The Battle for the Senate Could Come Down to Three States

The 2026 midterm elections are now six months away, with key races intensifying nationwide. While the GOP aims to defend its slim majorities in Congress, the Democrats are desperately trying to flip seats and shift the balance of power. Gaining control of the Senate was once thought unimaginable for them, but lately, they seem more confident that they can pull it off. However, to do so, they'll have to hold down seats in three key states, two of which President Donald Trump won in 2024. And in each one, the possibility of a Republican upset is growing.

A Southern Showdown for Key Senate Seat

Most estimates rank the Georgia Senate race as “lean Democrat,” but it’s starting to look more like a toss-up. Incumbent Jon Ossoff holds a single-digit lead in most general election polls, though recent data have been sparse, adding uncertainty to the race.

On the Republican side, Rep. Mike Collins leads by double digits in most GOP primary polls, followed by Rep. Buddy Carter and former football coach Derek Dooley, a political newcomer backed by Gov. Brian Kemp. Between the governor's support and Dooley's outsider status, the coach could emerge as a potential disruptor, possibly throwing the race into a runoff. With more than half of voters still undecided in recent surveys, predictions are difficult.

Georgia is a must-win for Democrats if they hope to reclaim a Senate majority, but the road for the incumbent is getting rocky. It was recently revealed that Ossoff is endorsed by an arm of the Southern Poverty Law Center (SPLC), which the Department of Justice has brought criminal charges against for allegedly defrauding its donors. The SPLC Action Fund contributed more than $700,000 to Ossoff’s campaign in 2020, according to FEC filings. This could provide Republicans with a line of attack in the months ahead, further tightening an already competitive race.

Great Lakes, High Stakes

Michigan, another state Trump won in 2024, is a Democratic-held open seat with several Democrats vying for the nomination: Rep. Haley Stevens, state Sen. Mallory McMorrow, and Abdul El-Sayed. Stevens is widely seen as the party’s strongest general election candidate, while El-Sayed’s alignment with more progressive politics has raised concerns among some Democrats about his electability. His friendly appearances with far-left streamer Hasan Piker have added fuel to the growing criticism.

For the GOP, Michigan is emerging as a bulwark against a potential Democratic takeover. Former Rep. Mike Rogers is the likely Republican nominee and has already drawn significant outside support, with one group planning to pour $45 million into the state to boost his campaign. If Rogers wins, McMorrow told CNN, “then there is no path at all for Democrats to take control of the US Senate.” They have little room for error and must contend with an electorate that views them as weak and out of touch. “If you look at polling,” said McMorrow, “the only thing less popular than Donald Trump is the Democratic Party.”

Surveys for the general election have been limited in recent months, but earlier polls showed Rogers trailing by single digits. However, a wild card has emerged that could shake up the entire race. Nearly a dozen AI data centers are slated to be built across the state, with one already under construction. Many locals are irate over it and are supporting candidates who oppose the power-hungry facilities, often voting against their preferred party. This could be a defining issue.

Granite State Grind

Less attention has been paid to New Hampshire, but the race could be just as consequential. With Sen. Jeanne Shaheen retiring, Democrats must now defend an open seat in a state friendly to both parties.

Former Sen. John E. Sununu is the likely Republican nominee and leads former Massachusetts Sen. Scott Brown by as much as 37% in primary polls. Sununu is backed by Trump, but his name could also give him a boost at the ballot box. His brother Chris was the governor of New Hampshire for two terms, leaving office in 2025. And their father, John H. Sununu, was the 75th governor of the state and served as chief of staff for George H.W. Bush for nearly two years. Also in Sununu’s favor is that Republican Gov. Kelly Ayotte is running for re-election, which could create an up-ballot effect and give the former senator a lift.

Democrats, on the other hand, are coalescing around Rep. Chris Pappas, who holds a dominant lead in the primary and a narrow edge in early general election polling. A Pappas-Sununu matchup is the most likely scenario, though the primary is still months away.

If there is a unifying thread in Georgia, Michigan, and New Hampshire, it is that the Senate battle will likely be decided by narrow margins. Democrats must win these three states and nearly every competitive GOP-held seat for a chance to take over the Senate. Overall, Republicans still have the upper hand and hold a 53-47 majority, but as the map widens, the room for errors may shrink.