US Midterms: 7 States That Could Decide Who Controls Congress

The 2026 United States midterm elections could reshape the balance of political power in Washington, with voters deciding the fate of all 435 seats in the House of Representatives, about one-third of the Senate and several state and local offices.

Although the elections feature hundreds of contests across the country, the battle for control of Congress is expected to hinge on a handful of closely contested races, particularly in seven states where Democrats have an opportunity to flip Republican-held Senate seats.

The contests are unfolding against growing public concern over the economy, rising prices, affordability, corruption and the impact of President Donald Trump’s policies.

Here are seven states whose Senate races could prove decisive in determining which party controls Congress.

1. Alaska

Alaska is among the seven states where the Senate contest has been classified as a toss-up, giving Democrats an opportunity to make gains in a state that has traditionally favoured Republicans.

The race is significant because a Democratic victory would contribute to the party’s efforts to secure a majority in the Senate. With the national contest expected to be closely fought, even a single seat could have considerable implications for the balance of power in Washington.

2. Iowa

Iowa is another traditionally Republican state where Democrats are hoping to pull off an upset in the Senate race.

The contest is taking place amid concerns about rising fuel, fertiliser and equipment costs, which have placed pressure on farmers and other residents. The report links some of these economic pressures to President Trump’s tariffs and the war in Iran, issues that could influence voters’ decisions.

Beyond the Senate contest, the state’s gubernatorial race is also attracting attention, with Democratic candidate and state auditor Rob Sand polling favourably. A Democratic breakthrough in Iowa would represent a significant setback for Republicans.

3. Kansas

Kansas is another Republican-leaning state where Democrats are hoping to make an unexpected Senate gain.

A Democratic victory would be a major upset and could signal growing dissatisfaction with the Republican administration, particularly over the cost of living and economic pressures.

Like Iowa, Kansas is among the heartland states where rising fuel, fertiliser and equipment prices could become important factors in voters’ decisions. A loss in either state would raise questions about the strength of Republican support beyond traditionally competitive political battlegrounds.

4. Maine

Maine is one of the seven states identified as having a toss-up Senate race, making it an important part of the Democrats’ strategy to gain control of the upper chamber.

The contest is significant because Democrats need to make gains in closely divided states to improve their chances of securing a Senate majority. Its outcome will therefore be watched alongside the other competitive races as voters deliver their verdict on the current administration.

5. Michigan

Michigan is another key battleground in the Senate contest, with Democrats hoping to secure a seat that could help shift control of the chamber.

The state is also attracting attention because of divisions within the Democratic Party over its political strategy. Some Democrats are presenting themselves as centrists, while others are embracing more progressive positions.

The report also highlights controversy surrounding a congressional race in the state, where Democrats expressed shock after their representative endorsed Trump-backed Republican rival Mike Rogers instead of Abdul El-Sayed. The development reflects the political tensions surrounding the election and could influence how voters assess party loyalty and representation.

6. Ohio

Ohio is among the seven states where the Senate race remains a toss-up, placing it firmly within the contest for control of Congress.

A Democratic victory would be an important gain for the party, particularly as it seeks to overcome Republican strength in traditionally conservative states. The outcome will also contribute to the broader assessment of whether voters are responding negatively to the economic and political direction of the Trump administration.

With affordability and the economy ranking among voters’ major concerns, Ohio’s result could offer another indication of how those issues are shaping the national political mood.

7. Texas

Texas is arguably one of the most closely watched Senate battlegrounds in the election, with Democrats hoping to win the state’s first Democratic Senate seat since 1993.

The contest has attracted enormous financial and political attention, with more than $1 billion reportedly spent on advertisements during the election cycle. The race is particularly significant because Republican candidate Ken Paxton has the backing of President Trump.

A Democratic victory would be a major political upset and send a strong message to the White House and the Republican Party about the level of public support for the president’s second-term agenda.

For Republicans, holding Texas would be crucial to defending their Senate position, while a Democratic win could significantly alter the party’s prospects of controlling the chamber.

The Bigger Picture

Beyond the seven Senate contests, several closely fought House races could also determine which party controls Congress. Nearly 20 House seats are considered competitive, including New York’s 17th Congressional District and Pennsylvania’s 1st District, where Republican incumbents Mike Lawler and Brian Fitzpatrick are seeking to retain their seats in districts that have shown resistance to Trump.

The final FT-Focaldata poll cited in the report found that nearly 70 per cent of voters disapproved of Trump’s handling of rising prices and the cost of living, with the figure climbing to 77 per cent among independent voters. Most respondents also identified lower prices and a stronger economy as their biggest expectations after the midterms.