Key Senate Races Could Determine Control as Democrats Seek Four-Seat Gain

Democrats require at least four additional seats to take control of the United States Senate, where Republicans currently hold a 53-47 majority. Voter dissatisfaction with President Donald Trump, the ongoing war in Iran and rising living costs have turned several races in traditionally Republican states into competitive contests.

In Alaska, Republican incumbent Dan Sullivan faces Democratic former Representative Mary Peltola in a ranked-choice ballot that also includes an independent candidate sharing Sullivan’s name. Trump called the independent candidacy "election fraud," a claim Peltola dismissed as a diversion from affordability concerns. Campaign finance reports show Peltola has raised $33 million, while Sullivan has raised nearly $14 million; Republican spending on the race totals $42 million compared with $38 million by Democrats.

Iowa’s open seat pits Republican Representative Ashley Hinson against Democratic state Representative Josh Turek after Senator Joni Ernst announced she will not run. Hinson, who has called for an immediate end to the Iran war, leads in recent polls despite Turek out-raising her $20 million to $14 million.

Kansas, a state that has not elected a Democratic senator since 1932, features Republican Senator Roger Marshall against Democrat Adam Hamilton, a Methodist megachurch pastor. Both Trump and Vice President JD Vance have campaigned for Marshall, yet recent polling shows Hamilton narrowly ahead. Hamilton has raised $14 million, more than double Marshall’s $6 million.

In Maine, Republican Senator Susan Collins confronts Democrat Troy Jackson after the original Democratic nominee withdrew amid allegations. Collins, who voted to convict Trump in his second impeachment, has been out-raised by Jackson, who has collected about $26.9 million to Collins’s $25.2 million.

North Carolina’s open seat sees Democrat Roy Cooper competing with Republican Michael Whatley, recruited by Trump. Cooper has raised $50 million and leads polls by double digits, while Whatley has $14 million raised and less than $1 million cash on hand.

Ohio’s special election features Democrat Sherrod Brown against Republican Jon Husted, appointed after JD Vance became vice president. Brown has raised $68 million, more than three times Husted’s $20 million, and leads polls by three to five points.

In Texas, Democrat James Talarico challenges Republican Attorney General Ken Paxton. Talarico has out-raised Paxton by $110 million and holds a narrow or tied lead in recent polling, despite heavy Republican spending of $300 million.

Georgia’s race pits incumbent Democrat Jon Ossoff against Republican Mike Collins. Ossoff has a substantial fundraising advantage, with $15.1 million on hand compared with Collins’s $1.1 million, and leads in polls.

Michigan’s open seat matches Democrat Abdul El-Sayed with Republican Mike Rogers. El-Sayed has raised $45 million, more than double Rogers’s $21 million, and recent polls show him ahead.

New Hampshire’s open seat features Democrat Chris Pappas against former Republican Senator John Sununu. Pappas has raised $24 million to Sununu’s $6 million and leads polls by five to eight points.

Across these contests, outside groups have poured billions into advertising, with Republican spending often exceeding Democratic outlays. The outcomes will determine whether the Senate remains under Republican control or shifts to a Democratic majority.