenial senator. At the age of 33, he is currently the youngest senator in the chamber. He is an ardent proponent of civil rights.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 22, 2021
- Years in office: 0 years, 0 months
- Current term up in: 2022
- Previous office(s): none
Rev. Raphael Warnock became Georgia's first Black senator, and along with Sen. Jon Ossoff, turned the state from red to blue when both won the Georgia Senate Runoff Election. Growing up with 11 siblings in a housing project, Warnock understands the needs of ordinary citizens. He vowed to fight both environmental racism and climate change.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Dec. 26, 2012
- Years in office: 8 years, 0 months
- Current term up in: 2022
- Previous office(s): Lieutenant Governor of Hawaii; Hawaii House of Representatives
Brian Schatz was appointed in 2012 and won reelection in 2016. He is a vocal opponent of military strikes in Syria, and is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Hawaii House of Representatives; Lieutenant Governor of Hawaii
Mazie Hirono successfully ran for reelection in 2018, while also fighting thyroid cancer. The Democrat won her seat in 2012 by 25 points.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2009
- Years in office: 12 years, 0 months
- Current term up in: 2026
- Previous office(s): Governor of Idaho; Lieutenant Governor of Idaho; Idaho Senate President pro tempore
Sen. James E. Risch is a hard-line conservative Republican who won his reelection in 2020. In late May, Risch co-sponsored a bipartisan bill called the Global Health Security and Diplomacy Act of 2020 that seeks to change leadership in U.S. global health security and inject $3 billion into global health security between 2021 and 2025.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 1999
- Years in office: 22 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; Idaho Senate
Mike Crapo was first elected to the Senate in 1998. He opposed the idea of Donald Trump as the Republican presidential candidate but has since fallen into line in support of President Trump. Crapo is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 1997
- Years in office: 24 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House
Dick Durbin was first elected to the Senate in 1996 and currently serves as the Senate Minority Whip. He is considered one of the most influential senators on immigration and was reelected in 2020.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2017
- Years in office: 4 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; U.S. Assistant Secretary of Veterans Affairs; Illinois Director of Veterans Affairs
Military veteran Tammy Duckworth was elected to the U.S. Senate in 2016 in a competitive race. Before the Senate, she was a member of the House. Duckworth is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2019
- Years in office: 2 years, 0 months
- Current term up in: 2024
- Previous office(s): Indiana House of Representatives; Member, Jasper, Indiana School Board
Sen. Mike Braun introduced a bill in early June 2020 that would bring additional income to farmers and foresters that employ climate-friendly practices. If passed, the bill would allow those businesses to sell carbon credits to polluting companies as a means of offsetting those emissions. His stance on closures amid the coronavirus pandemic has been that it was ill-advised to enact universal, statewide shutdowns.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2017
- Years in office: 4 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House
Todd Young was elected as a senator in 2016, having previously served in the House of Representatives. Young serves on the Committee on Commerce, Science, and Transportation as well as the Committee on Foreign Relations. He is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 1981
- Years in office: 40 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; Iowa House of Representatives
Chuck Grassley was first elected to the Senate in 1980. The Republican politician has a safe Senate seat, according to Ballotpedia, and is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): Iowa Senate
Joni Ernst was the first woman from Iowa elected to Congress with her 2014 win. Ernst voiced opposition to the Iran nuclear deal and has spoken out about the sexual harassment she faced in the military. She was reelected in 2020.
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- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; Kansas Senate
Jerry Moran served in the Kansas State Senate and U.S. House of Representatives before becoming a U.S. senator. He serves on the Committee on Indian Affairs and Committee on Appropriations. Moran is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2021
- Years in office: 0 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House
Roger Marshall used his background as an OB/GYN to fight to eliminate taxpayer funding for abortions as well as to support the defunding of Planned Parenthood in Congress. His term ends in 2027.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 1985
- Years in office: 36 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. Department of Justice Office of Legislative Affairs; Jefferson County Judge/Executive
Mitch McConnell served as the Senate Majority Leader since 2015 and is now Senate Minority Leader. He famously opposed Barack Obama on a number of issues, including filling a Supreme Court vacancy. McConnell won his reelection in 2020.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): none
Rand Paul was first elected to the Senate in 2010. He made an unsuccessful bid for the presidency in 2016, and is opposed to government surveillance of citizens. He is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House; Louisiana Senate
Bill Cassidy defeated an incumbent Democratic senator to win the seat in 2014. Cassidy supported the repeal of the Affordable Care Act, and won reelection in 2020.
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- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2017
- Years in office: 4 years, 0 months
- Current term up in: 2022
- Previous office(s): Louisiana Treasurer; Secretary, Louisiana Department of Revenue
John Kennedy was elected to the Senate in 2016. Kennedy was originally a Democrat while running for state offices in Louisiana, and currently sits on the Committee on Appropriations. He is up for reelection in 2022.
- Political party affiliation: Independent
- Assumed Senate seat on: Jan. 3, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2024
- Previous office(s): Governor of Maine
Sen. Angus King is an Independent, though he is often involved with state Democrats. He secured his reelection bid in 2018.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 1997
- Years in office: 24 years, 0 months
- Current term up in: 2026
- Previous office(s): Deputy Treasurer, MAProfessional and Financial Regulation Commissioner, ME
Susan Collins has served as a senator for more than two decades. She won her toughest reelection bid to date in 2020 against Sarah Gideon. Gideon polled 4 percentage points ahead of Collins back in March of 2020; by the end of May 2020, she was ahead of Collins by 9 percentage points.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2007
- Years in office: 14 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Speaker of the Maryland House of Delegates
Ben Cardin won his 2012 and 2018 reelection bids. He serves on the Commission on Security and Cooperation in Europe, and Committee on Environment and Public Works.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2017
- Years in office: 4 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; Maryland General Assembly
Chris Van Hollen was born in Pakistan. He was elected to the Senate in 2016 after serving in the House of Representatives. Van Hollen is up for reelection in 2022.
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- Political party affiliation: Democratic
- Assumed Senate seat on: July 16, 2013
- Years in office: 7 years, 5 months
- Current term up in: 2026
- Previous office(s): U.S. House; Massachusetts House of Representatives
Ed Markey won the Massachusetts seat in a special election in 2013. He previously served in the U.S. Military Reserves, and currently serves on the Committee on Foreign Relations. Markey won reelection in 2020 against Joe Kennedy.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2024
- Previous office(s): COP Chair; CFPB Special Advisor
Elizabeth Warren was a Harvard Law School professor before becoming a politician. She is a supporter of raising the minimum wage and increasing bank regulation.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2001
- Years in office: 20 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Michigan House of Representatives; Michigan Senate
Debbie Stabenow serves on the Joint Committee on Taxation and Committee on Agriculture, Nutrition, and Forestry. She is Michigan’s first woman U.S. senator.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House; Michigan Senate
Gary Peters was in the House of Representatives before becoming a senator. He ran his campaign on economic and military issues, and won reelection in 2020.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2007
- Years in office: 14 years, 0 months
- Current term up in: 2024
- Previous office(s): Hennepin County, Minnesota County Attorney
Amy Klobuchar was a former attorney before becoming a senator in 2007. She was short-listed as a potential nominee for the vacant Supreme Court seat during Barack Obama's presidency.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2018
- Years in office: 3 years, 0 months
- Current term up in: 2026
- Previous office(s): Lieutenant Governor of Minnesota
Tina Smith was appointed to replace Al Franken’s Senate seat in 2017 and went on to win her seat in 2018’s regular election. She won reelection in 2020 against four Republican challengers.
- Political party affiliation: Republican
- Assumed Senate seat on: April 9, 2018
- Years in office: 2 years, 9 months
- Current term up in: 2026
- Previous office(s): Mississippi Commissioner of Agriculture and Commerce; Mississippi Senate
Cindy Hyde-Smith was appointed to the Senate in April of 2018, following the resignation of Thad Cochran. She won in the general election later that year by eight percentage points over Democrat Mike Espy, who challenged her again in 2020.
- Political party affiliation: Republican
- Assumed Senate seat on: Dec. 31, 2007
- Years in office: 13 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Mississippi Senate
Roger Wicker was appointed to the Senate in 2007. He won his 2012 reelection by 16 points, and won again in 2018.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2019
- Years in office: 2 years, 0 months
- Current term up in: 2024
- Previous office(s): Attorney General of Missouri
Sen. Josh Hawley has suggested Twitter’s new fact-checking protocol, rolled out in 2020, may be rooted in political motivations against President Trump. His name has been batted around in multiple political circles as a potential 2024 Republican presidential candidate.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; Missouri Secretary of State; Greene County, Missouri Clerk
Roy Blunt is considered to be a moderate Republican senator. He serves on the Committee on Intelligence and Committee on Appropriations. Blunt is up for reelection in 2022.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2007
- Years in office: 14 years, 0 months
- Current term up in: 2024
- Previous office(s): Montana Senate President; Big Sandy, Montana School Board
Jon Tester serves on the Committee on Appropriations and the Committee on Banking, Housing, and Urban Affairs. Tester has what is considered a competitive Senate seat, given the Republican influence within the state.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House
Steve Daines is a Republican senator who serves on the Committee on Indian Affairs and Committee on Agriculture, Nutrition, and Forestry. He won reelection in 2020.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): Assistant Secretary for Planning and Evaluation (HHS)
Ben Sasse was the president of Midland University before becoming a senator in 2014. During the 2016 presidential campaign Sasse said he would not support President Trump. Sasse is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2024
- Previous office(s): Nebraska Legislature
Deb Fischer is a Republican senator who has taken tough stances in support of Second Amendment rights and against immigration reform. In May, she joined forces with a bipartisan group in support of additional funding for pork producers who struggled financially during the coronavirus.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2017
- Years in office: 4 years, 0 months
- Current term up in: 2022
- Previous office(s): Nevada Attorney General
Catherine Cortez Masto was first elected to the Senate in 2016. She has worked against ride-sharing company Uber entering Nevada. She is up for reelection in 2022.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2019
- Years in office: 2 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House
Sen. Jacky Rosen joined forces with Sen. Kamala Harris in May 2020 to urge Senate leadership to make more money available to state unemployment agencies. Eleven senators joined Rosen and Harris in asking for funding to streamline processes and get relief to Americans more quickly. Sen. Rosen is up for reelection in 2024.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2009
- Years in office: 12 years, 0 months
- Current term up in: 2026
- Previous office(s): Governor of New Hampshire; New Hampshire Senate
Jeanne Shaheen was the governor of New Hampshire before becoming a senator. Shaheen serves on the Committee on Appropriations and Committee on Armed Services. She won reelection in 2020.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2017
- Years in office: 4 years, 0 months
- Current term up in: 2022
- Previous office(s): Governor of New Hampshire; New Hampshire Senate
Margaret Wood Hassan won the Senate seat for her state in 2016 by 0.1% over the Republican incumbent. Hassan supports medical marijuana, and is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Oct. 31, 2013
- Years in office: 7 years, 2 months
- Current term up in: 2026
- Previous office(s): Mayor of Newark, New Jersey; Newark Municipal Council
Cory Booker was the mayor of Newark, New Jersey, before becoming a senator. He serves on the Committee on Foreign Relations and the Committee on the Judiciary.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 18, 2006
- Years in office: 14 years, 11 months
- Current term up in: 2024
- Previous office(s): U.S. House; New Jersey General Assembly; New Jersey Senate
Bob Menendez served in the U.S. House of Representatives before becoming a senator. He serves on the Committee on Banking, Housing, and Urban Affairs.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2021
- Years in office: 0 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House; New Mexico Public Regulation Commission
Ben Ray Luján was chosen by House Minority Leader Nancy Pelosi in 2014 to chair the Democratic Congressional Campaign Committee (DCCC), a position he held from 2015 to 2019. He believes in a renewable energy standard and wants the U.S. to end its dependence on foreign oil and invest in clean energy.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Albuquerque City Council
Martin Heinrich served in the U.S. House of Representatives before becoming a senator. He handily won his 2018 reelection bid.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 1999
- Years in office: 22 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; New York State Assembly
Chuck Schumer is now the Senate Majority Leader, and has served in the Senate since 1998. He is considered one of the most influential political leaders on immigration reform. Schumer is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 26, 2009
- Years in office: 11 years, 11 months
- Current term up in: 2024
- Previous office(s): U.S. House; U.S. HUD special counsel
Kirsten Gillibrand was a U.S. representative before becoming a senator. She has been a champion of women’s rights over the course of the #MeToo movement.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2005
- Years in office: 16 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House
Richard Burr won reelection in 2016 in North Carolina, considered a battleground state. Burr opposed the Iran nuclear deal and is up for reelection in 2022.
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- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): Speaker of the North Carolina House of Representatives
Thom Tillis became a senator in 2014 after serving in the U.S. House of Representatives. He serves on the Committee on Aging and the Committee on Armed Services. He won his reelection in 2020.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): Governor of North Dakota
John Hoeven was North Dakota’s governor for 10 years before becoming a senator. He won his seat in 2016, and is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2019
- Years in office: 2 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; North Dakota Public Service Commissioner
Sen. Kevin Cramer won his spot in the Senate by unseating incumbent Heidi Heitkamp in 2018. He has been a mostly straight-line Republican, voting with his party on the vast majority of bills.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; U.S. Trade Representative; Director of the Office of Management and Budget
Sen. Rob Portman served under President George W. Bush. He reversed his position on same-sex marriage to support the historic Supreme Court ruling, but supports defunding Planned Parenthood. He is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2007
- Years in office: 14 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Ohio Secretary of State; Ohio House of Representatives
Sherrod Brown won his 2012 reelection campaign by six points. Brown serves on the Committee on Agriculture, Nutrition, and Forestry and Committee on Veterans' Affairs.
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- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House
James Lankford won the Senate seat for Oklahoma in a 2014 special election, filling the vacancy left by Tom Coburn. Lankford won reelection in 2016, and is up for reelection again in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Nov. 17, 1994
- Years in office: 26 years, 1 month
- Current term up in: 2026
- Previous office(s): U.S. House; Mayor of Tulsa, Oklahoma; Oklahoma Senate; Oklahoma House of Representatives
Jim Inhofe was the mayor of Tulsa before becoming a senator. He is considered a staunch Republican. Inhofe won reelection 2020.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2009
- Years in office: 12 years, 0 months
- Current term up in: 2026
- Previous office(s): Oregon House Speaker
Jeff Merkley has run as an Independent, Working Families Party, and Progressive candidate over the course of his career. The now-Democratic senator is a reliable vote on liberal issues, and won his reelection bid in 2020.
- Political party affiliation: Democratic
- Assumed Senate seat on: Feb. 6, 1996
- Years in office: 24 years, 11 months
- Current term up in: 2022
- Previous office(s): U.S. House
Ron Wyden has served in the Senate for more than two decades, winning his most recent reelection by 23 points. Wyden serves on the Joint Committee on Taxation and Committee on Intelligence. He is up for reelection again in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House
Pat Toomey is a Republican senator serving on the Committee on Banking, Housing, and Urban Affairs, and the Committee on the Budget. Toomey is up for reelection in 2022.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2007
- Years in office: 14 years, 0 months
- Current term up in: 2024
- Previous office(s): Pennsylvania Treasurer; Pennsylvania Auditor
Robert Casey, Jr. was the Pennsylvania State Treasurer before becoming a senator. He won reelection in 2018 with 55% of the vote.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 1997
- Years in office: 24 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House; Rhode Island Senate
Jack Reed was a representative before becoming a senator. He won his 2014 reelection by more than 40 points and won again in 2020 by 67 points.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2007
- Years in office: 14 years, 0 months
- Current term up in: 2024
- Previous office(s): Attorney General of Rhode Island; United States Attorney
Sheldon Whitehouse was the Rhode Island attorney general before becoming a senator. He worked across the aisle with fellow senators to create the Growing Climate Solutions Act of 2020.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2003
- Years in office: 18 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House; South Carolina House of Representatives
Lindsey Graham is a military veteran who served in the U.S. Air Force Reserves before becoming a senator in 2002. He ran for president in 2016 and is known for conservative stances on American foreign policy. Graham was reelected in 2020.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 2, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; South Carolina House of Representatives; Charleston County, South Carolina Council
Tim Scott was appointed to the Senate in 2013 and was reelected in 2016 by nearly 25 points. He defended Attorney General Jeff Sessions against accusations of racism and is up for reelection in 2022.
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- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2005
- Years in office: 16 years, 0 months
- Current term up in: 2022
- Previous office(s): U.S. House; South Dakota Republican Party Executive Director
John Thune won his first Senate election in 2004 and was reelected in 2016. He serves on the Committee on Agriculture, Nutrition, and Forestry, and the Committee on Commerce, Science, and Transportation. Thune is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): Governor of South Dakota; South Dakota Senate
Mike Rounds was first elected to the Senate in 2014. Prior to that, he was the governor of North Dakota. Rounds is a vocal opponent of the Affordable Care Act.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2021
- Years in office: 0 years, 0 months
- Current term up in: 2026
- Previous office(s): United States Ambassador to Japan; Tennessee Commissioner of Economic and Community Development
Bill Hagerty served as an economic advisor to President George H.W. Bush and is the founder and managing director of Hagerty Peterson & Company, LLC. He is a graduate of Vanderbilt University and Vanderbilt Law School.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2019
- Years in office: 2 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Tennessee Senate
Sen. Marsha Blackburn is an outspoken critic of China and has urged her colleagues to not so much as take meetings with representatives of Chinese companies. In May, she joined Sen. McSally in introducing legislation that would allow American citizens to sue the Chinese Communist Party over the spread of COVID-19, a move rooted in xenophobia.
- Political party affiliation: Republican
- Assumed Senate seat on: Dec. 1, 2002
- Years in office: 18 years, 1 month
- Current term up in: 2026
- Previous office(s): San Antonio District Judge; Texas Attorney General; Texas Supreme Court (Associate Justice)
John Cornyn is the Senate Majority Whip, and has served since 2002. He was outspoken against the immigration reforms brought by President Barack Obama. Cornyn was reelected in 2020.
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- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. Assoc. Deputy AG; Texas Solicitor General
Ted Cruz was elected to the Senate in 2012 after beating the Republican incumbent in a primary. Cruz was born in Alberta, Canada, and deeply opposed the Obama administration’s immigration reforms.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): Assistant United States Attorney
Mike Lee won reelection in 2016. He serves on the Joint Economic Committee and the Committee on Commerce, Science, and Transportation. Lee is up for reelection in 2022.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2019
- Years in office: 2 years, 0 months
- Current term up in: 2024
- Previous office(s): Governor of Massachusetts
Sen. Mitt Romney has been a wildcard member of the Republican Party in the last year. He cast the sole Republican vote to impeach President Trump, marched in protest of police brutality following the death of George Floyd, and joined former President George W. Bush in saying he would not support President Trump’s reelection bid.
- Political party affiliation: Independent
- Assumed Senate seat on: Jan. 3, 2007
- Years in office: 14 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Mayor of Burlington, Vermont
Bernie Sanders is seen as a national leader of progressive politics. He began his career in the Senate in 2007, and had two unsuccessful runs for president. He will be up for reelection in the Senate in 2024.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 1975
- Years in office: 46 years, 0 months
- Current term up in: 2022
- Previous office(s): State's Attorney, Chittenden County, Vermont
Patrick Leahy was reelected to the Senate in 2016. His seat is considered safe for Democrats. Leahy serves on the Joint Committee on the Library and the Committee on Agriculture, Nutrition, and Forestry. He is up for reelection in 2022.
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- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2009
- Years in office: 12 years, 0 months
- Current term up in: 2026
- Previous office(s): Governor of Virginia; Virginia Democratic Party Chair
Mark Warner was the governor of Virginia before becoming a senator. Warner serves on the Committee on Intelligence and the Committee on the Budget. He won reelection in 2020.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2024
- Previous office(s): Governor of Virginia; Lt. Governor of Virginia; Chair of the Democratic National Committee; Mayor of Richmond, Virginia
Tim Kaine was the governor of Virginia before becoming a senator. Hillary Clinton picked Kaine for her running mate in the 2016 presidential election.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2001
- Years in office: 20 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Washington House of Representatives
Maria Cantwell was a member of the U.S. House of Representatives before becoming a senator. She serves on the Committee on Commerce, Science, and Transportation and the Committee on Energy and Natural Resources.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 1993
- Years in office: 28 years, 0 months
- Current term up in: 2022
- Previous office(s): Washington Senate; Shoreline School Board
Patty Murray became a senator in 1992. She serves on the Committee on Appropriations and the Committee on the Budget. She is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Nov. 15, 2010
- Years in office: 10 years, 1 month
- Current term up in: 2024
- Previous office(s): Governor of West Virginia; Secretary of State of West Virginia; West Virginia House of Delegates; West Virginia Senate
Joe Manchin is a Democratic senator, known for supporting a general overhaul of the Affordable Care Act.
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- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2015
- Years in office: 6 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House; West Virginia House of Delegates
Shelley Moore Capito was a member of the U.S. House of Representatives before becoming a senator. She serves on the Joint Committee on the Library and the Committee on Appropriations. She won reelection in 2020.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2011
- Years in office: 10 years, 0 months
- Current term up in: 2022
- Previous office(s): none
Ron Johnson was elected in 2010 as a Tea Party Republican. He serves on the Committee on the Budget and the Committee on Foreign Relations. He is up for reelection in 2022.
- Political party affiliation: Democratic
- Assumed Senate seat on: Jan. 3, 2013
- Years in office: 8 years, 0 months
- Current term up in: 2024
- Previous office(s): U.S. House; Wisconsin Assembly; Dane County, Wisconsin Board of Supervisors
Tammy Baldwin was a member of the U.S. House of Representatives before becoming a senator. She has said that she worked with the Biden campaign to help the former vice president win the 2020 presidential election.
- Political party affiliation: Republican
- Assumed Senate seat on: Jan. 3, 2021
- Years in office: 0 years, 0 months
- Current term up in: 2026
- Previous office(s): U.S. House; Wyoming Treasurer; Wyoming Senate; Wyoming House of Representatives
Cynthia Lummis was 24 when she became the youngest woman ever elected to the Wyoming Legislature in 1979. She has spoken openly about her feelings on Obamacare and voted to repeal the Patient Protection and Affordable Care Act.
- Political party affiliation: Republican
- Assumed Senate seat on: June 25, 2007
- Years in office: 13 years, 6 months
- Current term up in: 2024
- Previous office(s): Wyoming Senate
John Barrasso was an orthopedic surgeon before entering politics. The Republican has suggested another coronavirus relief bill may be necessary.
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