2024 United States Senate elections

All 33 Class 1 Senate seats are up for election in 2024; Class 1 currently consists of 21 Democrats, 2 independents who caucus with the Senate Democrats, and 10 Republicans. If vacancies occur in Class 2 or Class 3 Senate seats, that state might require a special election to take place during the 118th Congress, possibly concurrently with the other 2024 Senate elections.

Each block represents one of the one hundred seats in the U.S. Senate. "D#" is a Democratic/active senator, "I#" is an Independent senator, and "R#" is a Republican/active senator. They are arranged so that the parties are separated, and a majority is clear by crossing the middle.

One-term Democrat Kyrsten Sinema was elected in 2018 with 50.0% of the vote. Due to her opposition to some of President Joe Biden's agenda, she is vulnerable to a primary challenge. Potential primary challengers include U.S. representative Ruben Gallego, Mayor Kate Gallego of Phoenix, state senator Martin Quezada, as well as Maricopa County Democratic Party official Jade Duran, while potential Republican candidates include outgoing Governor Doug Ducey and Congressman Andy Biggs. Should he run, Ducey would have an advantage in the GOP primary due to his widespread name recognition, however, he would almost certainly face a contested primary due to former President Donald Trump's criticism of him for refusing to overturn the results of the 2020 presidential election.[8][9][10]

Five-term Democrat Dianne Feinstein was re-elected in 2018 with 54.2% of the vote. Despite being 91 in 2024, Feinstein has filed paperwork to run. Feinstein's staff later clarified that this was due to election law technicalities; it was not indicative of her intentions in 2024.[11]

Should Feinstein retire, U.S. Representatives Ro Khanna, Barbara Lee, Katie Porter, and Adam Schiff have been speculated upon as possible candidates.[12][13][14][15]

Two-term Democrat Chris Murphy was re-elected in 2018 with 59.5% of the vote.

Four-term Democrat Tom Carper was re-elected in 2018 with 60.0% of the vote. During the Democratic primary of that race, Carper implied that he might retire in 2024, and, when asked about it, said, "This may be the last time."[16] If Carper does retire, U.S. representative Lisa Blunt Rochester is seen as a potential candidate.[17]

Former Governor and incumbent one-term Republican Rick Scott was elected in 2018 with 50.1% of the vote. He is running for reelection to a second term.[1]

U.S. representative Stephanie Murphy has expressed interest in challenging Scott.[18] Another potential candidate is 2016 Democratic nominee for U.S. Senate Patrick Murphy[19]

Political journalists speculate Senator Scott may be a candidate for the Republican presidential nomination in 2024.[20]

Two-term Democrat Mazie Hirono was re-elected in 2018 with 71.2% of the vote.

One-term Republican Mike Braun was elected in 2018 with 50.8% of the vote.

Secretary of Transportation Pete Buttigieg, who was a candidate for the Democratic presidential nomination in 2020, was considered a potential challenger until he relocated to Michigan in 2022.[21]

Two-term Independent incumbent Angus King was re-elected in 2018 with 54.3% of the vote. He has hinted that he may retire.[22] Former Maine House speaker and 2020 Democratic nominee for Senate Sara Gideon is considered a potential contender.[23]

Three-term Democrat Ben Cardin was re-elected in 2018 with 64.9% of the vote.

Two-term Democrat Elizabeth Warren was re-elected in 2018 with 60.3% of the vote. On May 8, 2021, Warren confirmed that she plans to run for a third term.[2]

Outgoing Governor of Massachusetts Charlie Baker may run in the Republican primary.[24]

Four-term Democrat Debbie Stabenow was re-elected in 2018 with 52.3% of the vote.

Three-term Democrat Amy Klobuchar was re-elected in 2018 with 60.3% of the vote.

Two-term Republican Roger Wicker was re-elected in 2018 with 58.5% of the vote.

One-term Republican Josh Hawley was elected in 2018 with 51.4% of the vote.

Three-term Democrat Jon Tester was re-elected in 2018 with 50.3% of the vote.

Two-term Republican Deb Fischer was re-elected in 2018 with 57.7% of the vote. On May 14, 2021, Fischer announced she intends to seek re-election, despite previously declaring an intention to retire.[3]

Democrat Alisha Shelton, a mental health practitioner from Omaha, plans to challenge Fischer.[4]

One-term Democrat Jacky Rosen was elected in 2018 with 50.4% of the vote.

Three-term Democrat Bob Menendez was re-elected in 2018 with 54.0% of the vote. On July 13, 2021, The New Jersey Globe stated that Menendez plans to run for a fourth term.[5]

Two-term Democrat Martin Heinrich was re-elected in 2018 with 54.1% of the vote.

Two-term Democrat Kirsten Gillibrand was re-elected in 2018 with 67.0% of the vote.

One-term Republican Kevin Cramer was elected in 2018 with 55.1% of the vote.

Kristin Hedger, a businesswoman and nominee for North Dakota Secretary of State in 2006 has filed paperwork to run for this seat.[25]

Three-term Democrat Sherrod Brown was re-elected in 2018 with 53.4% of the vote. Brown plans to run for a fourth term.[6]

Three-term Democrat Bob Casey, Jr., was re-elected in 2018 with 55.7% of the vote.

Three-term Democrat Sheldon Whitehouse was re-elected in 2018 with 61.4% of the vote.

One-term Republican Marsha Blackburn was elected in 2018 with 54.7% of the vote.

Two-term Republican Ted Cruz was re-elected in 2018 with 50.9% of the vote. Cruz has expressed interest in running for President in 2024[26] Senator Cruz has also long advocated for Congressional term limits.[27]

Former U.S. representative Will Hurd has expressed an interest in primary challenging Cruz.[28]

Democratic U.S Representative Joaquin Castro, and his twin brother former San Antonio Mayor, former United States Secretary of Housing and Urban Development, and 2020 presidential candidate Julián Castro are considered potential front runners.[29] Former U.S. representative, 2020 presidential candidate, and Cruz's 2018 opponent Beto O'Rourke may be another potential Democratic candidate.[30] O'Rourke is currently running for the governorship. Astronaut Scott Kelly, the identical twin brother of the junior Democratic senator for Arizona Mark Kelly, has also expressed interest in running.[31]

One-term Republican Mitt Romney was elected in 2018 with 62.6% of the vote. Romney has expressed uncertainty over his political future. [32] Utah attorney general Sean Reyes has expressed interest in challenging Romney in the Republican primary.[33] Former US Representative Jason Chaffetz is also seen as a potential primary challenger.[34]

Three-term Independent Bernie Sanders was re-elected in 2018 with 67.4% of the vote.

Potential Democratic candidates include Vermont attorney general T. J. Donovan[35] and former Vermont lieutenant governor David Zuckerman,[36] a Progressive.[37]

Two-term Democrat Tim Kaine was re-elected in 2018 with 57.0% of the vote.

Four-term Democrat Maria Cantwell was re-elected in 2018 with 58.3% of the vote.

Two-term Democrat Joe Manchin was re-elected in 2018 with 49.6% of the vote. Manchin plans to run for a third full term.[7]

Republican representative Alex Mooney has expressed interest in challenging Manchin.[38]

Manchin has received the endorsements of U.S. Senators Susan Collins (R-ME) and Lisa Murkowski (R-AK).[6]

Two-term Democrat Tammy Baldwin was re-elected in 2018 with 55.4% of the vote.

Two-term Republican John Barrasso was re-elected in 2018 with 67.0% of the vote.