There are 33 United States senators up for re-election in 2024. Ten are Republicans, three are Independents, and 20 are Democrats.
The upper chamber, which is now controlled narrowly by Democrats, could flip red if the GOP performs well next November. The map is considered to favor Republicans slightly this election cycle, though electoral predictions will continue to evolve, and surprises on the campaign trail are always possible.
Come decision day 2024, these are the states that will see contests for senator, and who currently represents them.
Which senators are up for reelection in 2024?
Sinema, once a Democrat, is known for her eccentric fashion choices and her centrist views, which have regularly held up the Democratic policy agenda. Sinema, who left the Democratic Party in December 2022, citing concerns over “rigid partisanship,” will be challenged from the left by current Rep. Ruben Gallego, D-Ariz.
Feinstein is a veteran of the Senate whose age has come into play as a prominent political concern. Earlier this year she was absent from the chamber for over two months, recovering from a case of shingles. Her absence brought important committee votes to a standstill and led some to call for her resignation.
She will not seek another term, and the race for her seat is expected to be highly competitive with heavy hitters from the Democratic Party, such as Democratic Reps. Barbara Lee, Adam Schiff and Katie Porter vying for her spot.
Murphy has served as the senator from Connecticut since 2013 and is expected to cruise to re-election in 2024 in predominantly blue Connecticut. During his time in the chamber, he has made gun control a major issue, often referencing the 2012 Sandy Hook school shooting in his home state.
Carper, who originally won his seat in 2000, will not seek another term. In his retirement announcement, Carper endorsed Rep. Lisa Blunt Rochester to be his successor. Blunt Rochester formally announced her candidacy in June.
Scott has been a senator since 2019, and he served as state governor before his time in the upper chamber. Scott is a vocal supporter of former President Donald Trump and was tasked as chair of the National Republican Senatorial Committee with securing a victory for the party in the midterms.
Hirono was the first Asian American woman to be elected a U.S. senator. She first won her seat in 2012 and has spent much of her tenure in the chamber working on legislation addressing immigration, the environment and veterans affairs.
Braun, who won his Senate seat in 2018, is opting to run for governor in his state rather than seek a second term. Braun is not the only Republican seeking the governorship. Among others, he will have to run against Lt. Gov. Suzanne Crouch. The race to replace Braun is expected to become crowded, with plenty of rising GOP stars hoping to toss their hat in the ring.
King has not yet announced his 2024 reelection bid but appears to be gearing up for another run. One of just three independents in the Senate, he has held the seat since 2013.
Cardin, who has been in office since 2007, announced in May he would not seek re-election. Since the announcement, a slew of candidates have indicated they plan to run in the Democratic primary in Maryland, including Prince George’s County Executive Angela Alsobrooks, Maryland State Rep. David Trone and Montgomery County Councilmember Will Jawando.
One-time presidential hopeful and Senate veteran Elizabeth Warren is running to keep her seat in 2024. She has served as senator for ten years and is unlikely to face a strong primary challenger.
Stabenow, who has been in the Senate since 2001, announced plans to retire in early January, opening up a seat in a critical battleground state. In the Democratic primary to replace her, Rep. Elissa Slotkin is widely considered the frontrunner, though former state Rep. Leslie Love and businessman Nasser Beydoun have also declared candidacies. On the Republican side, businessman Michael Hoover and State Board of Education member Nikki Snyder have announced plans to run.
Klobuchar, who rose to national fame during her 2020 bid for the presidency, has been a Minnesota senator since 2007 and is the first woman to be elected by the state to the Senate.
Wicker has been the state’s senator since 2007 and will run again in 2024. He serves as the ranking member on the Senate Armed Services Committee.
Famous in part for holding up a fist in support of rioters outside the capitol on Jan. 6, 2021, Hawley forms part of a growing conservative flank of the GOP. He will run for re-election in 2024 and be challenged on the left by both St. Louis County Prosecutor Wesley Bell and Maine Corps veteran Lucas Kunce.
A Democrat in a deeply red state, Tester has held his Senate seat since 2007. He is expected to face a tough challenge from the right in 2024 as Republicans battle to regain a majority in the U.S. Senate. Among the names being floated as potential challengers are U.S. Rep. Matthew M. Rosendale, who lost to Tester in 2018, and Tim Sheehy, a businessman and veteran.
Fischer has represented Nebraska in the Senate since the 2012 midterms and has already announced her plans to seek reelection. The move makes it less likely for another Republican to throw their hat in the ring, though some speculated Republican Gov. Pete Ricketts was weighing a run.
Rosen, who has already announced her reelection bid for 2024, has held her seat since 2019. Nevada is a fiercely divided state and forms part of a challenging electoral map for Democrats. Though no Republicans have yet announced their candidacy, Rosen is expected to have to defend her seat from a strong challenger.
Menendez has held his Senate seat since 2006 and intends to run again but is facing, along with his wife, a broad federal investigation centered in part on undisclosed gifts the senator received, the Washington Post reported.
Heinrich, who has held his seat since 2013, will run again in 2024. He launched his campaign for a third term with a video touching on gun safety and the importance of a transition to clean energy. Republicans have not yet announced a challenger.
Gillibrand has become a mainstay of New York politics, holding her Senate seat since 2009. This primary season she will face a challenge from Army veteran William Schweitzer, who once worked in Sen. Chuck Schumer’s Rochester district office and served as deputy press secretary during ex-Gov. Andrew Cuomo’s 2018 reelection campaign. Though speculation swirled over whether Gillibrand would face more challenges from up-and-coming New York lawmakers, no other candidates have yet been announced.
Cramer, who won his seat in 2018, has not yet announced plans to seek reelection. Cramer was a close ally of Trump during the former president’s term in office, but has since voiced support for a possible replacement on the 2024 GOP ticket.
Brown is a prominent target for Republicans in 2024. He occupies a swing state seat they see as a possible pick-up in their quest to regain control of the chamber. An ad blitz has already begun in the state as GOP challengers attempt to oust Brown, who first won the election in 2006. Republican state Sen. Matt Dolan has already announced a run along with businessman Bernie Moreno, and GOP Secretary of State Frank LaRose is also rumored to be considering a run.
Casey was first elected in 2006. Though he represents a swing state identified by Republicans as an ideal win in 2024, he is considered a tough candidate to beat. The son of former Gov. Robert Casey, Sr. he is widely popular in the state, especially with swaths of voters other Democrats have begun to struggle with attracting. The GOP is expected to run former business executive David McCormick, though he has not yet announced.
Whitehouse, who has been in the Senate for a little under a decade, is running for a fourth term. He will face a challenge on the right from Raymond McKay, a veteran and former president of the Rhode Island Republican Assembly.
Elected in 2018, Blackburn has become a prominent voice among conservatives, particularly on culture war issues. She is expected to seek reelection but has not yet announced.
On the left, State Rep. Gloria Johnson, who entered the national spotlight when she was nearly expelled from the state legislature for holding a protest on the House floor against gun violence, is considering a run. Two of her colleagues, Democratic Reps. Justin Jones of Nashville and Justin Pearson of Memphis were briefly expelled for the same action. Nashville attorney Joanne Sowell, another Democrat, has already filed her candidacy with the FEC.
Cruz, a political firebrand for his party and a two-time presidential candidate, successfully battled off a challenge from Democratic candidate Beto O’Rourke in 2018. For 2024, he may have to do the same. Democratic Rep. Colin Allred, and state Sen. Roland Gutierrez, are both running for the with hopes of unseating Cruz.
One-time presidential nominee for the GOP, Romney has come to occupy a minority in recent years, treading a more centrist, anti-Trump line. He has held his Senate seat since 2019, serving before that as Governor of Massachusetts.
Sanders, a famously outspoken member of the Senate’s left flank, has been in office since 2007. He is one of the chamber’s few independents but often votes on a party line with Democrats. Sanders, who famously energized a grass-roots movement during his 2016 and 2020 presidential runs, has ruled out a 2024 bid, saying instead he would endorse Biden.
Kaine, who was the vice presidential candidate on Hillary Clinton’s ticket in 2016, has represented Virginia in the Senate since 2013. For Democrats who face a tough electoral map in 2024, his race is a must-win. Though Kaine is a veteran of Virginia politics, and the state tends to lean blue, Republican Gov. Glenn Youngkin’s win in 2021 proved a red tilt is not far off.
Eddie Garcia, a military veteran, has already announced he will seek the GOP nomination in the Senate race.
Cantwell has been in the Senate for over two decades, first winning election in 2000. Cantwell has yet to announce plans to seek re-election but is expected to. No GOP candidates have thrown their hats in the ring so far.
Manchin, a notoriously centrist vote on the Democratic side, has not yet announced a 2024 re-election bid. Rumors have swirled that the West Virginia political titan is weighing a possible third-party run for president. Potential presidential bid aside, Manchin is one of his party’s most vulnerable incumbents.
The GOP primary in West Virginia is already shaping up with Gov. Jim Justice, a former Democrat who swapped parties in 2017, jumping in the race on the establishment side, and Rep. Alex Mooney, who belongs to the hyper-conservative House Freedom Caucus running, to his right.
Baldwin, who announced plans for re-election in April, is a prime target for the GOP this election cycle. Though no Republican has yet formally announced their candidacy, behind the scenes plenty of names are being floated.
“I don’t think anybody’s fairly concerned about the timing yet,” Mark Jefferson, executive director of the Republican Party of Wisconsin, told the Milwaukee Journal Sentinel, part of the USA TODAY network “And we have some strong candidates looking at it.”
Barrasso has represented Wyoming in the Senate since 2007. In one of the reddest states in the country, he has not yet formally announced his candidacy but is unlikely to face a strong Democratic challenger.
This article originally appeared on USA TODAY: What senators are up for re-election in 2024? State races to watch