Outlook on the 2026 Senate Elections: Shifts as We Spring into Summer
The Current Political Landscape
The battle for control of the Senate is constantly shifting as we move from spring into summer and inch closer to the 2026 midterm elections. The Senate map has generally been viewed as tough for Democrats since the start of this cycle. However, recent polling suggests Democrats now have a more viable – albeit still challenging – pathway to reclaiming the majority. With Republicans currently holding a 53–47 advantage, Democrats are seeking a net gain of four seats to flip control of the upper chamber.
The broader political environment is likely to weigh heavy on voters as they cast ballots for statewide races. Factors such as President Donald Trump’s approval ratings, the state of the economy, and the ongoing conflict in Iran are all likely to influence voter sentiment. Taken together, these dynamics could create a more favorable environment for Democrats in their effort to pick up seats in the Senate.
Public opinion polling underscores challenges for the president and the Republican party. For example, a recent Washington Post–ABC News–Ipsos poll places President Trump’s disapproval rating at 62 percent. His weakest marks come on the cost of living, an issue that remains top of mind for voters. Similarly, a Pew Research Center survey finds that about six in ten Americans – or roughly 62 percent of the country – disapprove of President Trump’s military action in Iran.
Ultimately, control of the Senate will still come down to a handful of competitive races, where small shifts in turnout, fundraising, and mood could prove decisive. Already, we are seeing the impacts of these dynamics result in notable shifts in ratings for key races that will determine whether Republicans or Democrats hold Senate gavels next year.
Senate Races with Notable Changes
Georgia: Three Republicans are competing in the primary for the chance to challenge incumbent Sen. Jon Ossoff (D-GA) in the general election. Derek Dooley, a candidate with close ties to Gov. Brian Kemp, is facing Reps. Mike Collins (R-GA) and Buddy Carter (R-GA), both of whom gave up reelection campaigns for their House seats to run for Senate. Collins currently holds a lead in polling heading into the May 19 primary. On the broader race outlook, both the Cook Political Report and Sabato’s Crystal Ball have recently shifted their ratings for the seat from toss-up to leans Democrat, reflecting a modest but notable change in the race’s baseline competitiveness heading into the general election.
Inside Elections: Toss-up| Cook Political Report: Leans Democrat | Sabato’s Crystal Ball: Leans Democrat
Maine: On April 30, former Maine Gov. Janet Mills, suspended her Democratic primary campaign and bowed out of the race to challenge longtime incumbent Sen. Susan Collins (R-ME). Mills’ exit clears the path to the Democratic nomination for Graham Platner, a political newcomer running as a progressive. Platner has built a sizable grassroots fundraising operation, signaling early enthusiasm. Maine remains one of the Democrats’ top targets for a pickup as they look to reclaim the Senate, especially because Collins is the only Republican Senator in cycle representing a state won by 2024 Democratic presidential nominee Kamala Harris. Even before Mills dropped out of the race, Platner was leading Collins in general election polling by 5-7 points. While we are awaiting reliable polling that reflects the consolidation of the Democratic vote, most pundits agree that the volatility injected by a less-tested Democratic candidate probably makes this race a dead heat. Collins’ path to reelection depends heavily on winning over cross-party voters, a bloc that has become increasingly rare in today’s polarized environment, leaving the race competitive, but far from a certain pickup for Democrats.
Inside Elections: Tilt Republican | Cook Political Report: Toss-up| Sabato’s Crystal Ball: Toss-up
North Carolina: Sen. Thom Tillis (R-NC) announced he would not seek re-election following his vote to block President Trump’s One Big Beautiful Bill Act (OBBBA), creating an open seat. After the March 3 primary, former Gov. Roy Cooper secured the Democratic nomination, while Michael Whatley, former chair of the Republican National Committee (RNC), emerged as the Republican nominee. Cooper raised $13.8 million compared to Whatley’s $5 million in the first quarter of this year. However, in early April, a GOP Super PAC committed $71 million to Whatley. This seat remains up for grabs, and the race is in constant flux, though it is worth noting that the Cook Political Report recently shifted this contest from toss-up to leans Democrat.
Inside Elections: Toss-up| Cook Political Report: Leans Democrat| Sabato’s Crystal Ball: Toss-up
Ohio: As expected, Sen. Jon Husted (R-OH) and former Sen. Sherrod Brown (R-OH) emerged from Ohio’s May 5 primary contests as their parties’ respective nominees. The Ohio Senate race is a special election, with Husted, appointed by Gov. Mike DeWine, temporarily filling the seat vacated by Vice President J.D. Vance. Husted will face voters for the first time in a Senate election this November. In a notable shift, the Cook Political Report recently moved the Ohio Senate race from leans Republican to toss-up, signaling growing competitiveness and placing the seat firmly on Democrats’ radar as they expand their target map for 2026.
Inside Elections: Tilt Republican | Cook Political Report: Toss-up| Sabato’s Crystal Ball: Leans Republican
Texas: The March Senate primaries reshaped the landscape for November’s general election in Texas. State Rep. James Talarico secured the Democratic nomination after defeating Rep. Jasmine Crockett (R-TX) in a competitive primary. He has since continued to build momentum. Talarico reported raising a record-breaking $27 million in the first quarter of his 2026 campaign – the largest total ever raised by a Senate candidate in any state during the first quarter of an election year. On the Republican side, the primary has advanced to a runoff between incumbent Sen. John Cornyn (R-TX) and Attorney General Ken Paxton, with Texas voters returning to the polls on May 26. Despite expectations that the President Trump would endorse Cornyn, the president has so far remained neutral. At this point, it may be too late for an endorsement to have any real impact. Recent polling shows a tight race, with most surveys giving Paxton an edge so narrow that the results remain within the margin of error. Meanwhile, many Texas Republicans remain undecided. While Republicans remain favored to hold the seat come November, recent general election polling consistently shows Talarico leading both GOP runoff candidates, with a somewhat larger advantage against Paxton. Talarico’s growing national name recognition and campaign momentum make this a race to watch.
Inside Elections: Likely Republican | Cook Political Report: Likely Republican | Sabato’s Crystal Ball: Likely Republican
Other Toss-Up Races and Contests to Watch
Michigan: Sen. Gary Peters’ (D-MI) retirement has created an open Senate seat in a state that President Trump narrowly won in 2024. While Rep. Haley Stevens (D-MI) had previously been seen as the frontrunner to succeed him, the Democratic primary, scheduled August 4, is now seen as a dead heat between Stevens, state Sen. Mallory McMorrow, and Dr. Abdul El-Sayed, a former public health official. On the Republican side, polling currently shows former Rep. Mike Rogers (R-MI) in the lead. Rogers lost to Sen. Elissa Slotkin (D-MI) in 2024 by fewer than 20,000 votes, underscoring how tight statewide races in Michigan have become. Overall, the seat remains firmly in toss-up territory, with the Democrats playing defense as Republicans home in on this contest as a pick-up opportunity for the 120th Congress.
Inside Elections: Toss-up| Cook Political Report: Toss-up | Sabato’s Crystal Ball: Toss-up
Alaska: To flip the Senate, Democrats realize they must look beyond just pure toss-up races. Despite President Trump carrying Alaska by 13 points in 2024, Democrats believe a flip in Alaska might be attainable. Former Rep. Mary Peltola (D-AK) has emerged as the leading challenger to incumbent Sen. Dan Sullivan (R-AK) ahead of the August 18 primary. Peltola raised $8.9 million in the first quarter, marking the largest first quarter fundraising total ever recorded by a Senate candidate in the state. That figure is roughly four times what Sullivan raised over the same period. Her campaign has focused on a locally driven message centered on “Fish, Family, Freedom.” Sullivan, meanwhile, is emphasizing his record in office, highlighting efforts to strengthen Alaska’s military and Coast Guard presence, expand the state’s resource economy, and secure increased investment in Alaska’s healthcare system. Peltola has built a slow but steady Democratic edge in general election polling, but not a strong enough advantage to make this a comfortable pickup for Democrats. All leading race raters still favor this seat for Republicans.
Inside Elections: Leans Republican| Cook Political Report: Leans Republican | Sabato’s Crystal Ball: Leans Republican
Iowa: Sen. Joni Ernst (R-IA) will not seek re-election, leaving her Senate seat open. Iowa – which as recently as 2014 was considered a swing state – has trended Republican over the past three presidential election cycles. On the Democratic side, the primary is a faceoff between state Sen. Zach Wahls and state Rep. Josh Turek. The June 2 primary is shaping up as a moderate-versus-progressive race, with Wahls – a more progressive candidate backed by Sen. Elizabeth Warren (D-MA) – incorporating criticism of Senate Minority Leader Chuck Schumer (D-NY) into his messaging. Turek – a more moderate candidate who flipped a Republican-held Iowa Senate seat in 2022 – is viewed as the preferred option among Schumer-aligned politicians. The winner of the Democratic primary will face Rep. Ashley Hinson (R-IA), who is the favored Republican nominee heading into the general election.
Inside Elections: Likely Republican| Cook Political Report: Likely Republican| Sabato’s Crystal Ball: Likely Republican
New Hampshire: With Sen. Jeanne Shaheen (D-NH) retiring, New Hampshire becomes another state Democrats must defend while Republicans look to flip the open seat. Since 2017, New Hampshire has consistently elected an all-Democratic Congressional delegation, even as Republicans currently hold both the governorship and control of the state legislature. On both sides of the aisle, the race features well-known political figures. For Democrats, Rep. Chris Pappas (D-NH) has emerged as the frontrunner. The Republican field is more competitive, with former Gov. Chris Sununu aiming to reclaim a Senate seat he originally lost in 2008. He is set to face former Sen. Scott Brown (R-MA) in a primary scheduled for September 8.
Inside Elections: Tilt Democrat| Cook Political Report: Leans Democrat | Sabato’s Crystal Ball: Leans Democrat
Conclusion
The 2026 Senate map continues to be highly competitive, with a handful of open seats and closely divided races set to determine control of the chamber. While Republicans enter the cycle with a numerical advantage, Democrats’ recent momentum in states like Georgia, North Carolina, and Ohio presents a real opportunity to expand the playing field and keep many races nailbiters as we approach Election Day.
Leading pundits agree that control of the Senate in the 120th Congress will come down to just a handful of battleground states, where candidates, fundraising strength, and the broader national political environment could be decisive factors. As primaries play out and general election matchups take shape, the map is likely to continue shifting, leaving both parties with clear opportunities, but also significant vulnerabilities, heading into November.
Key Senate Primary Dates
GA Senate Republican Primary - May 19
TX Senate Republican Primary - May 26
IA Senate Democratic Primary - June 2
MI Senate Democratic Primary - August 4
NH Senate Republican Primary - September 9